# VibMonitor Easy

## Description

Standalone single\-channel IEPE vibration limiter on a socketed Teensy 4\.1 carrier\. Independent fail\-open isolated shutdown output, peak/RMS and sensor\-fault monitoring, Ethernet configuration and trip download; planning stage with EE review before layout and ordering\.

## Project Details

- **Owner:** xjac0bmichaelx
- **Created:** 10/10/2026
- **Last Updated:** 10/13/2026
- **Visibility:** Public

## Key Components

### BT1 — [BA2032SM](https://flux.ai/adrian95/ba2032sm~svb.md)

- Manufacturer Name: MPD \(Memory Protection Devices\)
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: RTC Backup
- Manufacturer Part Number: BA2032SM
- Role Details: Populate non\-rechargeable3VCR2032, positive to moduleVBAT negative localGND perPJRC, no charging connection\. Keep accessible outside module footprint; no recording hold\-up\.
- Functional Group: MCU U31 Teensy Carrier
- Datasheet URL: https://cdn\-shop\.adafruit\.com/datasheets/BA2032SM\-datasheet\.pdf
- Part Type: Battery Holder

**Pins:**
- NEGATIVE [pin 2]
- POSITIVE [pin 1]

### D1 — [SMAJ24CA\-Q](https://flux.ai/lcsc/smaj24ca-q~7nx.md)

- Role Details: User\-accepted SMAJ24CA\-Q prototype across floating contact; totaloutput leakage \<=10uA atroom by bench\. No alternate TVS search/high\-temperature leakage guarantee; surge scope and assembled isolation remain unqualified\.
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C1973119
- Package or Case Code: SMA\_L4\.3\-W2\.7\-LS5\.1\-BI
- Manufacturer Name: BOURNS
- Part Type: TVS
- Role: Protection
- Functional Group: IO U1 Shutdown Contact
- Manufacturer Part Number: SMAJ24CA\-Q
- Datasheet URL: https://www\.bourns\.com/docs/product\-datasheets/smaj\-q\.pdf

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### D2 — [SS14](https://flux.ai/jecstronic/ss14~ri4.md)

- Role: Rectification
- Manufacturer Name: Slkor\(SLKORMICRO Elec\.\)
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1912111437\_Slkor\-SLKORMICRO\-Elec\-\-SS14\_C444721\.pdf
- Part Type: Diode
- Functional Group: IO U1 Shutdown Contact
- Role Details: Only AC transitions transfer relay LED energy;1A rectifier selected over BAT54 pulse\-current risk\.
- Manufacturer Part Number: SS14
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- Anode [pin A]
- Cathode [pin C]

### D3 — [SS14](https://flux.ai/jecstronic/ss14~ri4.md)

- Role Details: Only AC transitions transfer relay LED energy;1A rectifier selected over BAT54 pulse\-current risk\.
- Manufacturer Name: Slkor\(SLKORMICRO Elec\.\)
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1912111437\_Slkor\-SLKORMICRO\-Elec\-\-SS14\_C444721\.pdf
- Part Type: Diode
- Functional Group: IO U1 Shutdown Contact
- Role: Rectification
- Manufacturer Part Number: SS14
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- Anode [pin A]
- Cathode [pin C]

### D4 — [SS310BF](https://flux.ai/lcsc/ss310bf~9flu.md)

- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/Schottky\-Barrier\-Diodes\-SBD\_SS310BF\_C122868\.html
- Functional Group: PROTECT F1 DC Entry
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Shikues\-SS310BF\_C122868\.pdf
- Package or Case Code: SMBF\_L4\.3\-W3\.6\-LS5\.3\-RD
- Manufacturer Name: SHIKUES\(时科\)
- Manufacturer Part Number: SS310BF
- Role: Protection
- Part Type: Schottky Barrier Diodes \(SBD\)
- LCSC Part Number: C122868
- Role Details: 3A100V seriesSchottky;pin1cathode protected VIN,pin2anode fusedinput\. Budget0\.983A;0\.85V forward allowance up to3A gives\~0\.84W worst;thermal copper and40C test required\.

**Pins:**
- A [pin 2]
- K [pin 1]

### D5 — [SMBJ26A\-Q](https://flux.ai/lcsc/smbj26a-q~pnlg.md)

- Functional Group: PROTECT F1 DC Entry
- JLCPCB Part Class: Extended Part
- Role Details: 26V standoff;42\.1V@14\.3A10/1000us/54\.7V@71\.5A8/20us at25C below65V buck and100Vinputcaps\. Prototype defined bench surge envelope\<=1A10/1000us atroom;not sustainedwrongadapter or universalESD guarantee\. Cathode toVIN\_PROTECTED\.
- Role: Protection
- LCSC Part Number: C1517991
- Package or Case Code: SMB\_L4\.6\-W3\.7\-LS5\.4\-RD
- Manufacturer Name: BOURNS
- Datasheet URL: https://www\.bourns\.com/docs/product\-datasheets/smbj\-q\.pdf
- Part Type: TVS
- Manufacturer Part Number: SMBJ26A\-Q

**Pins:**
- A [pin 2]
- C [pin 1]

### D6 — [SS16T3G](https://flux.ai/lcsc/ss16t3g~01ra.md)

- Product Info Url: https://lcsc\.com/product\-detail/Schottky\-Barrier\-Diodes\-SBD\_ON\_SS16T3G\_SS16T3G\_C113257\.html
- LCSC Part Number: C113257
- Manufacturer Name: onsemi\(安森美\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010301\_onsemi\-SS16T3G\_C113257\.pdf
- Functional Group: POWER U12 IEPE Boost
- Package or Case Code: SMA\_L4\.4\-W2\.8\-LS5\.4\-RD
- JLCPCB Part Class: Extended Part
- Role Details: BoostSW anode to28V cathode;1A@TC105C,40Asingle60Hz surge\.
- Part Type: Schottky Barrier Diodes \(SBD\)
- Manufacturer Part Number: SS16T3G
- Role: Rectification

**Pins:**
- A [pin 2]
- K [pin 1]

### D7 — [TVS2700DRVR](https://flux.ai/lcsc/tvs2700drvr~i7sw.md)

- Manufacturer Part Number: TVS2700DRVR
- LCSC Part Number: C523797
- Role: Entry Protection
- Part Type: TVS
- Product Info Url: https://lcsc\.com/product\-detail/TVS\_Texas\-Instruments\-Texas\-Instruments\-TVS2700DRVR\_C523797\.html
- JLCPCB Part Class: Extended Part
- Role Details: IN4/5/6 to IEPE\_ENTRY; GND1/2/3/EP to local return\. 35V positive/5V negative surge screens, not assembled ESD rating\.
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: IO X3 Sensor Entry
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2005091933\_Texas\-Instruments\-TVS2700DRVR\_C523797\.pdf
- Package or Case Code: WSON\-6\_L2\.0\-W2\.0\-P0\.65\-BL\-EP

**Pins:**
- GND [pin 3]
- GND [pin 2]
- GND [pin 1]
- GND [pin 7]
- IN [pin 6]
- IN [pin 4]
- IN [pin 5]

### D8 — [BAV199LT1G](https://flux.ai/lcsc/bav199lt1g~4rlm.md)

- Role Details: Pins1\+2 SET,pin3 OUT form antiparallel transient clamps\. SET and OUT normally track within amplifier offset; both approximately0\.2V above IEPE\_ENTRY\.
- Role: Transient Protection
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010303\_onsemi\-BAV199LT1G\_C145516\.pdf
- Part Type: Diodes \- General Purpose
- Functional Group: SENSE U23 IEPE Excitation
- Manufacturer Name: onsemi\(安森美\)
- LCSC Part Number: C145516
- Package or Case Code: SOT\-23\_L2\.9\-W1\.3\-P1\.90\-LS2\.4\-BR
- Product Info Url: https://lcsc\.com/product\-detail/Diodes\-General\-Purpose\_ON\_BAV199LT1G\_BAV199LT1G\_C145516\.html
- Manufacturer Part Number: BAV199LT1G

**Pins:**
- A [pin 1]
- C [pin 2]
- C/A [pin 3]

### D9 — [BAT54S\-TP](https://flux.ai/lcsc/bat54s-tp~uulq.md)

- Part Type: Schottky Barrier Diodes \(SBD\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302134\_MCC\-Micro\-Commercial\-Components\-BAT54S\-TP\_C194858\.pdf
- LCSC Part Number: C194858
- Manufacturer Part Number: BAT54S\-TP
- Role Details: SeriesSchottky ground toADC node tocarrier3V3; nominal clamp current\<0\.1mA with22k
- Manufacturer Name: MCC\(美微科\)
- Role: Clamping
- Package or Case Code: SOT\-23\-3\_L3\.0\-W1\.7\-P0\.95\-LS2\.9\-BR
- Product Info Url: https://lcsc\.com/product\-detail/Schottky\-Barrier\-Diodes\-SBD\_Micro\-Commercial\-Components\-MCC\-BAT54S\-TP\_C194858\.html
- JLCPCB Part Class: Extended Part
- Functional Group: ANALOG U24 Precision Acquisition

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]

### F1 — [1206T2A63V](https://flux.ai/lcsc/1206t2a63v~l0oz.md)

- Manufacturer Part Number: 1206T2A63V
- Package or Case Code: F1206
- Functional Group: PROTECT F1 DC Entry
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409272302\_Walter\-Elec\-1206T2A63V\_C354895\.pdf
- Role Details: 2A63VDC slow fuse50A breaking\. Reserved total0\.983A worst9V;40C derating/startup/adapter prospective fault\-current must be qualified\. Not precise current limiter or sustained\-overvoltage certification\.
- Role: Protection
- Manufacturer Name: WALTER\(华德\)
- LCSC Part Number: C354895
- Part Type: Fuses
- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/Others\_Walter\-Elec\-1206T2A63V\_C354895\.html

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### IC1 — [TC4427AEOA713](https://flux.ai/silicon-yard/tc4427aeoa713~6s.md)

- Functional Group: IO U1 Shutdown Contact
- Symbol Style: parametric\-v1
- Role: Switching
- Part Type: Integrated Circuit
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/c980361c3a5b4f5b04b27e32286284437e896d0f2325398f733ad478eff59601\.pdf
- Role Details: ChannelA receives5V\-domain40kHz50%duty via U6 partial\-power\-isolating translator, not direct MCU GPIO; firmware stops pulses ontrip/disarm/not\-ready\. IN\_B grounded, OUT\_B NC; no active dump\. Bench qualification pending\.
- Manufacturer Name: Microchip Technology
- Manufacturer Part Number: TC4427AEOA713
- Frequency: 40000Hz

**Pins:**
- GND [pin 3]
- IN\_A [pin 2]
- IN\_B [pin 4]
- NC\_1 [pin 1]
- NC\_2 [pin 8]
- OUT\_A [pin 7]
- OUT\_B [pin 5]
- VDD [pin 6]

### IC2 — [LTC6993IS6\-2\#TRPBF](https://flux.ai/vasyl/ltc6993is6-2trpbf~7ea.md)

- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/LTC6993\-6993\-1\-6993\-2\-6993\-3\-6993\-4\.pdf
- Part Type: Integrated Circuit
- Role: Timing
- Functional Group: IO U1 Shutdown Contact
- Role Details: Rising fresh\-sample HEALTH\_ACK edges; \~10ms provisional timeout; POL=0\.
- Manufacturer Name: Analog Devices Inc\.
- Manufacturer Part Number: LTC6993IS6\-2\#TRPBF

**Pins:**
- DIV [pin 4]
- GND [pin 2]
- OUT [pin 6]
- SET [pin 3]
- TRIG [pin 1]
- V\+ [pin 5]

### IC3 — [LMR36520FADDAR](https://flux.ai/adrian95/lmr36520faddar~d6b.md)

- Part Type: Integrated Circuit
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/lmr36520\.pdf
- Manufacturer Part Number: LMR36520FADDAR
- Role: Power Conversion
- Functional Group: POWER IC3 5V Buck
- Manufacturer Name: Texas Instruments
- Role Details: Digital5V peak0\.90A;2A\-rated 65V FPWM400kHz\. Full reserved input0\.983A at9V jack/8V protected allowance;12V adapter procurement\>=1\.5A recommended\. EN independent of POWER\_OK;ground thermal pad required\.
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- BOOT [pin 7]
- EN [pin 3]
- EP [pin 9]
- FB [pin 5]
- PG [pin 4]
- PGND [pin 1]
- SW [pin 8]
- VCC [pin 6]
- VIN [pin 2]

### IC4 — [LMR36520FADDAR](https://flux.ai/adrian95/lmr36520faddar~d6b.md)

- Part Type: Integrated Circuit
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/lmr36520\.pdf
- Manufacturer Part Number: LMR36520FADDAR
- Functional Group: POWER IC4 Analog Pre Buck
- Manufacturer Name: Texas Instruments
- Role Details: Independent6\.988V pre\-buck,310mApeak reserve including60mA IEPEboost;65V input\.22uH Lmin17\.6uH\>8\.65uH;crest0\.82A\. ENVIN, noPGdeadlock\.
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Power Conversion

**Pins:**
- BOOT [pin 7]
- EN [pin 3]
- EP [pin 9]
- FB [pin 5]
- PG [pin 4]
- PGND [pin 1]
- SW [pin 8]
- VCC [pin 6]
- VIN [pin 2]

### J1 — Conn\_Coaxial

- Exclude from Pick & Place: true
- Functional Group: IO X3 Sensor Entry
- Role Details: Offboard031\-10 front mount isolated panel BNC: symbolic In1=center solder cup→X3:1; Ext2=shell ground tab→X3:2\. Symbol1/2 are harness IDs, not maker terminal numbers\. Insulation assembly/3D/panel drawing dimensional fit still review gate\.
- Role: Protection
- Manufacturer Part Number: 031\-10
- Connector Type: RF / Coaxial Connectors
- Mount: Panel
- Part Type: Connector
- Datasheet URL: https://media\.digikey\.com/pdf/Data%20Sheets/Amphenol%20PDFs/BNC%2050%20ohm%20bulkhead%20receptacles\.pdf
- Manufacturer Name: Amphenol RF
- Connector Gender: Receptacle
- Exclude from PCB: true

**Pins:**
- Ext [pin 2]
- In [pin 1]

### J2 — Conn\_01x24

- Datasheet URL: https://suddendocs\.samtec\.com/prints/ssq\-1xx\-xx\-xx\-x\-xx\-xxx\-xx\-xx\.pdf
- Exclude from Pick & Place: true
- Role Details: SSQ\-124\-02\-G\-S24\-position2\.54mm LEFTrowfrommoduleUSBend;standardKiCadcarrierpattern,hand\-fitheaders\. PROVISIONALlayoutconstraint: orientmatedU31ownmicroUSBendtowardREAR withrearendpanelremoved cableinsertion/removal/body/bend/fingeraccess\. Noactualplacement/paneldatum/clearanceimplemented;qualifyduringlayout/MCAD\. Drill/mating/15\.24mmrowspacing physicallyverifybeforerelease\.
- Role: Interconnect
- Manufacturer Part Number: SSQ\-124\-02\-G\-S
- Manufacturer Name: Samtec
- Functional Group: MCU U31 Teensy Carrier
- Part Type: Connector

**Pins:**
- Pin\_1 [pin 1]
- Pin\_10 [pin 10]
- Pin\_11 [pin 11]
- Pin\_12 [pin 12]
- Pin\_13 [pin 13]
- Pin\_14 [pin 14]
- Pin\_15 [pin 15]
- Pin\_16 [pin 16]
- Pin\_17 [pin 17]
- Pin\_18 [pin 18]
- Pin\_19 [pin 19]
- Pin\_2 [pin 2]
- Pin\_20 [pin 20]
- Pin\_21 [pin 21]
- Pin\_22 [pin 22]
- Pin\_23 [pin 23]
- Pin\_24 [pin 24]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]
- Pin\_6 [pin 6]
- Pin\_7 [pin 7]
- Pin\_8 [pin 8]
- Pin\_9 [pin 9]

### J3 — Conn\_01x24

- Datasheet URL: https://suddendocs\.samtec\.com/prints/ssq\-1xx\-xx\-xx\-x\-xx\-xxx\-xx\-xx\.pdf
- Functional Group: MCU U31 Teensy Carrier
- Role: Interconnect
- Manufacturer Part Number: SSQ\-124\-02\-G\-S
- Exclude from Pick & Place: true
- Role Details: SSQ\-124\-02\-G\-S24\-position2\.54mm RIGHTrowfrommoduleUSBend;standardKiCadcarrierpattern,hand\-fitheaders\. PROVISIONALlayoutconstraint: orientmatedU31ownmicroUSBendtowardREAR withrearendpanelremoved cableinsertion/removal/body/bend/fingeraccess\. Noactualplacement/paneldatum/clearanceimplemented;qualifyduringlayout/MCAD\. Drill/mating/15\.24mmrowspacing physicallyverifybeforerelease\.
- Manufacturer Name: Samtec
- Part Type: Connector

**Pins:**
- Pin\_1 [pin 1]
- Pin\_10 [pin 10]
- Pin\_11 [pin 11]
- Pin\_12 [pin 12]
- Pin\_13 [pin 13]
- Pin\_14 [pin 14]
- Pin\_15 [pin 15]
- Pin\_16 [pin 16]
- Pin\_17 [pin 17]
- Pin\_18 [pin 18]
- Pin\_19 [pin 19]
- Pin\_2 [pin 2]
- Pin\_20 [pin 20]
- Pin\_21 [pin 21]
- Pin\_22 [pin 22]
- Pin\_23 [pin 23]
- Pin\_24 [pin 24]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]
- Pin\_6 [pin 6]
- Pin\_7 [pin 7]
- Pin\_8 [pin 8]
- Pin\_9 [pin 9]

### J4 — [Pin Header 01x03 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-01x03-254mm-vertical~cp4.md)

- Part Type: Connector
- Functional Group: IO J4 UART Debug
- Role Details: 3V3UART only:1GND2TX3RX; no power pin\. RX throughU34; TX throughU32:A8/B8 plus1k\. TX disabled until AFE bank enabled; not early boot/programming console\. Do not attach5VTTL adapter\.
- Role: Debug
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- Pin\_1 [pin 1]
- Pin\_2 [pin 2]
- Pin\_3 [pin 3]

### J5 — J1B1211CCD

- Part Type: Connector
- Manufacturer Name: Cetus
- Datasheet URL: https://www\.pjrc\.com/store/j1b1211ccd\.pdf
- LCSC Part Number: C910371
- Reference Design URL: https://www\.pjrc\.com/store/schematic\_ethernet\.png
- Functional Group: IO J5 Ethernet
- Exclude from Pick & Place: true
- Placement Constraint: REAR PANEL RJ45 opening alignment; maintain CHASSIS\-only shield/BobSmith and magnetics barrier\. No PCB movement authorized in final schematic batch\.
- Manufacturer Part Number: J1B1211CCD
- Role Details: PJRC supported J1B1211CCD; imported exactKiCadCetus footprint checked against maker top\-view drawing\. REARpanel alignment only constraint, no placement\. Pin8 internal cable\-side1nF BobSmith return and BOTHshell tabs13/13\_2 toCHASSIS, NEVERlocalGND; noearthwire\. Internal capacitor voltage rating not stated inCetus drawing; assembled isolation verifyonbench\. Green10A/9K viaTeensyon\-module150ohm; yellow unused\. LCSC C910371stock listed2548\-3091snapshot, JLCcatalog present; hand\-fit/consign, recheckstock\. 3DSTEPimport failed; noMCADfit claim\.
- Role: Isolation
- Purchase Url: https://www\.lcsc\.com/product\-detail/C910371\.html

**Pins:**
- 13\_2 [pin 13\_2]
- CHS\_GROUND [pin 8]
- GREEN\_A [pin 10]
- GREEN\_K [pin 9]
- NC [pin 7]
- RCT [pin 5]
- RD\- [pin 6]
- RD\+ [pin 4]
- SHIELD [pin 13]
- TCT [pin 2]
- TD\- [pin 3]
- TD\+ [pin 1]
- YELLOW\_A [pin 12]
- YELLOW\_K [pin 11]

### J6 — Teensy\_Ethernet\_2mm

- Manufacturer Part Number: Teensy\_Ethernet\_2mm
- Functional Group: IO J5 Ethernet
- Role: Coupling
- Purchase Url: https://www\.sparkfun\.com/ethernet\-kit\-for\-teensy\-4\-1\.html
- Exclude from Pick & Place: true
- Role Details: Carrier generic2x3/2mm PJRCkitheader with exactKiCadstandard footprint\. CUSTOMlogical label, notmanufacturerMPN\. J6pins1TX\+2TX\-3GND4LED5RX\-6RX\+\. Modulepads are U31T\+/T\-/GND/LED/R\-/R\+ sourcePJRCcard11b andschematic41; nonphysicalmodulelibrarynumbersignored\. Hand\-fit moduleheader and short6wire ribbon usingPJRCkit/89361\-706LFsocket reference; continuity bySIGNALbeforepower, doNOTassumestraight\-throughnumericalorientation\. NoEthernetthroughJ2/J3\.
- Datasheet URL: https://www\.pjrc\.com/store/ethernet\_kit\.html
- Part Type: Connector

**Pins:**
- GND [pin 3]
- LED [pin 4]
- RX\- [pin 5]
- RX\+ [pin 6]
- TX\- [pin 2]
- TX\+ [pin 1]

### J7 — Conn\_Coaxial

- Manufacturer Part Number: 031\-10
- Exclude from Pick & Place: true
- Exclude from PCB: true
- Mount: Panel
- Part Type: Connector
- Datasheet URL: https://www\.amphenolrf\.com/031\-10\.html
- Manufacturer Name: Amphenol RF
- Functional Group: IO X1 Floating Output
- Role Details: REAR offboard insulated 031\-10 BNC; symbolic In1=center solder cup to X1:1 VibRunner terminal8, Ext2=shell tab to X1:2 floating digital ground\. NOT localGND/CHASSIS\. Supplied insulation plus insulating washers/panel stack required; continuity/insulation acceptance before use\. Hand\-fit, stock unverified\.
- Role: Isolation

**Pins:**
- Ext [pin 2]
- In [pin 1]

### J8 — L712A

- Voltage Rating: 24V
- Mount: Panel
- Exclude from PCB: true
- Manufacturer Name: Switchcraft
- Exclude from Pick & Place: true
- Functional Group: IO X2 DC Harness
- Role Details: REAR hand\-fit Switchcraft L712A long\-bushing locking2\.5mm panel jack; selected matching plug761K center\-positive\. CENTER\_PIN→X2:1; SLEEVE→X2:2 localGND; SHUNT unusedNC\. Functional terminal labels NOT maker lug numbers\. INSULATE metal bushing/body from CHASSIS with shoulder washers/panel stack; verify contact/bushing continuity and lug map before soldering\. No USB power\. Stock unverified;3D/drawing fit unqualified\.
- Manufacturer Part Number: L712A
- Part Type: Connector
- Role: Coupling
- Datasheet URL: https://www\.switchcraft\.com/dc\-power\-jack\-0\-100\-2\-5mm\-pin\-solder\-lugs\-termination\-long\-bushing/l712a/
- Current Rating: 5A

**Pins:**
- CENTER\_PIN [pin CENTER]
- SHUNT [pin SHUNT]
- SLEEVE [pin SLEEVE]

### LED1 — [LTW\-C191TS5](https://flux.ai/adrian95/ltw-c191ts5~99a.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: MCU U31 Teensy Carrier
- Current: 5\.13mA
- Current Rating: 20mA
- Role: Power Indicator
- Part Type: LED
- LCSC Part Number: C125123
- Datasheet URL: https://www\.tme\.com/Document/ccb6f8f837c4cd95d77cba03b355ce21/LTW\-C191TS5\.pdf
- Role Details: WhitePower lightpipeLED: R88=390ohm from5V direct;approx5\.13mA usingtypcurveVF3\.0V at5mA/25C\.20mAabsoluteDCrating at25C\. Brightness/current benchacceptance\.
- Manufacturer Part Number: LTW\-C191TS5
- Manufacturer Name: Lite\-On Inc\.
- Placement Constraint: FRONT BOARD EDGE: white Power lightpipe; align optical axis/height with other four LEDs; spacing/alignment and pipe choice resolve in layout, no PCB move authorized\.

**Pins:**
- A [pin 2]
- K [pin 1]

### LED2 — [APTD1608CGCK](https://flux.ai/silicon-yard/aptd1608cgck~ur.md)

- Role Details: GreenArmed lightpipeLED viaQ4/R89=620ohm from5V;approx4\.74mA usingcurveinterpolationVF1\.96V andassumedVCE0\.1V\.30mAabsoluteDCrating at25C;statusonly\.
- Placement Constraint: FRONT BOARD EDGE: green Armed lightpipe; common optical alignment and spacing to resolve in layout\.
- Role: Status Indicator
- Part Type: LED
- Current: 4\.74mA
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/f068c3c9d37b7f4862d4305da7361a3de2eaffd55dcf1fd1e0b7a2af67fb0e16\.pdf
- Functional Group: MCU U31 Teensy Carrier
- Manufacturer Part Number: APTD1608CGCK
- Manufacturer Name: Kingbright
- License: https://creativecommons\.org/licenses/by/4\.0/
- Current Rating: 30mA

**Pins:**
- A [pin 2]
- K [pin 1]

### LED3 — [HSMA\-C190](https://flux.ai/adrian95/hsma-c190~1oy.md)

- Functional Group: MCU U31 Teensy Carrier
- Role: Status Indicator
- Current: 5\.36mA
- Part Type: LED
- Datasheet URL: https://docs\.broadcom\.com/docs/AV02\-0112EN
- Role Details: AmberBypass lightpipeLED viaQ1/R90=560ohm from5V;approx5\.36mA usingVFtyp1\.9V specified20mA andassumedVCE0\.1V\.25mAabsoluteDCrating25C;verifycurrent/brightness onbench\.
- Manufacturer Part Number: HSMA\-C190
- Manufacturer Name: Broadcom Limited
- Placement Constraint: FRONT BOARD EDGE: amber Bypass lightpipe; common optical alignment and spacing to resolve in layout\.
- Current Rating: 25mA
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- A [pin 2]
- K [pin 1]

### LED4 — [HSMA\-C190](https://flux.ai/adrian95/hsma-c190~1oy.md)

- Placement Constraint: FRONT BOARD EDGE: amber Fault lightpipe; common optical alignment and spacing to resolve in layout\.
- Current: 5\.36mA
- Role Details: AmberFault lightpipeLED viaQ5/R92=560ohm from5V;approx5\.36mA usingVFtyp1\.9V specified20mA andassumedVCE0\.1V\.25mAabsoluteDCrating25C;verifycurrent/brightness onbench\.
- Part Type: LED
- Datasheet URL: https://docs\.broadcom\.com/docs/AV02\-0112EN
- Manufacturer Part Number: HSMA\-C190
- Manufacturer Name: Broadcom Limited
- Role: Status Indicator
- Current Rating: 25mA
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: MCU U31 Teensy Carrier

**Pins:**
- A [pin 2]
- K [pin 1]

### LED5 — [KT\-0603R](https://flux.ai/adrian95/kt-0603r~7c.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Placement Constraint: FRONT BOARD EDGE: red Tripped lightpipe; common optical alignment and spacing to resolve in layout\.
- Current: 4\.77mA
- Current Rating: 25mA
- Manufacturer Name: Hubei KENTO Elec
- Manufacturer Part Number: KT\-0603R
- Functional Group: MCU U31 Teensy Carrier
- Part Type: LED
- Role Details: RedTripped lightpipeLED viaQ2/R91=620ohm from5V;approx4\.77mA usingcurveinterpolatedVF1\.94V andassumedVCE0\.1V\.25mAabsoluteDCrating25C;separateGPIO,notSHUTDOWN\_TRIP\.
- Role: Status Indicator
- Datasheet URL: https://www\.lcsc\.com/datasheet/lcsc\_datasheet\_1810231112\_Hubei\-KENTO\-Elec\-KT\-0603R\_C2286\.pdf

**Pins:**
- A [pin 2]
- K [pin 1]

### Q1 — [MMBT3904LT1G](https://flux.ai/openpartlist/mmbt3904lt1g~s5.md)

- Manufacturer Part Number: MMBT3904LT1G
- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/mmbt3904lt1\-d\.pdf
- Role: LED Driver
- Manufacturer Name: onsemi
- Part Type: Transistor
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: MCU U31 Teensy Carrier
- Role Details: Low\-sideLEDNPN, now\~5mAcollector;10kbase and100kB\-E pulldown retained,GPIO\~0\.25mA\. VCE0\.10Vtypical engineeringassumption atthisdrive,notdatasheetexactpoint;verifycurrent/VCE onbench\.

**Pins:**
- B [pin 1]
- C [pin 3]
- E [pin 2]

### Q2 — [MMBT3904LT1G](https://flux.ai/openpartlist/mmbt3904lt1g~s5.md)

- Manufacturer Part Number: MMBT3904LT1G
- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/mmbt3904lt1\-d\.pdf
- Role Details: Low\-sideLEDNPN, now\~5mAcollector;10kbase and100kB\-E pulldown retained,GPIO\~0\.25mA\. VCE0\.10Vtypical engineeringassumption atthisdrive,notdatasheetexactpoint;verifycurrent/VCE onbench\.
- Manufacturer Name: onsemi
- Part Type: Transistor
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: LED Driver
- Functional Group: MCU U31 Teensy Carrier

**Pins:**
- B [pin 1]
- C [pin 3]
- E [pin 2]

### Q3 — [MMBT3904WT1G](https://flux.ai/adrian95/mmbt3904wt1g~y5c.md)

- Manufacturer Part Number: MMBT3904WT1G
- Datasheet URL: https://www\.onsemi\.com/pub/Collateral/MMBT3904WT1\-D\.PDF
- Manufacturer Name: onsemi
- Role: Switching
- Package or Case Code: SOT65P220X100\-3N
- Role Details: Direct series PhotoMOS LED cutoff controlled onlyby three\-input qualified enable; commandedtrip interruptsLED evenifpulse pumpcontinues\. Saturationstorage/fulltempdelay unqualified\.
- Part Type: Transistor
- Functional Group: IO U1 Shutdown Contact
- License: onsemi

**Pins:**
- B [pin 1]
- C [pin 3]
- E [pin 2]

### Q4 — [MMBT3904LT1G](https://flux.ai/openpartlist/mmbt3904lt1g~s5.md)

- Manufacturer Part Number: MMBT3904LT1G
- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/mmbt3904lt1\-d\.pdf
- Functional Group: MCU U31 Teensy Carrier
- Manufacturer Name: onsemi
- Part Type: Transistor
- Role: LED Driver
- Role Details: Low\-sideLEDNPN, now\~5mAcollector;10kbase and100kB\-E pulldown retained,GPIO\~0\.25mA\. VCE0\.10Vtypical engineeringassumption atthisdrive,notdatasheetexactpoint;verifycurrent/VCE onbench\.
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- B [pin 1]
- C [pin 3]
- E [pin 2]

### Q5 — [MMBT3904LT1G](https://flux.ai/openpartlist/mmbt3904lt1g~s5.md)

- Manufacturer Part Number: MMBT3904LT1G
- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/mmbt3904lt1\-d\.pdf
- Role Details: Low\-sideLEDNPN, now\~5mAcollector;10kbase and100kB\-E pulldown retained,GPIO\~0\.25mA\. VCE0\.10Vtypical engineeringassumption atthisdrive,notdatasheetexactpoint;verifycurrent/VCE onbench\.
- Manufacturer Name: onsemi
- Part Type: Transistor
- Functional Group: MCU U31 Teensy Carrier
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: LED Driver

**Pins:**
- B [pin 1]
- C [pin 3]
- E [pin 2]

### U1 — [AQY212SX](https://flux.ai/lcsc/aqy212sx~z76f.md)

- Part Type: Solid State Relays \- MOS Output \(PhotoMOS\)
- Manufacturer Part Number: AQY212SX
- LCSC Part Number: C719754
- Role Details: Normally\-open floating permission contact\. Pins1/2 local LED; pins3/4 only floating controller output domain\. No readback\. 10–40C release qualification pending\.
- Functional Group: IO U1 Shutdown Contact
- JLCPCB Part Class: Extended Part
- Role: Isolation
- Manufacturer Name: PANASONIC\(松下\)
- Package or Case Code: SOP\-4\_L4\.3\-W4\.4\-P2\.54\-LS6\.8\-TR

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

### U10 — [TPS3808G01QDBVRQ1](https://flux.ai/lcsc/tps3808g01qdbvrq1~y4vf.md)

- Manufacturer Part Number: TPS3808G01QDBVRQ1
- JLCPCB Part Class: Extended Part
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- Manufacturer Name: TI\(德州仪器\)
- Role Details: 5VA supervisor powered from monitored 5VA; MR tied 5VA\. Own\-rail RESET pullup/bleed into Ioff\-tolerant receiver; no shared RESET wired\-OR\.
- LCSC Part Number: C130062
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010302\_Texas\-Instruments\-TPS3808G01QDBVRQ1\_C130062\.pdf
- Role: Protection
- Functional Group: POWER U8 Clean 5VA
- Part Type: Monitors & Reset Circuits
- Product Info Url: https://lcsc\.com/product\-detail/PMIC\-Supervisors\_TI\_TPS3808G01QDBVRQ1\_TPS3808G01QDBVRQ1\_C130062\.html

**Pins:**
- \~\{MR\} [pin 3]
- \~\{RESET\} [pin 1]
- CT [pin 4]
- GND [pin 2]
- SENSE [pin 5]
- VDD [pin 6]

### U11 — [TPS3808G01QDBVRQ1](https://flux.ai/lcsc/tps3808g01qdbvrq1~y4vf.md)

- Manufacturer Part Number: TPS3808G01QDBVRQ1
- Role Details: 3V3A supervisor powered from monitored 3V3A; MR tied 3V3A\. Own\-rail RESET pullup/bleed into Ioff\-tolerant receiver; no shared RESET wired\-OR\.
- Role: Protection
- JLCPCB Part Class: Extended Part
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- Manufacturer Name: TI\(德州仪器\)
- LCSC Part Number: C130062
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010302\_Texas\-Instruments\-TPS3808G01QDBVRQ1\_C130062\.pdf
- Part Type: Monitors & Reset Circuits
- Functional Group: POWER U9 Clean 3V3A
- Product Info Url: https://lcsc\.com/product\-detail/PMIC\-Supervisors\_TI\_TPS3808G01QDBVRQ1\_TPS3808G01QDBVRQ1\_C130062\.html

**Pins:**
- \~\{MR\} [pin 3]
- \~\{RESET\} [pin 1]
- CT [pin 4]
- GND [pin 2]
- SENSE [pin 5]
- VDD [pin 6]

### U12 — [LT8330IS6\#TRMPBF](https://flux.ai/adrian95/lt8330is6trmpbf~4a7.md)

- Role Details: 5V\_IEPE\_LIMITED branch to retained28V\_PRE, now28\.64V nominal\.R28=169k/R29=10k;static27\.9795–29\.3043V;32mVline plus50mVpeakripple/regulationbudget\.U13 minimum excess headroom0\.4326V beyond500mV dropout;bench validate budgets,input4\.8–5\.3V\.
- Part Type: Integrated Circuit
- Role: Power Conversion
- Package or Case Code: SOT95P280X100\-6N
- Manufacturer Part Number: LT8330IS6\#TRMPBF
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/LT8330\.pdf
- Functional Group: POWER U12 IEPE Boost
- Operating Voltage: 5V
- Voltage: 28\.64V
- Manufacturer Name: Analog Devices

**Pins:**
- EN/UVLO [pin 4]
- FBX [pin 3]
- GND [pin 2]
- INTVCC [pin 5]
- SW [pin 1]
- VIN [pin 6]

### U13 — [LT3008ETS8\#TRPBF](https://flux.ai/lcsc/lt3008ets8trpbf~wvxr.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Analog\-Devices\-LT3008ETS8\-TRPBF\_C666115\.pdf
- Manufacturer Part Number: LT3008ETS8\#TRPBF
- Role: Power Conversion
- Functional Group: POWER U13 IEPE Clean Rail
- Manufacturer Name: ADI\(亚德诺\)
- LCSC Part Number: C666115
- JLCPCB Part Class: Extended Part
- Operating Voltage: 28\.64V
- Voltage: 26\.3284V
- Package or Case Code: TSOT\-8\_L2\.9\-W1\.6\-P0\.65\-LS2\.8\-BL
- Role Details: Retained26V\_IEPE now26\.3284V nominal;R50\+R30=428\.81k/R31=10k\.Reference588–612mV,bias±10nA,feedback0\.1625% \-\>25\.7159–26\.9449V static\.20mVpeak ripple/regulationbudget;0\.4326V upstream margin after500mV dropout\.10mAreserve,20mArated;bench validate\.
- Product Info Url: https://lcsc\.com/product\-detail/presales\_Analog\-Devices\-ADI\-LT3008ETS8\-TRPBF\_C666115\.html

**Pins:**
- \~\{SHDN\} [pin 1]
- ADJ/SENSE [pin 7]
- GND [pin 4]
- GND [pin 2]
- GND [pin 3]
- IN [pin 5]
- NC [pin 8]
- OUT [pin 6]

### U14 — [TPS2553DDBVR](https://flux.ai/lcsc/tps2553ddbvr~feql.md)

- Part Type: Power Distribution Switches
- Functional Group: POWER U12 IEPE Boost
- LCSC Part Number: C521201
- Role: Current Limiting
- Manufacturer Part Number: TPS2553DDBVR
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Texas\-Instruments\-TPS2553DDBVR\_C521201\.pdf
- JLCPCB Part Class: Extended Part
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- Role Details: 5V input branch,75k0\.1%ILIM gives313\.6–397\.4mA; thermal retry notlatched\. Fault test bench gate\.
- Manufacturer Name: TI\(德州仪器\)
- Product Info Url: https://lcsc\.com/product\-detail/PMIC\-Power\-Distribution\-Switches\_Texas\-Instruments\-Texas\-Instruments\-TPS2553DDBVR\_C521201\.html

**Pins:**
- \#FAULT [pin 4]
- EN [pin 3]
- GND [pin 2]
- ILIM [pin 5]
- IN [pin 1]
- OUT [pin 6]

### U15 — [TPS3842A011DRLR](https://flux.ai/silicon-yard/tps3842a011drlr~gy.md)

- Operating Voltage: 26\.3284V
- Package or Case Code: SOT\-563, SOT\-666
- Symbol Style: parametric\-v1
- Role: Protection
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Texas Instruments
- Manufacturer Part Number: TPS3842A011DRLR
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/db764aad505d35df83404256fd2e16c42cd0d5c1ef5ec57319bcab556ac26062\.pdf
- Part Type: Power Management
- Functional Group: POWER U13 IEPE Clean Rail
- Role Details: UV finalrailhealth with unchanged340k/10k;0\.7V negative\-going nominal24\.5V,allocated falling24\.0479–24\.9547V,maximumrelease25\.3347V\.42V VDD rating\.CTRdelayunchanged\.Notproof\>=24Vconnectorcompliance duringbrownout\.

**Pins:**
- CTR [pin 6]
- CTS [pin 4]
- GND [pin 5]
- RESET [pin 3]
- SENSE [pin 2]
- VDD [pin 1]

### U16 — [SN74LVC1G17DBVRG4](https://flux.ai/lcsc/sn74lvc1g17dbvrg4~f8yi.md)

- JLCPCB Part Class: Extended Part
- LCSC Part Number: C2877886
- Functional Group: PROTECT U21 Rail Permission
- Part Type: Buffers / Drivers
- Symbol Style: parametric\-v1
- Package or Case Code: SOT\-23\-5\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Role: Logic\-level Shifting
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/081de5a31af035a9ac661ec838d81de7f1799d5102f1d4d1932776156b599c1e\.pdf
- Manufacturer Part Number: SN74LVC1G17DBVRG4
- Role Details: Carrier3V3 powered Schmitt healthy receiver;input0–5\.5V,Ioff±10uA;localrailRESET bias defaultlow;allrailAND permission\.
- Manufacturer Name: TI\(德州仪器\)

**Pins:**
- A [pin 2]
- GND [pin 3]
- N\.C [pin 1]
- VCC [pin 5]
- Y [pin 4]

### U17 — [SN74LVC1G17DBVRG4](https://flux.ai/lcsc/sn74lvc1g17dbvrg4~f8yi.md)

- JLCPCB Part Class: Extended Part
- LCSC Part Number: C2877886
- Part Type: Buffers / Drivers
- Symbol Style: parametric\-v1
- Package or Case Code: SOT\-23\-5\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Role Details: Carrier3V3 powered Schmitt healthy receiver;input0–5\.5V,Ioff±10uA;localrailRESET bias defaultlow;allrailAND permission\.
- Functional Group: PROTECT U21 Rail Permission
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/081de5a31af035a9ac661ec838d81de7f1799d5102f1d4d1932776156b599c1e\.pdf
- Role: Logic\-level Shifting
- Manufacturer Part Number: SN74LVC1G17DBVRG4
- Manufacturer Name: TI\(德州仪器\)

**Pins:**
- A [pin 2]
- GND [pin 3]
- N\.C [pin 1]
- VCC [pin 5]
- Y [pin 4]

### U18 — [SN74LVC1G17DBVRG4](https://flux.ai/lcsc/sn74lvc1g17dbvrg4~f8yi.md)

- JLCPCB Part Class: Extended Part
- LCSC Part Number: C2877886
- Role Details: Carrier3V3 powered Schmitt healthy receiver;input0–5\.5V,Ioff±10uA;localrailRESET bias defaultlow;allrailAND permission\.
- Part Type: Buffers / Drivers
- Symbol Style: parametric\-v1
- Package or Case Code: SOT\-23\-5\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Functional Group: PROTECT U21 Rail Permission
- Role: Logic\-level Shifting
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/081de5a31af035a9ac661ec838d81de7f1799d5102f1d4d1932776156b599c1e\.pdf
- Manufacturer Part Number: SN74LVC1G17DBVRG4
- Manufacturer Name: TI\(德州仪器\)

**Pins:**
- A [pin 2]
- GND [pin 3]
- N\.C [pin 1]
- VCC [pin 5]
- Y [pin 4]

### U19 — [SN74LVC1G17DBVRG4](https://flux.ai/lcsc/sn74lvc1g17dbvrg4~f8yi.md)

- JLCPCB Part Class: Extended Part
- LCSC Part Number: C2877886
- Part Type: Buffers / Drivers
- Symbol Style: parametric\-v1
- Package or Case Code: SOT\-23\-5\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Functional Group: PROTECT U21 Rail Permission
- Role Details: Carrier3V3 powered Schmitt healthy receiver;input0–5\.5V,Ioff±10uA;localrailRESET bias defaultlow;allrailAND permission\.
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/081de5a31af035a9ac661ec838d81de7f1799d5102f1d4d1932776156b599c1e\.pdf
- Manufacturer Part Number: SN74LVC1G17DBVRG4
- Role: Logic\-level Shifting
- Manufacturer Name: TI\(德州仪器\)

**Pins:**
- A [pin 2]
- GND [pin 3]
- N\.C [pin 1]
- VCC [pin 5]
- Y [pin 4]

### U2 — [SN74LVC1G11DCKRG4](https://flux.ai/lcsc/sn74lvc1g11dckrg4~0eyl.md)

- Role Details: AND qualified health, hardware supervisor release and no\-trip\.
- Functional Group: IO U1 Shutdown Contact
- Manufacturer Part Number: SN74LVC1G11DCKRG4
- Part Type: Gates
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74lvc1g11\.pdf
- Manufacturer Name: TI\(德州仪器\)
- LCSC Part Number: C2878854
- Role: Switching
- Package or Case Code: SC\-70\-6\_L2\.0\-W1\.3\-P0\.65\-LS2\.1\-BR

**Pins:**
- A [pin 1]
- B [pin 3]
- C [pin 6]
- GND [pin 2]
- VCC [pin 5]
- Y [pin 4]

### U20 — [SN74LVC1G17DBVRG4](https://flux.ai/lcsc/sn74lvc1g17dbvrg4~f8yi.md)

- JLCPCB Part Class: Extended Part
- LCSC Part Number: C2877886
- Functional Group: PROTECT U21 Rail Permission
- Part Type: Buffers / Drivers
- Symbol Style: parametric\-v1
- Package or Case Code: SOT\-23\-5\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Role Details: Carrier3V3 powered Schmitt healthy receiver;input0–5\.5V,Ioff±10uA;localrailRESET bias defaultlow;allrailAND permission\.
- Role: Logic\-level Shifting
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/081de5a31af035a9ac661ec838d81de7f1799d5102f1d4d1932776156b599c1e\.pdf
- Manufacturer Part Number: SN74LVC1G17DBVRG4
- Manufacturer Name: TI\(德州仪器\)

**Pins:**
- A [pin 2]
- GND [pin 3]
- N\.C [pin 1]
- VCC [pin 5]
- Y [pin 4]

### U21 — [SN74LVC1G11DCKRG4](https://flux.ai/lcsc/sn74lvc1g11dckrg4~0eyl.md)

- Manufacturer Part Number: SN74LVC1G11DCKRG4
- Part Type: Gates
- Functional Group: PROTECT U21 Rail Permission
- Role: Switching
- Manufacturer Name: TI\(德州仪器\)
- Role Details: ANDtree requires5V/3V3/5VA/3V3A/final26V; RELEASE qualifiesthroughU5MRonly\.
- LCSC Part Number: C2878854
- Package or Case Code: SC\-70\-6\_L2\.0\-W1\.3\-P0\.65\-LS2\.1\-BR

**Pins:**
- A [pin 1]
- B [pin 3]
- C [pin 6]
- GND [pin 2]
- VCC [pin 5]
- Y [pin 4]

### U22 — [SN74LVC1G11DCKRG4](https://flux.ai/lcsc/sn74lvc1g11dckrg4~0eyl.md)

- Role: Switching
- Functional Group: PROTECT U21 Rail Permission
- Manufacturer Part Number: SN74LVC1G11DCKRG4
- Part Type: Gates
- Role Details: ANDtree requires5V/3V3/5VA/3V3A/final26V; RELEASE qualifiesthroughU5MRonly\.
- Manufacturer Name: TI\(德州仪器\)
- LCSC Part Number: C2878854
- Package or Case Code: SC\-70\-6\_L2\.0\-W1\.3\-P0\.65\-LS2\.1\-BR

**Pins:**
- A [pin 1]
- B [pin 3]
- C [pin 6]
- GND [pin 2]
- VCC [pin 5]
- Y [pin 4]

### U23 — [LT3092ETS8](https://flux.ai/vasyl/lt3092ets8~xs.md)

- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/lt3092\.pdf
- Functional Group: SENSE U23 IEPE Excitation
- Role: Current Source
- Manufacturer Part Number: LT3092ETS8
- Role Details: 4\.01mA excitation unchanged20k SET/50ohmOUT\.26V\_IEPE now26\.3284V nominal;approved1\.45Vdropout allowance\+0\.210Vsetting\+20mVrail\+10mVconnectorpath \-\>24\.0259Vallocatedminimumcompliance\.Maximumopen26\.9649V\. Engineering budgets,notguaranteed4mAdropout;firstboard\>=24V and\<=28Vbench acceptance mandatory\.
- Part Type: Integrated Circuit
- Operating Voltage: 26\.3284V
- Manufacturer Name: Analog Devices Inc\.

**Pins:**
- \~ [pin 8]
- \~ [pin 3]
- \~ [pin 4]
- \~ [pin 7]
- \~ [pin 5]
- \~ [pin 2]
- NC [pin 1]
- NC [pin 6]

### U24 — [AD7768\-1BCPZ](https://flux.ai/lcsc/ad7768-1bcpz~n0uu.md)

- JLCPCB Part Class: Extended Part
- Functional Group: ANALOG U24 Precision Acquisition
- Role Details: Block 4 ADC: median mode MCLK/4 sinc5 x64; future carrier interfaces
- Part Type: Analog To Digital Converters \(ADCs\)
- Manufacturer Name: ADI\(亚德诺\)
- Package or Case Code: QFN\-28\_L5\.0\-W4\.0\-P0\.50\-BL\-EP
- Manufacturer Part Number: AD7768\-1BCPZ
- Product Info Url: https://lcsc\.com/product\-detail/Analog\-To\-Digital\-Converters\-ADCs\_Analog\-Devices\_AD7768\-1BCPZ\_Analog\-Devices\-ADI\-LINEAR\-AD7768\-1BCPZ\_C651529\.html
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/AD7768\-1\.pdf
- Role: ADC
- LCSC Part Number: C651529

**Pins:**
- \~\{CS\} [pin 12]
- \~\{DRDY\} [pin 19]
- \~\{PIN\}/SPI [pin 6]
- \~\{RESET\} [pin 1]
- \~\{SYNC\_IN\} [pin 2]
- \~\{SYNC\_OUT\} [pin 3]
- AIN– [pin 26]
- AIN\+ [pin 27]
- AVDD1 [pin 23]
- AVDD2 [pin 22]
- AVSS [pin 21]
- CLKSEL [pin 8]
- DGND [pin 7]
- DOUT/\~\{RDY\} [pin 9]
- EP [pin 29]
- IOVDD [pin 5]
- MCLK/XTAL2 [pin 14]
- MODE0/GPIO0 [pin 15]
- MODE1/GPIO1 [pin 16]
- MODE2/GPIO2 [pin 17]
- MODE3/GPIO3\(START\#\) [pin 18]
- REF– [pin 25]
- REF\+ [pin 24]
- REGCAPA [pin 20]
- REGCAPD [pin 4]
- SCLK [pin 10]
- SDI [pin 11]
- VCM [pin 28]
- XTAL1 [pin 13]

### U25 — [ADR4540ARZ\-R7](https://flux.ai/lcsc/adr4540arz-r7~ty9l.md)

- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: ADR4540ARZ\-R7
- Package or Case Code: SOIC\-8\_L4\.9\-W3\.9\-P1\.27\-LS6\.0\-BL
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Analog\-Devices\-ADR4540ARZ\-R7\_C404002\.pdf
- Manufacturer Name: ADI\(亚德诺\)
- Product Info Url: https://lcsc\.com/product\-detail/Voltage\-References\_Analog\-Devices\-ADI\-ADR4540ARZ\-R7\_C404002\.html
- LCSC Part Number: C404002
- Functional Group: ANALOG U24 Precision Acquisition
- Part Type: Voltage References
- Role: Precision Reference
- Role Details: 4\.096V reference from5VA; ADC reference buffers must be configured

**Pins:**
- DNC [pin 8]
- GND [pin 4]
- NIC [pin 3]
- NIC [pin 7]
- NIC [pin 5]
- NIC [pin 1]
- VIN [pin 2]
- VOUT [pin 6]

### U26 — [DAC80501MDGSR](https://flux.ai/adrian95/dac80501mdgsr.md)

- Package or Case Code: 10\-VSSOP
- Datasheet URL: https://www\.ti\.com/lit/gpn/DAC80501
- Manufacturer Part Number: DAC80501MDGSR
- Role Details: POR midscale2\.5V with internal2\.5V reference andgain2; not a valid calibrated cancellation guarantee
- Part Type: Integrated Circuit
- Manufacturer Name: Texas Instruments
- Role: Bias Cancellation DAC
- Functional Group: ANALOG U24 Precision Acquisition
- Symbol Style: parametric\-v1

**Pins:**
- \~SYNC\~/A0 [pin 7]
- AGND [pin 4]
- NC\_1 [pin 3]
- NC\_2 [pin 9]
- SCLK/SCL [pin 6]
- SDIN/SDA [pin 8]
- SPI2C [pin 5]
- VDD [pin 1]
- VOUT [pin 2]
- VREFIO [pin 10]

### U27 — [THP210DR](https://flux.ai/lcsc/thp210dr~ceof.md)

- Package or Case Code: SOIC\-8\_L4\.9\-W3\.9\-P1\.27\-LS6\.0\-BL
- LCSC Part Number: C2873612
- Manufacturer Name: TI\(德州仪器\)
- Role Details: FDA gain2\.4 following planned0\.15 attenuator; not connected to HV
- Role: Amplification
- Part Type: Differential OpAmps
- Functional Group: ANALOG U24 Precision Acquisition
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/thp210\.pdf
- Manufacturer Part Number: THP210DR
- JLCPCB Part Class: Extended Part

**Pins:**
- \~\{PD\} [pin 7]
- IN\- [pin 1]
- IN\+ [pin 8]
- OUT\- [pin 5]
- OUT\+ [pin 4]
- VOCM [pin 2]
- VS\- [pin 6]
- VS\+ [pin 3]

### U28 — [ADG7421FBCPZ\-RL7](https://flux.ai/silicon-yard/adg7421fbcpz-rl7~0k.md)

- Role Details: 10:1 divider precedes S1; S2 separate bias monitor divider
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/adg7421f\.pdf
- Functional Group: ANALOG U24 Precision Acquisition
- Manufacturer Name: Analog Devices Inc\.
- Part Type: Integrated Circuit
- Manufacturer Part Number: ADG7421FBCPZ\-RL7
- Symbol Style: parametric\-v1
- Role: Protection

**Pins:**
- D1 [pin 10]
- D2 [pin 9]
- FF [pin 3]
- GND [pin 4]
- IN1 [pin 8]
- IN2 [pin 7]
- S1 [pin 1]
- S2 [pin 2]
- VDD [pin 5]
- VSS [pin 6]

### U29 — [OPA4192IDR](https://flux.ai/lcsc/opa4192idr~kmkb.md)

- JLCPCB Part Class: Extended Part
- Role: Amplification
- Package or Case Code: SOIC\-14\_L8\.7\-W3\.9\-P1\.27\-LS6\.0\-BL
- Role Details: 5VA quad RRIO DC coupled cancellation chain
- Functional Group: ANALOG U24 Precision Acquisition
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/opa4192\.pdf
- LCSC Part Number: C2057908
- Manufacturer Name: TI\(德州仪器\)
- Manufacturer Part Number: OPA4192IDR

**Pins:**
- \-INA [pin 2]
- \-INB [pin 6]
- \-INC [pin 9]
- \-IND [pin 13]
- \+INA [pin 3]
- \+INB [pin 5]
- \+INC [pin 10]
- \+IND [pin 12]
- OUTA [pin 1]
- OUTB [pin 7]
- OUTC [pin 8]
- OUTD [pin 14]
- V\- [pin 11]
- V\+ [pin 4]

### U3 — [SN74LVC1G04DCKR](https://flux.ai/vasy_skral/sn74lvc1g04dckr~6e.md)

- Part Type: Integrated Circuit
- Manufacturer Name: Texas Instruments
- Functional Group: IO U1 Shutdown Contact
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/sn74lvc1g04\.pdf
- Role: Switching
- Role Details: SHUTDOWN\_TRIP high means inhibit; default pullup\.
- Manufacturer Part Number: SN74LVC1G04DCKR

**Pins:**
- A [pin 2]
- GND [pin 3]
- NC [pin 1]
- VCC [pin 5]
- Y [pin 4]

### U30 — [ADG7421FBCPZ\-RL7](https://flux.ai/silicon-yard/adg7421fbcpz-rl7~0k.md)

- Role Details: Powered fromcarrier3V3 so absentMCUrail opens output; S1 bufferedbias/10,D1 toward22kclamp;unusedchannel grounded disabled
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/adg7421f\.pdf
- Role: Protection
- Functional Group: ANALOG U24 Precision Acquisition
- Manufacturer Name: Analog Devices Inc\.
- Part Type: Integrated Circuit
- Manufacturer Part Number: ADG7421FBCPZ\-RL7
- Symbol Style: parametric\-v1

**Pins:**
- D1 [pin 10]
- D2 [pin 9]
- FF [pin 3]
- GND [pin 4]
- IN1 [pin 8]
- IN2 [pin 7]
- S1 [pin 1]
- S2 [pin 2]
- VDD [pin 5]
- VSS [pin 6]

### U31 — [RT1062 Teensy 4\.1](https://flux.ai/jharwinbarrozo/rt1062-teensy-41~t8.md)

- Role: Controller
- Datasheet URL: https://www\.pjrc\.com/teensy/card11a\_rev4\_web\.pdf
- Manufacturer Part Number: DEV\-16771
- Functional Group: MCU U31 Teensy Carrier
- Role Details: SocketedTeensy4\.1 VINcarrier5V; separateTEENSY\_3V3 never tied tocarrier3V3\. Schematic\-onlyexcludedPCB/PnP,J2/J3owncopper\. Hand\-fit two24\-pinmale strips;VBATundersidewiretoBT1\. PROVISIONAL LAYOUTCONSTRAINT: TeensyownmicroUSB endtowardREAR;withrearendpanelremoved reservephysicalplug insertion/removal,cablebody/bend andfingeraccess\. Paneldatum/clearanceNOTimplemented orqualified;verifyinlayout/MCAD,noapprovedplacement\. ProgrammingonlythroughownmicroUSB;CUTVUSB\-VINpadbeforeFIRSTUSE\. UnplugsensorbeforeUSB;removeUSBbeforereconnectingsensor;USBgroundnotisolated\. Reset/uploadshutdown benchqualification remains\.
- Exclude from Pick & Place: true
- Manufacturer Name: PJRC / SparkFun
- Exclude from PCB: true

**Pins:**
- 3\.3V
- 3\.3V\_\_1
- 3\.3V\_\_2
- 5V
- A0
- A1
- A10
- A11
- A12
- A13
- A14
- A15
- A16
- A17
- A2
- A3
- A4
- A5
- A6
- A7
- A8
- A9
- BCLK2
- CRX3
- CS1
- CS2
- CS3
- CTX3
- D\-
- D\+
- GND
- GND\_\_1
- GND\_\_2
- GND\_\_3
- GND\_\_4
- IN2
- LED
- LRCLK2
- MCLK2
- MISO
- MOSI
- ON/OFF
- OUT1B
- OUT1C
- OUT1D
- OUT2
- PROGRAM
- R\-
- R\+
- RX1
- RX2
- RX7
- RX8
- SCK
- T\-
- T\+
- TX1
- TX2
- TX7
- TX8
- USB\_GND
- USB\_GND\_\_1
- VBAT
- VIN
- VUSB

### U32 — [SN74LVC8T245DGVR](https://flux.ai/lcsc/sn74lvc8t245dgvr~77fb.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010103\_Texas\-Instruments\-SN74LVC8T245DGVR\_C364886\.pdf
- LCSC Part Number: C364886
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: MCU U31 Teensy Carrier
- Product Info Url: https://lcsc\.com/product\-detail/Others\_Texas\-Instruments\-TI\-SN74LVC8T245DGVR\_C364886\.html
- JLCPCB Part Class: Extended Part
- Role: Level Translation
- Package or Case Code: TVSOP\-24\_L5\.0\-W4\.4\-P0\.40\-LS6\.4\-BL
- Role Details: SN74LVC8T245 VCC isolation either supply GND/Ioff; fixed A\-to\-B direction\. Output banks OE default disabled on MCU reset/upload; independent hardware shutdown chain unchanged\.
- Part Type: Translators / Level Shifters
- Manufacturer Part Number: SN74LVC8T245DGVR

**Pins:**
- \~\{OE\} [pin 22]
- A1 [pin 3]
- A2 [pin 4]
- A3 [pin 5]
- A4 [pin 6]
- A5 [pin 7]
- A6 [pin 8]
- A7 [pin 9]
- A8 [pin 10]
- B1 [pin 21]
- B2 [pin 20]
- B3 [pin 19]
- B4 [pin 18]
- B5 [pin 17]
- B6 [pin 16]
- B7 [pin 15]
- B8 [pin 14]
- DIR [pin 2]
- GND [pin 11]
- GND [pin 13]
- GND [pin 12]
- VCCA [pin 1]
- VCCB [pin 23]
- VCCB [pin 24]

### U33 — [SN74LVC8T245DGVR](https://flux.ai/lcsc/sn74lvc8t245dgvr~77fb.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010103\_Texas\-Instruments\-SN74LVC8T245DGVR\_C364886\.pdf
- LCSC Part Number: C364886
- Manufacturer Name: TI\(德州仪器\)
- Product Info Url: https://lcsc\.com/product\-detail/Others\_Texas\-Instruments\-TI\-SN74LVC8T245DGVR\_C364886\.html
- JLCPCB Part Class: Extended Part
- Functional Group: MCU U31 Teensy Carrier
- Package or Case Code: TVSOP\-24\_L5\.0\-W4\.4\-P0\.40\-LS6\.4\-BL
- Part Type: Translators / Level Shifters
- Role: Level Translation
- Manufacturer Part Number: SN74LVC8T245DGVR
- Role Details: SN74LVC8T245 VCC isolation either supply GND/Ioff; fixed A\-to\-B direction\. Output banks OE default disabled on MCU reset/upload; independent hardware shutdown chain unchanged\.

**Pins:**
- \~\{OE\} [pin 22]
- A1 [pin 3]
- A2 [pin 4]
- A3 [pin 5]
- A4 [pin 6]
- A5 [pin 7]
- A6 [pin 8]
- A7 [pin 9]
- A8 [pin 10]
- B1 [pin 21]
- B2 [pin 20]
- B3 [pin 19]
- B4 [pin 18]
- B5 [pin 17]
- B6 [pin 16]
- B7 [pin 15]
- B8 [pin 14]
- DIR [pin 2]
- GND [pin 11]
- GND [pin 13]
- GND [pin 12]
- VCCA [pin 1]
- VCCB [pin 23]
- VCCB [pin 24]

### U34 — [SN74LVC8T245DGVR](https://flux.ai/lcsc/sn74lvc8t245dgvr~77fb.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010103\_Texas\-Instruments\-SN74LVC8T245DGVR\_C364886\.pdf
- LCSC Part Number: C364886
- Manufacturer Name: TI\(德州仪器\)
- Product Info Url: https://lcsc\.com/product\-detail/Others\_Texas\-Instruments\-TI\-SN74LVC8T245DGVR\_C364886\.html
- JLCPCB Part Class: Extended Part
- Package or Case Code: TVSOP\-24\_L5\.0\-W4\.4\-P0\.40\-LS6\.4\-BL
- Role Details: SN74LVC8T245 VCC isolation either supply GND/Ioff; fixed A\-to\-B direction\. Output banks OE default disabled on MCU reset/upload; independent hardware shutdown chain unchanged\.
- Part Type: Translators / Level Shifters
- Role: Level Translation
- Functional Group: MCU U31 Teensy Carrier
- Manufacturer Part Number: SN74LVC8T245DGVR

**Pins:**
- \~\{OE\} [pin 22]
- A1 [pin 3]
- A2 [pin 4]
- A3 [pin 5]
- A4 [pin 6]
- A5 [pin 7]
- A6 [pin 8]
- A7 [pin 9]
- A8 [pin 10]
- B1 [pin 21]
- B2 [pin 20]
- B3 [pin 19]
- B4 [pin 18]
- B5 [pin 17]
- B6 [pin 16]
- B7 [pin 15]
- B8 [pin 14]
- DIR [pin 2]
- GND [pin 11]
- GND [pin 13]
- GND [pin 12]
- VCCA [pin 1]
- VCCB [pin 23]
- VCCB [pin 24]

### U35 — [SN74LVC8T245DGVR](https://flux.ai/lcsc/sn74lvc8t245dgvr~77fb.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010103\_Texas\-Instruments\-SN74LVC8T245DGVR\_C364886\.pdf
- LCSC Part Number: C364886
- Manufacturer Name: TI\(德州仪器\)
- Role Details: SN74LVC8T245 VCC isolation either supply GND/Ioff; fixed A\-to\-B direction\. Output banks OE default disabled on MCU reset/upload; independent hardware shutdown chain unchanged\.
- Product Info Url: https://lcsc\.com/product\-detail/Others\_Texas\-Instruments\-TI\-SN74LVC8T245DGVR\_C364886\.html
- JLCPCB Part Class: Extended Part
- Package or Case Code: TVSOP\-24\_L5\.0\-W4\.4\-P0\.40\-LS6\.4\-BL
- Part Type: Translators / Level Shifters
- Manufacturer Part Number: SN74LVC8T245DGVR
- Functional Group: MCU U31 Teensy Carrier
- Role: Level Translation

**Pins:**
- \~\{OE\} [pin 22]
- A1 [pin 3]
- A2 [pin 4]
- A3 [pin 5]
- A4 [pin 6]
- A5 [pin 7]
- A6 [pin 8]
- A7 [pin 9]
- A8 [pin 10]
- B1 [pin 21]
- B2 [pin 20]
- B3 [pin 19]
- B4 [pin 18]
- B5 [pin 17]
- B6 [pin 16]
- B7 [pin 15]
- B8 [pin 14]
- DIR [pin 2]
- GND [pin 11]
- GND [pin 13]
- GND [pin 12]
- VCCA [pin 1]
- VCCB [pin 23]
- VCCB [pin 24]

### U36 — [APS6404L\-3SQR\-SN](https://flux.ai/adrian95/aps6404l-3sqr-sn~jto.md)

- Datasheet URL: https://www\.mouser\.com/datasheet/2/1127/APM\_PSRAM\_QSPI\_APS6404L\_3SQR\_v2\_3\_PKG\-1954826\.pdf
- Part Type: Integrated Circuit
- Exclude from PCB: true
- Role: Energy Storage
- Functional Group: MCU U31 Teensy Carrier
- Manufacturer Name: AP Memory
- Manufacturer Part Number: APS6404L\-3SQR\-SN
- Role Details: 8MBPSRAM hand\-solder toSMALLERTeensyundersideSOIC8pads perPJRC\. Notcarrierfootprint/PnP\. Pin1CS\_RAM\(GPIO48\), separateflashCS51; memorysupplyTEENSY\_3V3\. UseEXTMEM startupandPJRCmemtest; nohold\-up claim\.
- License: https://creativecommons\.org/licenses/by/4\.0/
- Exclude from Pick & Place: true

**Pins:**
- \~CE [pin 1]
- SCLK [pin 6]
- SI/SIO\[0\] [pin 5]
- SIO\[2\] [pin 3]
- SIO\[3\] [pin 7]
- SO/SIO\[1\] [pin 2]
- VDD [pin 8]
- VSS [pin 4]

### U37 — [W25Q128JVSIM TR](https://flux.ai/jecstronic/w25q128jvsim-tr~btu.md)

- Manufacturer Part Number: W25Q128JVSIM TR
- Role Details: 16MBflash hand\-fitLARGERTeensyundersideSOIC8pads\. SupportedW25Q128JV\-M DTRLittleFSperPJRC8c2badab74a0\. SeparateCS51fromRAM48 sharedFlexSPI2bus\. NotcarrierPCB/PnP\. Noatomiccommit/endurance/hold\-updurabilityclaim\.
- Exclude from Pick & Place: true
- Manufacturer Name: Winbond Electronics
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: MCU U31 Teensy Carrier
- Datasheet URL: https://www\.winbond\.com/resource\-files/w25q128jv\_dtr%20revc%2003272018%20plus\.pdf
- Exclude from PCB: true
- Role: Energy Storage
- Part Type: Integrated Circuit

**Pins:**
- /CS [pin 1]
- /HOLD\_OR\_/RESET\_\(IO3\) [pin 7]
- /WP\_\(IO2\) [pin 3]
- CLK [pin 6]
- DI\_\(IO0\) [pin 5]
- DO\_\(IO1\) [pin 2]
- GND [pin 4]
- VCC [pin 8]

### U4 — [TPS3808G01QDBVRQ1](https://flux.ai/lcsc/tps3808g01qdbvrq1~y4vf.md)

- Manufacturer Part Number: TPS3808G01QDBVRQ1
- JLCPCB Part Class: Extended Part
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: IO U1 Shutdown Contact
- Role: Protection
- LCSC Part Number: C130062
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps3808\-q1\.pdf
- Part Type: Monitors & Reset Circuits
- Role Details: Digital 5V supervisor powered from monitored 5V; MR tied 5V\. Own\-rail RESET pullup/bleed into Ioff\-tolerant receiver; no shared RESET wired\-OR\.
- Product Info Url: https://lcsc\.com/product\-detail/PMIC\-Supervisors\_TI\_TPS3808G01QDBVRQ1\_TPS3808G01QDBVRQ1\_C130062\.html

**Pins:**
- \~\{MR\} [pin 3]
- \~\{RESET\} [pin 1]
- CT [pin 4]
- GND [pin 2]
- SENSE [pin 5]
- VDD [pin 6]

### U5 — [TPS3808G01QDBVRQ1](https://flux.ai/lcsc/tps3808g01qdbvrq1~y4vf.md)

- Manufacturer Part Number: TPS3808G01QDBVRQ1
- Functional Group: IO U1 Shutdown Contact
- JLCPCB Part Class: Extended Part
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BL
- Manufacturer Name: TI\(德州仪器\)
- Role: Protection
- Role Details: Carrier3V3\-powered supervisor; only MR on default\-low RELEASE\. Local47k RESET pullup/1M bleed into U17; CT open12–28ms release delay; no shared RESET wired\-OR\.
- LCSC Part Number: C130062
- Datasheet URL: https://www\.ti\.com/lit/ds/symlink/tps3808\-q1\.pdf
- Part Type: Monitors & Reset Circuits
- Product Info Url: https://lcsc\.com/product\-detail/PMIC\-Supervisors\_TI\_TPS3808G01QDBVRQ1\_TPS3808G01QDBVRQ1\_C130062\.html

**Pins:**
- \~\{MR\} [pin 3]
- \~\{RESET\} [pin 1]
- CT [pin 4]
- GND [pin 2]
- SENSE [pin 5]
- VDD [pin 6]

### U6 — [SN74LVC1T45DBVT](https://flux.ai/lcsc/sn74lvc1t45dbvt~aonb.md)

- Functional Group: IO U1 Shutdown Contact
- Package or Case Code: SOT\-23\-6\_L2\.9\-W1\.6\-P0\.95\-LS2\.8\-BR
- Role Details: A=3V3 RELAY\_PULSE; B=5V\-domain pump input; DIR=3V3 selects A\-to\-B\. Manufacturer Ioff and either\-rail\-zero high\-Z; output pulldown R23\. No firmware\-dependent injection protection\.
- Manufacturer Name: TI\(德州仪器\)
- Product Info Url: https://lcsc\.com/product\-detail/Others\_Texas\-Instruments\_SN74LVC1T45DBVT\_Texas\-Instruments\-TI\-SN74LVC1T45DBVT\_C116653\.html
- Role: Isolation
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010301\_Texas\-Instruments\-SN74LVC1T45DBVT\_C116653\.pdf
- Manufacturer Part Number: SN74LVC1T45DBVT
- LCSC Part Number: C116653
- JLCPCB Part Class: Extended Part
- Part Type: 74 Series

**Pins:**
- A [pin 3]
- B [pin 4]
- DIR [pin 5]
- GND [pin 2]
- VCCA [pin 1]
- VCCB [pin 6]

### U7 — [LT1763CS8\-3\.3\#PBF](https://flux.ai/lcsc/lt1763cs8-3p3pbf~0wpb.md)

- Role Details: LT1763reverseprotection withINgrounded andOUTretained;3\.220–3\.380V fullrange reference,150mAcarrierbudget;notUSBisolation\.
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/1763fh\.pdf
- Manufacturer Name: ADI\(亚德诺\)
- Role: Power Conversion
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C107750
- Package or Case Code: SOP\-8\_L4\.9\-W3\.9\-P1\.27\-LS6\.0\-BL
- Part Type: Linear Voltage Regulators \(LDO\)
- Functional Group: POWER U7 Carrier 3V3
- Product Info Url: https://lcsc\.com/product\-detail/Low\-Dropout\-Regulators\-LDO\_LINEAR\_LT1763CS8\-3\-3\-PBF\_LT1763CS8\-3\-3\-PBF\_C107750\.html
- Manufacturer Part Number: LT1763CS8\-3\.3\#PBF

**Pins:**
- \~\{SHDN\} [pin 5]
- BYP [pin 4]
- GND [pin 7]
- GND [pin 3]
- GND [pin 6]
- IN [pin 8]
- OUT [pin 1]
- SENSE/ADJ [pin 2]

### U8 — [LT1763CS8\-5\#PBF](https://flux.ai/lcsc/lt1763cs8-5pbf~na15.md)

- Package or Case Code: SO\-8\_L4\.9\-W3\.9\-P1\.27\-LS5\.9\-BL
- LCSC Part Number: C117275
- JLCPCB Part Class: Extended Part
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Analog\-Devices\-LT1763CS8\-5\-PBF\_C117275\.pdf
- Manufacturer Part Number: LT1763CS8\-5\#PBF
- Role Details: LT1763\-5 reverseprotected;7Vinput,150mAreserve,4\.875–5\.125V accuracy;10nFBYPtoOUT requiresCeff\>=6\.8uF\.
- Role: Power Conversion
- Manufacturer Name: ADI\(亚德诺\)
- Part Type: Linear Voltage Regulators \(LDO\)
- Functional Group: POWER U8 Clean 5VA
- Product Info Url: https://lcsc\.com/product\-detail/Low\-Dropout\-Regulators\-LDO\_LINEAR\_LT1763CS8\-5\-PBF\_LT1763CS8\-5\-PBF\_C117275\.html

**Pins:**
- \~\{SHDN\} [pin 5]
- BYP [pin 4]
- GND [pin 3]
- GND [pin 7]
- GND [pin 6]
- IN [pin 8]
- OUT [pin 1]
- SENSE [pin 2]

### U9 — [LT1763CS8\-3\.3\#PBF](https://flux.ai/lcsc/lt1763cs8-3p3pbf~0wpb.md)

- Role: Power Conversion
- Datasheet URL: https://www\.analog\.com/media/en/technical\-documentation/data\-sheets/1763fh\.pdf
- Manufacturer Name: ADI\(亚德诺\)
- Role Details: LT1763\-3\.3 reverseprotected;7Vinput,100mAreserve;10nFBYPtoOUT requiresCeff\>=6\.8uF\.
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C107750
- Package or Case Code: SOP\-8\_L4\.9\-W3\.9\-P1\.27\-LS6\.0\-BL
- Functional Group: POWER U9 Clean 3V3A
- Part Type: Linear Voltage Regulators \(LDO\)
- Product Info Url: https://lcsc\.com/product\-detail/Low\-Dropout\-Regulators\-LDO\_LINEAR\_LT1763CS8\-3\-3\-PBF\_LT1763CS8\-3\-3\-PBF\_C107750\.html
- Manufacturer Part Number: LT1763CS8\-3\.3\#PBF

**Pins:**
- \~\{SHDN\} [pin 5]
- BYP [pin 4]
- GND [pin 7]
- GND [pin 3]
- GND [pin 6]
- IN [pin 8]
- OUT [pin 1]
- SENSE/ADJ [pin 2]

### X1 — [236\-102](https://flux.ai/cherepanyadima/236-102~pe.md)

- Datasheet URL: https://wago\.priintcloud\.com/datasheets/236\-102/en/
- Symbol Style: Parametric
- Manufacturer Name: https://wago\.priintcloud\.com/datasheets/236\-102/en/
- Role Details: Internal floating2\-wire harness to rear J7 Amphenol031\-10 insulated BNC:1→center terminal8;2→shell FLOAT\_VIBRUNNER\_DIGITAL\_GROUND\. Neither conductor to localGND/CHASSIS; insulating panel stack/continuity acceptance required\.
- Role: Isolation
- Part Type: Connector
- Manufacturer Part Number: 236\-102
- Functional Group: IO X1 Floating Output

**Pins:**
- 1 [pin L1]
- 2 [pin L2]

### X2 — [236\-102](https://flux.ai/cherepanyadima/236-102~pe.md)

- Datasheet URL: https://wago\.priintcloud\.com/datasheets/236\-102/en/
- Symbol Style: Parametric
- Manufacturer Name: https://wago\.priintcloud\.com/datasheets/236\-102/en/
- Functional Group: IO X2 DC Harness
- Part Type: Connector
- Manufacturer Part Number: 236\-102
- Role: Coupling
- Role Details: Internal WAGO harness from rear J8 SwitchcraftL712A:1center positive9–24V→F1;2sleeve localGND\. Matching761K center\-positive plug selected\. X2 NOT inlet\. Insulate J8 metal bushing from CHASSIS; lug continuity qualification required\.

**Pins:**
- 1 [pin L1]
- 2 [pin L2]

### X3 — [236\-102](https://flux.ai/cherepanyadima/236-102~pe.md)

- Datasheet URL: https://wago\.priintcloud\.com/datasheets/236\-102/en/
- Symbol Style: Parametric
- Manufacturer Name: https://wago\.priintcloud\.com/datasheets/236\-102/en/
- Role Details: Internal sensor harness1IEPE\_ENTRY2localGND to FRONT J1 Amphenol031\-10 insulated BNC; J1In center solder cup/J1Ext shell ground tab\. R127/R128 DNP future rework links not functional TEDS\.
- Role: Sensor Harness
- Part Type: Connector
- Functional Group: IO X3 Sensor Entry
- Manufacturer Part Number: 236\-102

**Pins:**
- 1 [pin L1]
- 2 [pin L2]

### Y1 — [SG\-8018CG 13\.107200 MHZ TJHPA](https://flux.ai/lcsc/sg-8018cg-13p107200-mhz-tjhpa~yuj5.md)

- Exclude from Pick & Place: true
- Role: Timing
- Frequency: 13\.1072MHz
- LCSC Part Number: C1677306
- Functional Group: ANALOG U24 Precision Acquisition
- Manufacturer Name: EPSON\(爱普生\)
- Role Details: Autonomous 3\.3V CMOS clock, OE held HIGH on 3V3A\. Procure SG\-8018CG 13\.107200 MHZ TJHPA from AUTHORIZED distributor pre\-programmed at 13\.107200MHz; hand\-fit or consigned assembly\. No stock/order/quote claimed; do not substitute frequency\.
- Manufacturer Part Number: SG\-8018CG 13\.107200 MHZ TJHPA
- Allow Substitutes: No
- Package or Case Code: OSC\-SMD\_4P\-L2\.5\-W2\.0\-BL\_CTS\_CA25
- Datasheet URL: https://download\.epsondevice\.com/td/pdf/brief/SG\-8018CG\_en\.pdf

**Pins:**
- GND [pin 2]
- OE [pin 1]
- OUT [pin 3]
- VCC [pin 4]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/xjac0bmichaelx/vibmonitor\-easy\~7e](https://flux.ai/xjac0bmichaelx/vibmonitor-easy~7e).*

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*Generated from [https://flux\.ai/xjac0bmichaelx/vibmonitor\-easy\~7e](https://flux.ai/xjac0bmichaelx/vibmonitor-easy~7e)*