# Brainstorm a new project with AI [Example] ## Description Compact 4-Layer Raspberry Pi 5 Sensor Hub with Teensy 4.1, 36-Channel FSR Network, SPI Encoders, and Qwiic IMU ## Project Details - **Owner:** bharathmanav - **Created:** 1/13/2026 - **Last Updated:** 1/13/2026 - **Visibility:** Public - **Bus Group: FSR Mux Address:** Control Bus - **ERC Issues:** No outstanding ERC/DRC/system review errors; all current @review items are resolved or accepted at this revision. - **System Architecture:** ```mermaid flowchart TD subgraph PWR_5V [5V Power Entry] PI5V[Pi 5V Header] FUSE[Polyfuse 1.5-2A] TVS[5V TVS Diode] IDEAL[Ideal Diode / Power Path] BULK[5V Bulk + Decoupling Caps] PI5V --> FUSE --> IDEAL --> BULK PI5V --> TVS end subgraph BUCK_3V3 [3V3 Regulation] BUCK[5V to 3V3 Buck Regulator] FB3V3[Ferrite Bead 3V3A] DECAP3V3[3V3A Local Decoupling + Test Points] BULK --> BUCK --> FB3V3 --> DECAP3V3 end subgraph MCU_HOSTS [Host Interfaces] PI_HDR[Raspberry Pi Header] TEENSY_HDR[Teensy 4.1 Header] PI_HDR --- PI5V TEENSY_HDR --- DECAP3V3 end subgraph SPI_ENC [SPI Encoder Network] SPI_CONN[6x JST-GH 6-pin SPI Encoders] SPI_SER[Series Rs SCK/MOSI/CS/MISO] SPI_CS_PU[CS Pullups] SPI_ESD[ESD Arrays] TEENSY_HDR --> SPI_SER --> SPI_CONN SPI_CONN --> SPI_ESD TEENSY_HDR --> SPI_CS_PU end subgraph QWIIC_IMU [Qwiic IMU] QWIIC[Qwiic I2C Connector] I2C_PU[Optional 4k7 Pullups via Jumpers] IMU_GPIO[IMU INT/SYNC GPIO] QWIIC --> I2C_PU TEENSY_HDR --> QWIIC TEENSY_HDR --> IMU_GPIO end subgraph FSR_NET [FSR Network] FSR_DIV[36x FSR Divider Network 3V3A -> FSR -> Sense -> RREF] MUX1[CD74HC4067 #1] MUX2[CD74HC4067 #2] MUX3[CD74HC4067 #3] ADDR[Address Lines S0-S3 from Teensy] OPAMP[3x Quad Op-Amp Buffers] RC_ADC[RC Filters + BAT54S Clamps to ADC] FSR_DIV --> MUX1 FSR_DIV --> MUX2 FSR_DIV --> MUX3 ADDR --> MUX1 ADDR --> MUX2 ADDR --> MUX3 MUX1 --> OPAMP --> RC_ADC --> TEENSY_HDR MUX2 --> OPAMP MUX3 --> OPAMP end subgraph ESD_IO [Connector ESD Protection] EDGE_ESD[ESD Arrays at All Offboard Connectors] end SPI_CONN --> EDGE_ESD QWIIC --> EDGE_ESD FSR_DIV --> EDGE_ESD ``` - **ERC Status:** Initial ERC run requested – please execute ERC and log all current issues from @review; no schematic or layout edits to be made in this step. - **Net Type: 3V3 Digital:** Power - **Net Type: 5V Rail:** Power - **Bus Group: IMU I2C:** I2C Bus - **Power Requirements:** USB - **Manufacturing Quantity Target:** 10 - **ERC Verification:** ERC run via @review at this revision; all reported ERC/DRC/system checks are currently resolved or accepted, no outstanding errors remain. - **Operating Voltage:** 5V - **System Hashtags:** #PowerManagement, #SensorHub, #Teensy4_1, #SPI, #I2C, #FSR - **License:** https://ohwr.org/project/cernohl/wikis/home - **Domain:** Scientific - **Bus Group: Encoder SPI:** SPI Bus - **Connectivity:** USB - **Software:** Arduino - **Net Type: 3V3A Analog:** Analog - **Reliability Target (MTBF):** 30000hours ## Key Components ### CN1 — [SM06B-GHS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm06b-ghs-tblfsn~pzzy.md) - Role: Connector - Product Info Url: https://lcsc.com/product-detail/Connectors_JST_SM06B-GHS-TB-LF-SN_SM06B-GHS-TB-LF-SN_C133065.html - Connector Pitch: 2mm - Manufacturer Part Number: SM06B-GHS-TB(LF)(SN) - Connector Positions: 6 - LCSC Part Number: C133065 - Connector Rows: 1 - Package or Case Code: CONN-TH_SM06B-GHS-TB-LF-SN - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM06B-GHS-TB-LF-SN_C133065.pdf - Role Details: SPI encoder connector - Part Type: Wire To Board / Wire To Wire Connector - Manufacturer Name: JST - Connector Gender: Female - Connector Type: Wire-to-Board - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] ### CN2 — [SM06B-GHS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm06b-ghs-tblfsn~pzzy.md) - Connector Positions: 6 - Connector Rows: 1 - LCSC Part Number: C133065 - Package or Case Code: CONN-TH_SM06B-GHS-TB-LF-SN - Role: Connector - Manufacturer Part Number: SM06B-GHS-TB(LF)(SN) - Product Info Url: https://lcsc.com/product-detail/Connectors_JST_SM06B-GHS-TB-LF-SN_SM06B-GHS-TB-LF-SN_C133065.html - Connector Pitch: 2mm - Connector Type: Wire-to-Board - Manufacturer Name: JST - Connector Gender: Female - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM06B-GHS-TB-LF-SN_C133065.pdf - Part Type: Wire To Board / Wire To Wire Connector - Role Details: SPI encoder connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] ### CN3 — [SM06B-GHS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm06b-ghs-tblfsn~pzzy.md) - JLCPCB Part Class: Extended Part - Role Details: SPI encoder connector - Connector Gender: Female - Manufacturer Name: JST - Role: Connector - Connector Type: Wire-to-Board - Part Type: Wire To Board / Wire To Wire Connector - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM06B-GHS-TB-LF-SN_C133065.pdf - Package or Case Code: CONN-TH_SM06B-GHS-TB-LF-SN - LCSC Part Number: C133065 - Connector Rows: 1 - Connector Positions: 6 - Product Info Url: https://lcsc.com/product-detail/Connectors_JST_SM06B-GHS-TB-LF-SN_SM06B-GHS-TB-LF-SN_C133065.html - Connector Pitch: 2mm - Manufacturer Part Number: SM06B-GHS-TB(LF)(SN) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] ### CN4 — [SM06B-GHS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm06b-ghs-tblfsn~pzzy.md) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM06B-GHS-TB-LF-SN_C133065.pdf - Part Type: Wire To Board / Wire To Wire Connector - Connector Type: Wire-to-Board - Manufacturer Name: JST - Connector Gender: Female - Role Details: SPI encoder connector - JLCPCB Part Class: Extended Part - Role: Connector - Manufacturer Part Number: SM06B-GHS-TB(LF)(SN) - Product Info Url: https://lcsc.com/product-detail/Connectors_JST_SM06B-GHS-TB-LF-SN_SM06B-GHS-TB-LF-SN_C133065.html - Connector Pitch: 2mm - LCSC Part Number: C133065 - Connector Rows: 1 - Connector Positions: 6 - Package or Case Code: CONN-TH_SM06B-GHS-TB-LF-SN **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] ### CN5 — [SM06B-GHS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm06b-ghs-tblfsn~pzzy.md) - Manufacturer Name: JST - Connector Gender: Female - Connector Type: Wire-to-Board - JLCPCB Part Class: Extended Part - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM06B-GHS-TB-LF-SN_C133065.pdf - Part Type: Wire To Board / Wire To Wire Connector - Connector Rows: 1 - LCSC Part Number: C133065 - Connector Positions: 6 - Role: Connector - Package or Case Code: CONN-TH_SM06B-GHS-TB-LF-SN - Role Details: SPI encoder connector - Connector Pitch: 2mm - Product Info Url: https://lcsc.com/product-detail/Connectors_JST_SM06B-GHS-TB-LF-SN_SM06B-GHS-TB-LF-SN_C133065.html - Manufacturer Part Number: SM06B-GHS-TB(LF)(SN) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] ### CN6 — [SM06B-GHS-TB(LF)(SN)](https://www.flux.ai/lcsc/sm06b-ghs-tblfsn~pzzy.md) - Part Type: Wire To Board / Wire To Wire Connector - Role Details: SPI encoder connector - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2304140030_JST-SM06B-GHS-TB-LF-SN_C133065.pdf - JLCPCB Part Class: Extended Part - Connector Type: Wire-to-Board - Manufacturer Name: JST - Connector Gender: Female - Manufacturer Part Number: SM06B-GHS-TB(LF)(SN) - Connector Pitch: 2mm - Product Info Url: https://lcsc.com/product-detail/Connectors_JST_SM06B-GHS-TB-LF-SN_SM06B-GHS-TB-LF-SN_C133065.html - Role: Connector - Package or Case Code: CONN-TH_SM06B-GHS-TB-LF-SN - Connector Rows: 1 - LCSC Part Number: C133065 - Connector Positions: 6 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] ### CN7 — [QWIIC I2C JST Connector](https://www.flux.ai/vasy_skral/qwiic-i2c-jst-connector~d55.md) - Role: Connector - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/JST%20PDFs/SR%20Connector.pdf - Manufacturer Name: JST Sales America Inc. - Role Details: Qwiic I2C interface for IMU - Package: Right Angle 4-pin 1.00mm SMT - Manufacturer Part Number: SM04B-SRSS-TB - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### D1 — [ESD9B5.0ST5G](https://www.flux.ai/kicad-part-library/esd9b5p0st5g~zf3.md) - Datasheet URL: https://www.onsemi.com/pub/Collateral/ESD9B-D.PDF - Part Type: Diode SMD - Role: Clamping - Manufacturer Name: Texas Instruments Inc. - Role Details: Surge protection on 5V entry - Package or Case Code: D_SOD-923 - Manufacturer Part Number: ESD9B5.0ST5G **Pins:** - A1 [pin 1] - A2 [pin 2] ### D2 — [BAT54S-TP](https://www.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 - Package or Case Code: SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR - LCSC Part Number: C194858 - Role: Clamping - 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 - Role Details: Clamp diode for ADC input channel A0 - Manufacturer Part Number: BAT54S-TP - Manufacturer Name: MCC(美微科) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### D3 — [BAT54S-TP](https://www.flux.ai/lcsc/bat54s-tp~uulq.md) - Package or Case Code: SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR - LCSC Part Number: C194858 - Role: Clamping - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302134_MCC-Micro-Commercial-Components-BAT54S-TP_C194858.pdf - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Part Number: BAT54S-TP - JLCPCB Part Class: Extended Part - Product Info Url: https://lcsc.com/product-detail/Schottky-Barrier-Diodes-SBD_Micro-Commercial-Components-MCC-BAT54S-TP_C194858.html - Manufacturer Name: MCC(美微科) - Role Details: Clamp diode for ADC input channel A1 **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### D4 — [BAT54S-TP](https://www.flux.ai/lcsc/bat54s-tp~uulq.md) - Product Info Url: https://lcsc.com/product-detail/Schottky-Barrier-Diodes-SBD_Micro-Commercial-Components-MCC-BAT54S-TP_C194858.html - Role: Clamping - Role Details: Clamp diode for ADC input channel A2 - Manufacturer Part Number: BAT54S-TP - JLCPCB Part Class: Extended Part - Part Type: Schottky Barrier Diodes (SBD) - Package or Case Code: SOT-23-3_L3.0-W1.7-P0.95-LS2.9-BR - LCSC Part Number: C194858 - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302134_MCC-Micro-Commercial-Components-BAT54S-TP_C194858.pdf - Manufacturer Name: MCC(美微科) **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### F1 — [0ZCF0200AF2C](https://www.flux.ai/adrian95/0zcf0200af2c~eal.md) - Role Details: Overcurrent protection for 5V entry - License: https://creativecommons.org/licenses/by/4.0/ - Role: Protection - Manufacturer Part Number: 0ZCF0200AF2C - Part Type: Fuse - Package or Case Code: FUSC7451X80N - Datasheet URL: https://belfuse.com/resources/datasheets/circuitprotection/ds-cp-0zcf-series.pdf - Manufacturer Name: BelFuse **Pins:** - ~ [pin 2] - ~ [pin 1] ### FB1 — [BLM31PG601SN1L](https://www.flux.ai/adrian95/blm31pg601sn1l~0r8.md) - Part Type: Filter - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: BLM31PG601SN1L - Datasheet URL: https://www.murata.com/en-us/products/productdata/8796739698718/ENFA0006.pdf - Role Details: EMI filter on 3V3A rail - Manufacturer Name: Murata Electronics - Role: Choke (EMI Filter) **Pins:** - 1 [pin 1] - 2 [pin 2] ### TP1 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point~b9.md) - Role: Test Point - Role Details: Single-pin test point for power rails **Pins:** - P1 ### TP2 — [1.25mm SMD Test Point](https://www.flux.ai/jharwinbarrozo/1p25mm-smd-test-point~b9.md) - Role Details: Single-pin test point for power rails - Role: Test Point **Pins:** - P1 ### U1 — [LTC4412MPS6#TRPBF](https://www.flux.ai/lcsc/ltc4412mps6trpbf~i53e.md) - JLCPCB Part Class: Extended Part - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL - Role Details: Ideal-diode controller for 5V rail - Role: Reverse Polarity Protection - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2009170904_Analog-Devices-LTC4412MPS6-TRPBF_C688483.pdf - Product Info Url: https://lcsc.com/product-detail/Pre-ordered-Products_Analog-Devices_LTC4412MPS6-TRPBF_Analog-Devices-ADI-LINEAR-LTC4412MPS6-TRPBF_C688483.html - Manufacturer Name: ADI(亚德诺) - LCSC Part Number: C688483 - Manufacturer Part Number: LTC4412MPS6#TRPBF **Pins:** - CTL [pin 3] - GATE [pin 5] - GND [pin 2] - SENSE [pin 6] - STAT [pin 4] - VIN [pin 1] ### U1 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - JLCPCB Part Class: Extended Part - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Manufacturer Part Number: CD74HC4067M - Role Details: 16:1 analog multiplexer for FSR network - Part Type: Analog Switches / Multiplexers - Role: Switching - LCSC Part Number: C1545936 - Manufacturer Name: TI(德州仪器) **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U10 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - LCSC Part Number: C1545936 - Role Details: 16:1 analog multiplexer for FSR network - Manufacturer Name: TI(德州仪器) - Role: Switching - Part Type: Analog Switches / Multiplexers - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Manufacturer Part Number: CD74HC4067M - JLCPCB Part Class: Extended Part **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U10 — [Teensy 4.1](https://www.flux.ai/adrian95/teensy-4p1~xp5.md) - Manufacturer Part Number: DEV-16996 - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/2942/DEV-16996_Web.pdf - Role Details: Main MCU - Role: Microcontroller - Manufacturer Name: SparkFun Electronics - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Development Board **Pins:** - 0_ [pin 2] - 1_ [pin 3] - 10_ [pin 12] - 11_ [pin 13] - 12_ [pin 14] - 13_ [pin 35] - 14_ [pin 36] - 15_ [pin 37] - 16_ [pin 38] - 17_ [pin 39] - 18_ [pin 40] - 19_ [pin 41] - 2_ [pin 4] - 20_ [pin 42] - 21_ [pin 43] - 22_ [pin 44] - 23_ [pin 45] - 24_ [pin 16] - 25_ [pin 17] - 26_ [pin 18] - 27_ [pin 19] - 28_ [pin 20] - 29_ [pin 21] - 3_ [pin 5] - 30_ [pin 22] - 31_ [pin 23] - 32_ [pin 24] - 33_ [pin 25] - 34_ [pin 26] - 35_ [pin 27] - 36_ [pin 28] - 37_ [pin 29] - 38_ [pin 30] - 39_ [pin 31] - 3V [pin 15] - 3V3 [pin 46] - 4_ [pin 6] - 40_ [pin 32] - 41_ [pin 33] - 5_ [pin 7] - 5V [pin 48] - 6_ [pin 8] - 7_ [pin 9] - 8_ [pin 10] - 9_ [pin 11] - G_1 [pin 1] - G_2 [pin 34] - G_3 [pin 47] ### U11 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - Role: Switching - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C1545936 - JLCPCB Part Class: Extended Part - Manufacturer Part Number: CD74HC4067M - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Role Details: 16:1 analog multiplexer for FSR network - Part Type: Analog Switches / Multiplexers **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U11 — [Pin Socket 02x20 for Rpi 5](https://www.flux.ai/project-x/pin-socket-02x20-for-rpi-5~r6.md) - Role Details: Raspberry Pi 5 40-pin header - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 3.3v [pin 1] - 3.3v [pin 17] - 5v [pin 2] - 5v [pin 4] - DNC [pin 27] - DNC [pin 28] - Gnd [pin 20] - Gnd [pin 39] - Gnd [pin 34] - Gnd [pin 30] - Gnd [pin 25] - Gnd [pin 9] - Gnd [pin 6] - Gnd [pin 14] - GPIO_05 [pin 29] - GPIO_06 [pin 31] - GPIO_07 [pin 26] - GPIO_08 [pin 24] - GPIO_09 [pin 21] - GPIO_10 [pin 19] - GPIO_11 [pin 23] - GPIO_12 [pin 32] - GPIO_13 [pin 33] - GPIO_14 [pin 8] - GPIO_15 [pin 10] - GPIO_16 [pin 36] - GPIO_17 [pin 11] - GPIO_18 [pin 12] - GPIO_19 [pin 35] - GPIO_2 [pin 3] - GPIO_20 [pin 38] - GPIO_21 [pin 40] - GPIO_22 [pin 15] - GPIO_23 [pin 16] - GPIO_24 [pin 18] - GPIO_25 [pin 22] - GPIO_26 [pin 37] - GPIO_27 [pin 13] - GPIO_3 [pin 5] - GPIO_4 [pin 7] ### U12 — [TPS62172DSGT](https://www.flux.ai/lcsc/tps62172dsgt~fu53.md) - Role Details: 5V→3.3V buck converter ≥1A - JLCPCB Part Class: Extended Part - Manufacturer Name: TI(德州仪器) - Package or Case Code: WSON-8_L2.0-W2.0-P0.50-TL-EP - Part Type: DC-DC Converters - Manufacturer Part Number: TPS62172DSGT - Role: Power Conversion - LCSC Part Number: C2863694 **Pins:** - AGND [pin 4] - EN [pin 3] - EP [pin 9] - FB [pin 5] - PG [pin 8] - PGND [pin 1] - SW [pin 7] - VIN [pin 2] - VOS [pin 6] ### U12 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - Role: Switching - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C1545936 - JLCPCB Part Class: Extended Part - Role Details: 16:1 analog multiplexer for FSR network - Part Type: Analog Switches / Multiplexers - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Manufacturer Part Number: CD74HC4067M **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U13 — [LTC4412MPS6#TRPBF](https://www.flux.ai/lcsc/ltc4412mps6trpbf~i53e.md) - Role Details: Ideal-diode controller for 5V rail - Product Info Url: https://lcsc.com/product-detail/Pre-ordered-Products_Analog-Devices_LTC4412MPS6-TRPBF_Analog-Devices-ADI-LINEAR-LTC4412MPS6-TRPBF_C688483.html - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2009170904_Analog-Devices-LTC4412MPS6-TRPBF_C688483.pdf - JLCPCB Part Class: Extended Part - Package or Case Code: SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL - Role: Reverse Polarity Protection - Manufacturer Part Number: LTC4412MPS6#TRPBF - Manufacturer Name: ADI(亚德诺) - LCSC Part Number: C688483 **Pins:** - CTL [pin 3] - GATE [pin 5] - GND [pin 2] - SENSE [pin 6] - STAT [pin 4] - VIN [pin 1] ### U16 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Part Type: SRDA3.3-6.TBT - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant - Role: Protection - Role Details: ESD protection for off-board connectors - Manufacturer Part Number: SRDA3.3-6.TBT - License: https://creativecommons.org/licenses/by/4.0/ - Package or Case Code: SOIC127P600X170-9N - Manufacturer Name: Semtech Corporation **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U17 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Role Details: ESD protection for off-board connectors - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant - Part Type: SRDA3.3-6.TBT - Role: Protection - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Manufacturer Name: Semtech Corporation - Package or Case Code: SOIC127P600X170-9N - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRDA3.3-6.TBT **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U18 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Role Details: ESD protection for off-board connectors - Part Type: SRDA3.3-6.TBT - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant - Manufacturer Part Number: SRDA3.3-6.TBT - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Semtech Corporation - Package or Case Code: SOIC127P600X170-9N **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U19 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Manufacturer Name: Semtech Corporation - Package or Case Code: SOIC127P600X170-9N - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRDA3.3-6.TBT - Role: Protection - Role Details: ESD protection for off-board connectors - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Part Type: SRDA3.3-6.TBT **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U2 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - JLCPCB Part Class: Extended Part - Role: Switching - Part Type: Analog Switches / Multiplexers - Role Details: 16:1 analog multiplexer for FSR network - Manufacturer Part Number: CD74HC4067M - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Max Current: 1A - LCSC Part Number: C1545936 - Manufacturer Name: TI(德州仪器) **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U2 — [TPS62172DSGT](https://www.flux.ai/lcsc/tps62172dsgt~fu53.md) - JLCPCB Part Class: Extended Part - Package or Case Code: WSON-8_L2.0-W2.0-P0.50-TL-EP - Manufacturer Name: TI(德州仪器) - Part Type: DC-DC Converters - Role Details: 5V→3.3V buck converter ≥1A - LCSC Part Number: C2863694 - Manufacturer Part Number: TPS62172DSGT - Role: Power Conversion **Pins:** - AGND [pin 4] - EN [pin 3] - EP [pin 9] - FB [pin 5] - PG [pin 8] - PGND [pin 1] - SW [pin 7] - VIN [pin 2] - VOS [pin 6] ### U20 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant - Role: Protection - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Part Type: SRDA3.3-6.TBT - Package or Case Code: SOIC127P600X170-9N - Manufacturer Name: Semtech Corporation - Role Details: ESD protection for off-board connectors - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRDA3.3-6.TBT **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U21 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Manufacturer Part Number: SRDA3.3-6.TBT - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: ESD protection for off-board connectors - Package or Case Code: SOIC127P600X170-9N - Manufacturer Name: Semtech Corporation - Role: Protection - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Part Type: SRDA3.3-6.TBT - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U22 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Part Type: SRDA3.3-6.TBT - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant - Role Details: ESD protection for off-board connectors - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRDA3.3-6.TBT - Role: Protection - Manufacturer Name: Semtech Corporation - Package or Case Code: SOIC127P600X170-9N **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U23 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Role Details: ESD protection for off-board connectors - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRDA3.3-6.TBT - Package or Case Code: SOIC127P600X170-9N - Manufacturer Name: Semtech Corporation - Role: Protection - Part Type: SRDA3.3-6.TBT - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U24 — [SRDA3.3-6.TBT](https://www.flux.ai/baueralex174/srda3p3-6ptbt~pu.md) - Compliance: Pb-Free,Halogen Free,RoHS/WEEE Compliant - Datasheet URL: https://www.semtech.com/uploads/documents/SRDA3.3-6.pdf - Part Type: SRDA3.3-6.TBT - Package or Case Code: SOIC127P600X170-9N - Manufacturer Name: Semtech Corporation - Role Details: ESD protection for off-board connectors - Manufacturer Part Number: SRDA3.3-6.TBT - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - GND [pin 8] - I/O 1 [pin 1] - I/O 2 [pin 2] - I/O 3 [pin 4] - I/O 4 [pin 5] - I/O 5 [pin 6] - I/O 6 [pin 7] - VREF [pin 3] ### U3 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - Manufacturer Part Number: CD74HC4067M - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Part Type: Analog Switches / Multiplexers - JLCPCB Part Class: Extended Part - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C1545936 - Role: Switching - Role Details: 16:1 analog multiplexer for FSR network **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U4 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - JLCPCB Part Class: Extended Part - Part Type: Analog Switches / Multiplexers - Role Details: 16:1 analog multiplexer for FSR network - Manufacturer Part Number: CD74HC4067M - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - LCSC Part Number: C1545936 - Manufacturer Name: TI(德州仪器) - Role: Switching **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U5 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Manufacturer Part Number: CD74HC4067M - Part Type: Analog Switches / Multiplexers - JLCPCB Part Class: Extended Part - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C1545936 - Role Details: 16:1 analog multiplexer for FSR network - Role: Switching **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] ### U6 — [CD74HC4067M](https://www.flux.ai/lcsc/cd74hc4067m~k8td.md) - Package or Case Code: SOIC-24_L15.4-W7.5-P1.27-LS10.3-BL - Manufacturer Part Number: CD74HC4067M - Part Type: Analog Switches / Multiplexers - JLCPCB Part Class: Extended Part - Role: Switching - Manufacturer Name: TI(德州仪器) - LCSC Part Number: C1545936 - Role Details: 16:1 analog multiplexer for FSR network **Pins:** - ~{E} [pin 15] - COMMON/INPUT/OUTPUT [pin 1] - GND [pin 12] - L0 [pin 9] - L1 [pin 8] - L10 [pin 21] - L11 [pin 20] - L12 [pin 19] - L13 [pin 18] - L14 [pin 17] - L15 [pin 16] - L2 [pin 7] - L3 [pin 6] - L4 [pin 5] - L5 [pin 4] - L6 [pin 3] - L7 [pin 2] - L8 [pin 23] - L9 [pin 22] - S0 [pin 10] - S1 [pin 11] - S2 [pin 14] - S3 [pin 13] - VCC [pin 24] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/bharathmanav/brainstorm-a-new-project-with-ai-example~j5](https://www.flux.ai/bharathmanav/brainstorm-a-new-project-with-ai-example~j5).* --- *Generated from [https://www.flux.ai/bharathmanav/brainstorm-a-new-project-with-ai-example~j5](https://www.flux.ai/bharathmanav/brainstorm-a-new-project-with-ai-example~j5)*