# Single\-Tube RT\-LAMP Reader

## Description

Research\-use\-only standalone colorimetric RT\-LAMP reader for one 0\.2 mL PCR tube, with controlled isothermal heating, optical color measurement, OLED/rotary UI, external low\-voltage power, and a transparent learning enclosure\.

## Project Details

- **Owner:** greg
- **Created:** 9/17/2026
- **Last Updated:** 9/17/2026
- **Visibility:** Public

## Key Components

### D1 — [STPS5L25B\-TR](https://flux.ai/adrian95/stps5l25b-tr~eso.md)

- Manufacturer Name: STMicroelectronics
- Role: Reverse Polarity Protection
- Role Details: 5A low\-drop Schottky in protected 12V path; expected system peak about 2A
- Datasheet URL: https://www\.st\.com/resource/en/datasheet/stps5l25\.pdf
- Diode Type: Rectifier
- Part Type: Diode
- Manufacturer Part Number: STPS5L25B\-TR
- Functional Group: Protected 12V Input and 5V Supply

**Pins:**
- A [pin 3]
- K [pin 2]
- NC [pin 1]

### D2 — [SMBJ18A\-13\-F](https://flux.ai/lcsc/smbj18a-13-f~uiys.md)

- Part Type: TVS
- Product Info Url: https://lcsc\.com/product\-detail/TVS\_DIODES\_SMBJ18A\-13\-F\_SMBJ18A\-13\-F\_C135055\.html
- LCSC Part Number: C135055
- Role: Input Transient Protection
- Package or Case Code: SMB\_L4\.6\-W3\.6\-LS5\.3\-RD
- Functional Group: Protected 12V Input and 5V Supply
- Role Details: 18V standoff TVS on protected 12V rail; fixture transient suitability to validate
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Diodes\-Incorporated\-SMBJ18A\-13\-F\_C135055\.pdf
- Manufacturer Part Number: SMBJ18A\-13\-F
- JLCPCB Part Class: Extended Part
- Manufacturer Name: DIODES\(美台\)

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

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

- Manufacturer Name: Slkor\(SLKORMICRO Elec\.\)
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1912111437\_Slkor\-SLKORMICRO\-Elec\-\-SS14\_C444721\.pdf
- Part Type: Diode
- Role Details: Schottky isolates external 5V supply from Pico USB VBUS path
- Role: VSYS Power OR
- Manufacturer Part Number: SS14
- Functional Group: MCU and USB
- License: https://creativecommons\.org/licenses/by/4\.0/

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

### D4 — [SMBJ18A\-13\-F](https://flux.ai/lcsc/smbj18a-13-f~uiys.md)

- Part Type: TVS
- Product Info Url: https://lcsc\.com/product\-detail/TVS\_DIODES\_SMBJ18A\-13\-F\_SMBJ18A\-13\-F\_C135055\.html
- LCSC Part Number: C135055
- Package or Case Code: SMB\_L4\.6\-W3\.6\-LS5\.3\-RD
- Role Details: 18V standoff drain\-to\-ground clamp for heater cable inductive transients; validate with actual harness
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Diodes\-Incorporated\-SMBJ18A\-13\-F\_C135055\.pdf
- Manufacturer Part Number: SMBJ18A\-13\-F
- Role: Clamping
- Functional Group: Heater Drive and Hardware Interlock
- JLCPCB Part Class: Extended Part
- Manufacturer Name: DIODES\(美台\)

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

### F1 — [02153\.15MXEP](https://flux.ai/lcsc/02153p15mxep~l84d.md)

- Manufacturer Name: Littelfuse\(美国力特\)
- Functional Group: Protected 12V Input and 5V Supply
- Package or Case Code: FUSE\-TH\_BD5\.5\-L21\.5\-P25\.50\-D0\.7
- Role Details: Littelfuse 02153\.15MXEP, 3\.15A time\-lag, 250V; qualify continuous\-current derating, ambient/board temperature rise, lead heating, and nuisance opening at maximum measured system current
- Manufacturer Part Number: 02153\.15MXEP
- LCSC Part Number: C142791
- Role: Protection
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Littelfuse\-02153\-15MXEP\_C142791\.pdf
- Part Type: Cartridge Fuses
- Product Info Url: https://lcsc\.com/product\-detail/Glass\-Fuses\_Littelfuse\_02153\-15MXEP\_3\-15A\-250V\_C142791\.html
- JLCPCB Part Class: Extended Part

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

### J1 — [KF128\-5\.08\-2P\-AA](https://flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md)

- Connector Pitch: 5\.08mm
- JLCPCB Part Class: Extended Part
- Functional Group: Protected 12V Input and 5V Supply
- Connector Type: Screw terminal
- Manufacturer Name: KEFA\(科发\)
- LCSC Part Number: C474952
- Manufacturer Part Number: KF128\-5\.08\-2P\-AA
- Operating Temperature: \-40℃\~\+105℃
- Role: Protection
- Connector Gender: Female
- Connector Rows: 1
- Package or Case Code: CONN\-TH\_P5\.08\_KF128\-5\.08\-2P
- Current Rating: 24A
- Connector Positions: 2
- Product Info Url: https://lcsc\.com/product\-detail/New\-Quadratic\-Unclassified\-Data\_Cixi\-Kefa\-Elec\-KF128\-5\-08\-2P\_C474952\.html
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2408211511\_Cixi\-Kefa\-Elec\-KF128\-5\-08\-2P\-AA\_C474952\.pdf
- Part Type: Screw terminal
- Role Details: 12V adapter input, 3A source; verify terminal block temperature rise at 2A

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

### J10 — [B4B\-XH\-A](https://flux.ai/vasyl/b4b-xh-a~rni.md)

- Role Details: SWCLK,GND,SWDIO and 3V3 reference debug connector
- Datasheet URL: https://www\.snapeda\.com/parts/B4B\-XH\-A\(LF\)\(SN\)/JST%20Sales/datasheet/
- Manufacturer Name: JST
- Manufacturer Part Number: B4B\-XH\-A
- Part Type: Connector
- Functional Group: MCU and USB
- Role: Sensing \(Shunt\)

**Pins:**
- 1
- 2
- 3
- 4

### J2 — [KF128\-5\.08\-2P\-AA](https://flux.ai/lcsc/kf128-5p08-2p-aa~0pbi.md)

- Connector Pitch: 5\.08mm
- JLCPCB Part Class: Extended Part
- Connector Type: Screw terminal
- Manufacturer Name: KEFA\(科发\)
- LCSC Part Number: C474952
- Manufacturer Part Number: KF128\-5\.08\-2P\-AA
- Operating Temperature: \-40℃\~\+105℃
- Connector Gender: Female
- Connector Rows: 1
- Package or Case Code: CONN\-TH\_P5\.08\_KF128\-5\.08\-2P
- Current Rating: 24A
- Functional Group: Heater Drive and Hardware Interlock
- Connector Positions: 2
- Product Info Url: https://lcsc\.com/product\-detail/New\-Quadratic\-Unclassified\-Data\_Cixi\-Kefa\-Elec\-KF128\-5\-08\-2P\_C474952\.html
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2408211511\_Cixi\-Kefa\-Elec\-KF128\-5\-08\-2P\-AA\_C474952\.pdf
- Part Type: Screw terminal
- Role: Switching
- Role Details: Off\-board heater connector, nominal 12V 18\-20W

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

### J3 — [B2B\-XH\-A\(LF\)\(SN\)](https://flux.ai/lcsc/b2b-xh-alfsn~xrt.md)

- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/XH\-Connectors\_JST\_B2B\-XH\-A\-LF\-SN\_XHsocket\-1\-2P\-pitch2\-5mm\_C158012\.html
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-B2B\-XH\-A\-LF\-SN\_C158012\.pdf
- Package or Case Code: CONN\-TH\_B2B\-XH\-A\-LF\-SN
- Pitch: 2\.5mm
- Part Type: Wire To Board / Wire To Wire Connector
- Role: Protection
- Manufacturer Name: JST
- Gender: Male
- Connector Type: Wire To Board / Wire To Wire Connector
- Functional Group: Heater Drive and Hardware Interlock
- Role Details: Physical series loop for Therm\-O\-Disc G4A00091C one\-shot cutoff; sourcing/mounting qualification open
- Manufacturer Part Number: B2B\-XH\-A\(LF\)\(SN\)
- Rows: 1
- Positions: 2
- LCSC Part Number: C158012

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

### J4 — [B2B\-XH\-A\(LF\)\(SN\)](https://flux.ai/lcsc/b2b-xh-alfsn~xrt.md)

- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/XH\-Connectors\_JST\_B2B\-XH\-A\-LF\-SN\_XHsocket\-1\-2P\-pitch2\-5mm\_C158012\.html
- Role Details: Normally\-closed lid/guard switch loop; open state removes gate drive
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-B2B\-XH\-A\-LF\-SN\_C158012\.pdf
- Package or Case Code: CONN\-TH\_B2B\-XH\-A\-LF\-SN
- Pitch: 2\.5mm
- Part Type: Wire To Board / Wire To Wire Connector
- Manufacturer Name: JST
- Gender: Male
- Connector Type: Wire To Board / Wire To Wire Connector
- Role: Protection
- Manufacturer Part Number: B2B\-XH\-A\(LF\)\(SN\)
- Functional Group: Heater Drive and Hardware Interlock
- Rows: 1
- Positions: 2
- LCSC Part Number: C158012

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

### J5 — [B2B\-XH\-A\(LF\)\(SN\)](https://flux.ai/lcsc/b2b-xh-alfsn~xrt.md)

- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/XH\-Connectors\_JST\_B2B\-XH\-A\-LF\-SN\_XHsocket\-1\-2P\-pitch2\-5mm\_C158012\.html
- Role: Sensing \(Shunt\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-B2B\-XH\-A\-LF\-SN\_C158012\.pdf
- Package or Case Code: CONN\-TH\_B2B\-XH\-A\-LF\-SN
- Pitch: 2\.5mm
- Part Type: Wire To Board / Wire To Wire Connector
- Role Details: External 10k NTC block thermistor connector
- Functional Group: Block Thermistor ADC
- Manufacturer Name: JST
- Gender: Male
- Connector Type: Wire To Board / Wire To Wire Connector
- Manufacturer Part Number: B2B\-XH\-A\(LF\)\(SN\)
- Rows: 1
- Positions: 2
- LCSC Part Number: C158012

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

### J6 — [B2B\-XH\-A\(LF\)\(SN\)](https://flux.ai/lcsc/b2b-xh-alfsn~xrt.md)

- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/XH\-Connectors\_JST\_B2B\-XH\-A\-LF\-SN\_XHsocket\-1\-2P\-pitch2\-5mm\_C158012\.html
- Role Details: Fine\-wire K\-type thermocouple connector; polarity labeled TC\+ and TC\-
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_JST\-B2B\-XH\-A\-LF\-SN\_C158012\.pdf
- Package or Case Code: CONN\-TH\_B2B\-XH\-A\-LF\-SN
- Pitch: 2\.5mm
- Part Type: Wire To Board / Wire To Wire Connector
- Manufacturer Name: JST
- Gender: Male
- Connector Type: Wire To Board / Wire To Wire Connector
- Role: Sensing \(Shunt\)
- Manufacturer Part Number: B2B\-XH\-A\(LF\)\(SN\)
- Rows: 1
- Positions: 2
- LCSC Part Number: C158012
- Functional Group: Liquid Reference Thermocouple

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

### J7 — [B5B\-XH\-A\(LF\)\(SN\)](https://flux.ai/adrian95/b5b-xh-alfsn~zvt.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Manufacturer Part Number: B5B\-XH\-A\(LF\)\(SN\)
- Part Type: Connector
- Role: Sensing \(Shunt\)
- Manufacturer Name: JST Sales America Inc\.
- Role Details: Provisional optical sensor breakout: 3V3,GND,SDA,SCL,INT; module voltage/pinout must be confirmed
- Symbol Style: parametric\-v1
- Functional Group: Provisional Optical Head

**Pins:**
- Pin\_1 [pin 1]
- Pin\_2 [pin 2]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]

### J8 — [B6B\-XH\-A\(LF\)\(SN\)](https://flux.ai/adrian95/b6b-xh-alfsn~to0.md)

- Role Details: Optical illumination fixture: 5V, white/red/green/blue low\-side returns, ground
- Part Type: Connector
- Role: Switching
- Manufacturer Name: JST Sales America Inc\.
- Symbol Style: parametric\-v1
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: https://www\.phoenixcontact\.com/en\-us/products/pcb\-header\-mstba\-25\-3\-g\-508\-1757255?type=pdf
- Manufacturer Part Number: B6B\-XH\-A\(LF\)\(SN\)
- Functional Group: Provisional Optical Head

**Pins:**
- Pin\_1 [pin 1]
- Pin\_2 [pin 2]
- Pin\_3 [pin 3]
- Pin\_4 [pin 4]
- Pin\_5 [pin 5]
- Pin\_6 [pin 6]

### J9 — [B4B\-XH\-A](https://flux.ai/vasyl/b4b-xh-a~rni.md)

- Datasheet URL: https://www\.snapeda\.com/parts/B4B\-XH\-A\(LF\)\(SN\)/JST%20Sales/datasheet/
- Manufacturer Name: JST
- Role Details: 3V3 I2C expansion/test connector
- Manufacturer Part Number: B4B\-XH\-A
- Functional Group: MCU and USB
- Part Type: Connector
- Role: Sensing \(Shunt\)

**Pins:**
- 1
- 2
- 3
- 4

### LED1 — [150060VS75000](https://flux.ai/silicon-yard/150060vs75000.md)

- Role Details: Visible firmware status indicator
- Functional Group: MCU and USB
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/4785c458b2c53f281c6149dd11617420e108d5d9a5c642541811a66a30135e21\.pdf
- Package or Case Code: R0603
- Role: Current Limiting
- Part Type: LED
- Manufacturer Part Number: 150060VS75000
- Manufacturer Name: Würth Elektronik

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

### PS1 — [TSR 1\-2450](https://flux.ai/vasyl/tsr-1-2450~6z.md)

- Manufacturer Part Number: TSR 1\-2450
- Role Details: 12V\-to\-5V 1A robust SIP module; logic peak budget below 0\.5A
- Manufacturer Name: Traco Power
- Datasheet URL: https://www\.tracopower\.com/sites/default/files/products/datasheets/tsr1\_datasheet\.pdf
- Functional Group: Protected 12V Input and 5V Supply
- Role: DC\-DC Conversion
- Part Type: DC DC Converters

**Pins:**
- GND [pin 2]
- Vin [pin 1]
- Vout [pin 3]

### Q1 — [IRLZ44NPBF](https://flux.ai/jecstronic/irlz44npbf~kg9.md)

- Role: Heater Switch
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Heater Drive and Hardware Interlock
- Part Type: Transistor
- Manufacturer Name: Infineon Technologies
- Manufacturer Part Number: IRLZ44NPBF
- Datasheet URL: https://www\.mouser\.com/datasheet/2/196/Infineon\_IRLZ44N\_DataSheet\_v01\_01\_EN\-3363447\.pdf
- Role Details: 55V logic\-level TO\-220 MOSFET; RDS\(on\) guaranteed at 5V; 2A load margin

**Pins:**
- D [pin 2]
- G [pin 1]
- S [pin 3]

### Q2 — [2N7002H6327XTSA2](https://flux.ai/jecstronic/2n7002h6327xtsa2~wyr.md)

- Manufacturer Name: Infineon Technologies
- Part Type: Transistor
- Datasheet URL: https://www\.mouser\.com/datasheet/2/196/Infineon\_2N7002\_DS\_v02\_04\_en\-1225920\.pdf
- Manufacturer Part Number: 2N7002H6327XTSA2
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Provisional Optical Head
- Role: Switching
- Role Details: White illumination low\-side switch

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### Q3 — [2N7002H6327XTSA2](https://flux.ai/jecstronic/2n7002h6327xtsa2~wyr.md)

- Manufacturer Name: Infineon Technologies
- Part Type: Transistor
- Datasheet URL: https://www\.mouser\.com/datasheet/2/196/Infineon\_2N7002\_DS\_v02\_04\_en\-1225920\.pdf
- Manufacturer Part Number: 2N7002H6327XTSA2
- Functional Group: Provisional Optical Head
- Role Details: Red illumination low\-side switch
- Role: Switching
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### Q4 — [2N7002H6327XTSA2](https://flux.ai/jecstronic/2n7002h6327xtsa2~wyr.md)

- Manufacturer Name: Infineon Technologies
- Part Type: Transistor
- Datasheet URL: https://www\.mouser\.com/datasheet/2/196/Infineon\_2N7002\_DS\_v02\_04\_en\-1225920\.pdf
- Functional Group: Provisional Optical Head
- Manufacturer Part Number: 2N7002H6327XTSA2
- Role: Switching
- Role Details: Green illumination low\-side switch
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### Q5 — [2N7002H6327XTSA2](https://flux.ai/jecstronic/2n7002h6327xtsa2~wyr.md)

- Manufacturer Name: Infineon Technologies
- Role Details: Blue illumination low\-side switch
- Part Type: Transistor
- Datasheet URL: https://www\.mouser\.com/datasheet/2/196/Infineon\_2N7002\_DS\_v02\_04\_en\-1225920\.pdf
- Functional Group: Provisional Optical Head
- Role: Switching
- Manufacturer Part Number: 2N7002H6327XTSA2
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### SW1 — [PTS645SL43SMTR92 LFS](https://flux.ai/adrian95/pts645sl43smtr92-lfs~0ce.md)

- Package or Case Code: PTS645 Series 6x6 mm SMT Gull Wing
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Switch
- Role: Switching
- Functional Group: MCU and USB
- Manufacturer Name: C&K
- Max Current: 0\.05A
- Operating Temperature: \-40°C to \+85°C
- Datasheet URL: https://www\.ckswitches\.com/media/1471/pts645\.pdf
- Role Details: Manual Pico RUN reset access
- Manufacturer Part Number: PTS645SL43SMTR92 LFS

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

### TP1 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Role: Sensing \(Shunt\)
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Test Points
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)
- Role Details: 12V protected rail probe point

**Pins:**
- Pin\_1 [pin 1]

### TP10 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Role Details: Optical/I2C SCL probe point
- Role: Sensing \(Shunt\)
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Functional Group: Test Points
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)

**Pins:**
- Pin\_1 [pin 1]

### TP2 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Functional Group: Test Points
- Role: Sensing \(Shunt\)
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: 5V logic rail probe point
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)

**Pins:**
- Pin\_1 [pin 1]

### TP3 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Functional Group: Test Points
- Manufacturer Name: JST Sales America Inc\.
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Part Type: Connector
- Role: Sensing \(Shunt\)
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)
- Role Details: 3\.3V rail probe point

**Pins:**
- Pin\_1 [pin 1]

### TP4 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Role: Sensing \(Shunt\)
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Role Details: Ground probe point
- Part Type: Connector
- Functional Group: Test Points
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)

**Pins:**
- Pin\_1 [pin 1]

### TP5 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Functional Group: Test Points
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)
- Role: Sensing \(Shunt\)
- Role Details: Firmware heater PWM command probe point

**Pins:**
- Pin\_1 [pin 1]

### TP6 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Functional Group: Test Points
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)
- Role: Sensing \(Shunt\)
- Role Details: Power MOSFET gate probe point

**Pins:**
- Pin\_1 [pin 1]

### TP7 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Role: Sensing \(Shunt\)
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)
- Role Details: Filtered thermistor ADC input probe point
- Functional Group: Test Points

**Pins:**
- Pin\_1 [pin 1]

### TP8 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Manufacturer Name: JST Sales America Inc\.
- Functional Group: Test Points
- Role: Sensing \(Shunt\)
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Part Type: Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)
- Role Details: Divided interlock monitor probe point

**Pins:**
- Pin\_1 [pin 1]

### TP9 — [B1B\-XH\-AM\(LF\)\(SN\)\(P\)](https://flux.ai/adrian95/b1b-xh-amlfsnp~xzs.md)

- Role Details: Optical/I2C SDA probe point
- Manufacturer Name: JST Sales America Inc\.
- Datasheet URL: https://www\.jst\-mfg\.com/product/pdf/eng/eXH\.pdf
- Part Type: Connector
- Functional Group: Test Points
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: B1B\-XH\-AM\(LF\)\(SN\)\(P\)
- Role: Sensing \(Shunt\)

**Pins:**
- Pin\_1 [pin 1]

### U1 — [SC0915](https://flux.ai/jecstronic/sc0915~uj.md)

- Role Details: USB\-capable RP2040 module for logging, control, and acquisition
- Manufacturer Name: Raspberry Pi
- Role: Controller Module
- Manufacturer Part Number: SC0915
- Part Type: Evaluation Boards
- Datasheet URL: https://datasheets\.raspberrypi\.com/pico/pico\-datasheet\.pdf
- Functional Group: MCU and USB

**Pins:**
- \~RUN [pin 30]
- 3V3\_EN [pin 37]
- 3V3\_OUT [pin 36]
- ADC\_VREF [pin 35]
- AGND [pin 33]
- GND [pin 13]
- GND [pin D2]
- GND [pin 23]
- GND [pin 28]
- GND [pin 18]
- GND [pin 3]
- GND [pin 38]
- GND [pin 8]
- GP0 [pin 1]
- GP1 [pin 2]
- GP10 [pin 14]
- GP11 [pin 15]
- GP12 [pin 16]
- GP13 [pin 17]
- GP14 [pin 19]
- GP15 [pin 20]
- GP16 [pin 21]
- GP17 [pin 22]
- GP18 [pin 24]
- GP19 [pin 25]
- GP2 [pin 4]
- GP20 [pin 26]
- GP21 [pin 27]
- GP22 [pin 29]
- GP26 [pin 31]
- GP27 [pin 32]
- GP28 [pin 34]
- GP3 [pin 5]
- GP4 [pin 6]
- GP5 [pin 7]
- GP6 [pin 9]
- GP7 [pin 10]
- GP8 [pin 11]
- GP9 [pin 12]
- SWCLK [pin D1]
- SWDIO [pin D3]
- TP1\_GND [pin TP1]
- TP2\_USB\_DM [pin TP2]
- TP3\_USB\_DP [pin TP3]
- TP4\_GPIO23/SMPS\_PS [pin TP4]
- TP5\_GPIO25/LED [pin TP5]
- TP6\_BOOTSEL [pin TP6]
- USB\_SHIELD [pin A]
- USB\_SHIELD [pin B]
- USB\_SHIELD [pin D]
- USB\_SHIELD [pin C]
- VBUS [pin 40]
- VSYS [pin 39]

### U2 — [ADS1115IDGSR](https://flux.ai/adrian95/ads1115idgsr~3y9.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Name: Texas Instruments
- Manufacturer Part Number: ADS1115IDGSR
- Role Details: 16\-bit I2C ADC for block thermistor divider
- Part Type: Integrated Circuit
- Datasheet URL: https://www\.ti\.com/general/docs/suppproductinfo\.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww\.ti\.com%2Flit%2Fgpn%2Fads1113
- Functional Group: Block Thermistor ADC
- Role: Precision ADC

**Pins:**
- ADDR [pin 1]
- AIN0 [pin 4]
- AIN1 [pin 5]
- AIN2 [pin 6]
- AIN3 [pin 7]
- ALERT/RDY [pin 2]
- GND [pin 3]
- SCL [pin 10]
- SDA [pin 9]
- VDD [pin 8]

### U3 — [MAX31856MUD\+](https://flux.ai/lcsc/max31856mudplus~rt0a.md)

- Part Type: Sensor Interface ICs
- Role: Thermocouple Converter
- JLCPCB Part Class: Extended Part
- Manufacturer Name: ADI\(亚德诺\)/MAXIM\(美信\)
- Datasheet URL: https://www\.lcsc\.com/datasheet/lcsc\_datasheet\_2304140030\_Analog\-Devices\-Inc\-\-Maxim\-Integrated\-MAX31856MUD\-\_C116632\.pdf
- Manufacturer Part Number: MAX31856MUD\+
- Package or Case Code: TSSOP\-14\_L5\.0\-W4\.4\-P0\.65\-LS6\.4\-BL
- Functional Group: Liquid Reference Thermocouple
- LCSC Part Number: C116632
- Product Info Url: https://lcsc\.com/product\-detail/\_Maxim\-Integrated\_MAX31856MUD\_Maxim\-Integrated\-MAX31856MUD\_C116632\.html
- Role Details: Independent liquid\-reference K\-type interface; BIAS on connector\-side TC\_MINUS before R27, T\- and C9/C11 on filtered TC\_MINUS\_FILT

**Pins:**
- \~\{CS\} [pin 9]
- \~\{DRDY\} [pin 7]
- \~\{FAULT\} [pin 13]
- AGND [pin 1]
- AVDD [pin 5]
- BIAS [pin 2]
- DGND [pin 14]
- DNC [pin 6]
- DVDD [pin 8]
- SCK [pin 10]
- SDI [pin 12]
- SDO [pin 11]
- T\- [pin 3]
- T\+ [pin 4]

### U4 — [SN74AHCT1G08DBVR](https://flux.ai/lcsc/sn74ahct1g08dbvr~9amj.md)

- Manufacturer Part Number: SN74AHCT1G08DBVR
- JLCPCB Part Class: Extended Part
- Role: Hardware Interlock Logic
- Product Info Url: https://lcsc\.com/product\-detail/74\-Series\_TI\_SN74AHCT1G08DBVR\_SN74AHCT1G08DBVR\_C113521\.html
- Part Type: Gates
- Manufacturer Name: TI\(德州仪器\)
- Functional Group: Heater Drive and Hardware Interlock
- Datasheet URL: https://lcsc\.com/product\-detail/74\-Series\_TI\_SN74AHCT1G08DBVR\_SN74AHCT1G08DBVR\_C113521\.html
- Package or Case Code: SOT\-23\-5\_L3\.0\-W1\.7\-P0\.95\-LS2\.8\-BR
- LCSC Part Number: C113521
- Role Details: 5V AHCT AND gate combines 3\.3V PWM with normally\-safe interlock state

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

### U5 — [TC4420EPA](https://flux.ai/lcsc/tc4420epa~ru2c.md)

- Manufacturer Name: MICROCHIP\(美国微芯\)
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2410010204\_Microchip\-Tech\-TC4420EPA\_C640742\.pdf
- Role: Switching
- Manufacturer Part Number: TC4420EPA
- LCSC Part Number: C640742
- Role Details: 5V non\-inverting MOSFET gate driver with 3\.3V\-compatible input threshold
- Functional Group: Heater Drive and Hardware Interlock
- Part Type: Gate Drive ICs
- JLCPCB Part Class: Extended Part
- Product Info Url: https://lcsc\.com/product\-detail/Pre\-ordered\-Products\_Microchip\-Tech\_TC4420EPA\_Microchip\-Tech\-TC4420EPA\_C640742\.html
- Package or Case Code: PDIP\-8\_L9\.3\-W6\.4\-P2\.54\-LS7\.6\-BL

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

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/greg/single\-tube\-rt\-lamp\-reader\~efm](https://flux.ai/greg/single-tube-rt-lamp-reader~efm).*

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*Generated from [https://flux\.ai/greg/single\-tube\-rt\-lamp\-reader\~efm](https://flux.ai/greg/single-tube-rt-lamp-reader~efm)*