# ESP32-WROOM-32E Reference Design ## Description ECU de competición ESP32-WROOM-32E • CAN • USB-C • microSD • 80×60 mm JLCPCB ## Project Details - **Owner:** joshbuttemer - **Created:** 9/28/2024 - **Last Updated:** 9/28/2024 - **Visibility:** Public - **Board Dimensions:** 80 × 60mm - **Cost Target:** 8–10USD - **System Architecture:** flowchart TB PWR[Power & Protection] CORE[Core & Connectivity] COMM[Communication Interfaces] IO[Motor & Auxiliary Outputs] ADC[Analog Inputs & Map Selector] STORAGE[Storage (microSD)] PWR -->|12V in, TVS, reverse Polarity| REG5[12→5V Buck Regulator] REG5 --> REG3[3.3V LDO (ME6211)] REG3 --> CORE CORE -->|ESP32-WROOM-32E| COMM COMM -->|USB-C & CP2102N| HOST[Host PCTuner] COMM -->|CAN via SN65HVD230Q-Q1| CAN[CAN Bus] CORE -->|SPI| STORAGE CORE -->|GPIO Digital| IO CORE -->|ADC GPIO| ADC ADC -->|TPS, CLT, IAT, MAP, O2, VBAT| SENSORS(Sensors) IO -->|Injectors x6 with AOD4184A & SS56| INJ[Injectors] IO -->|5V smart coil interface via SN74HCT14N| COIL[Smart Coils] IO -->|Aux MOSFETs x4| AUX[Aux Outputs] - **Connectors:** JST-XH - **License:** https://creativecommons.org/licenses/by/4.0/ - **Layer Count:** 2 - **Compliance:** RoHS - **Software:** Bare metal ## Key Components ### BATT1 — [1070TR](https://www.flux.ai/jharwinbarrozo/1070tr~eit.md) - Voltage: 3V - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p5.pdf - Manufacturer Part Number: 1070TR - Manufacturer Name: Keystone Electronics **Pins:** - - [pin 2] - + [pin 1] ### BOOT — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Part Type: Switch - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Manufacturer Name: C&K - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### D1 — [1N5819HW-7-F](https://www.flux.ai/jecstronic/1n5819hw-7-f~x5v.md) - Datasheet URL: https://www.diodes.com/assets/Datasheets/ds30217.pdf - Manufacturer Part Number: 1N5819HW-7-F - Manufacturer Name: Diodes Incorporated - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode **Pins:** - A [pin 2] - K [pin 1] ### D2 — [WE-TVS-82400102](https://www.flux.ai/vasy_skral/we-tvs-82400102~xt.md) - Manufacturer Name: Würth Elektronik - Part Type: Protection - Manufacturer Part Number: 82400102 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://katalog.we-online.de/pbs/datasheet/82400102.pdf **Pins:** - GND [pin 2] - IO1 [pin 6] - IO1 [pin 1] - IO2 [pin 4] - IO2 [pin 3] - VDD [pin 5] ### D3 — [MBR120VLSFT1G](https://www.flux.ai/adrian95/mbr120vlsft1g~9wn.md) - Role: Protection - Role Details: Reverse polarity protection diode on 12V input - Manufacturer Name: onsemi - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.onsemi.com/pdf/datasheet/mbr120vlsft1-d.pdf - Part Type: Diode - Manufacturer Part Number: MBR120VLSFT1G **Pins:** - A [pin 2] - K [pin 1] ### D3 — [SS56](https://www.flux.ai/lcsc/ss56~hea6.md) - Manufacturer Part Number: SS56 - Diode Type: Schottky Diode - Role Details: Freewheeling diode for low-side injector driver - Role: Flyback / Freewheeling - Manufacturer Name: YFSEMI(江苏佑风微) - Part Type: Schottky Barrier Diodes (SBD) - Reverse Voltage: 60V - Forward Voltage: 0.55V - LCSC Part Number: C2887444 - Package or Case Code: SMC_L6.9-W5.9-LS7.9-R-RD - JLCPCB Part Class: Extended Part **Pins:** - A [pin 1] - K [pin 2] ### D4 — [SS56](https://www.flux.ai/lcsc/ss56~hea6.md) - JLCPCB Part Class: Extended Part - Package or Case Code: SMC_L6.9-W5.9-LS7.9-R-RD - Role Details: Freewheeling diode for low-side injector driver - LCSC Part Number: C2887444 - Forward Voltage: 0.55V - Reverse Voltage: 60V - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Name: YFSEMI(江苏佑风微) - Role: Flyback / Freewheeling - Manufacturer Part Number: SS56 - Diode Type: Schottky Diode **Pins:** - A [pin 1] - K [pin 2] ### D5 — [SS56](https://www.flux.ai/lcsc/ss56~hea6.md) - LCSC Part Number: C2887444 - Reverse Voltage: 60V - Forward Voltage: 0.55V - JLCPCB Part Class: Extended Part - Role: Flyback / Freewheeling - Package or Case Code: SMC_L6.9-W5.9-LS7.9-R-RD - Role Details: Freewheeling diode for low-side injector driver - Diode Type: Schottky Diode - Manufacturer Part Number: SS56 - Manufacturer Name: YFSEMI(江苏佑风微) - Part Type: Schottky Barrier Diodes (SBD) **Pins:** - A [pin 1] - K [pin 2] ### D6 — [SS56](https://www.flux.ai/lcsc/ss56~hea6.md) - Manufacturer Name: YFSEMI(江苏佑风微) - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Part Number: SS56 - Diode Type: Schottky Diode - Role Details: Freewheeling diode for low-side injector driver - JLCPCB Part Class: Extended Part - Role: Flyback / Freewheeling - Package or Case Code: SMC_L6.9-W5.9-LS7.9-R-RD - LCSC Part Number: C2887444 - Forward Voltage: 0.55V - Reverse Voltage: 60V **Pins:** - A [pin 1] - K [pin 2] ### D7 — [SS56](https://www.flux.ai/lcsc/ss56~hea6.md) - Part Type: Schottky Barrier Diodes (SBD) - Manufacturer Name: YFSEMI(江苏佑风微) - Manufacturer Part Number: SS56 - Diode Type: Schottky Diode - JLCPCB Part Class: Extended Part - Role Details: Freewheeling diode for low-side injector driver - Package or Case Code: SMC_L6.9-W5.9-LS7.9-R-RD - LCSC Part Number: C2887444 - Forward Voltage: 0.55V - Reverse Voltage: 60V - Role: Flyback / Freewheeling **Pins:** - A [pin 1] - K [pin 2] ### D8 — [SS56](https://www.flux.ai/lcsc/ss56~hea6.md) - Reverse Voltage: 60V - Forward Voltage: 0.55V - LCSC Part Number: C2887444 - Package or Case Code: SMC_L6.9-W5.9-LS7.9-R-RD - Role Details: Freewheeling diode for low-side injector driver - JLCPCB Part Class: Extended Part - Diode Type: Schottky Diode - Manufacturer Part Number: SS56 - Manufacturer Name: YFSEMI(江苏佑风微) - Part Type: Schottky Barrier Diodes (SBD) - Role: Flyback / Freewheeling **Pins:** - A [pin 1] - K [pin 2] ### IC1 — [CH340C](https://www.flux.ai/vasyl/ch340c~qf3.md) - Datasheet URL: https://datasheet.lcsc.com/szlcsc/Jiangsu-Qin-Heng-CH340C_C84681.pdf - Manufacturer Part Number: CH340C - Part Type: Integrated Circuit - Manufacturer Name: Wah **Pins:** - ~CTS [pin 9] - ~DCD [pin 12] - ~DSR [pin 10] - ~DTR [pin 13] - ~RI [pin 11] - ~RTS [pin 14] - GND [pin 1] - NC [pin 7] - NC [pin 8] - R232 [pin 15] - RXD [pin 3] - TXD [pin 2] - UD- [pin 6] - UD+ [pin 5] - V3 [pin 4] - VCC [pin 16] ### J1 — [Pin Header 01x16 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x16-2p54mm-vertical~1qc.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **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_2 [pin 2] - 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] ### J1 — [B2B-XH-A(LF)(SN)](https://www.flux.ai/adrian95/b2b-xh-alfsn~5xx.md) - Role Details: Power input - Part Type: Connector - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/eXH.pdf - Manufacturer Name: JST Sales America Inc. - Manufacturer Part Number: B2B-XH-A(LF)(SN) **Pins:** - P1 [pin 1] - P2 [pin 2] ### J2 — [Pin Header 01x16 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x16-2p54mm-vertical~1qc.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **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_2 [pin 2] - 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] ### J2 — [B7B-XH-A(LF)(SN)](https://www.flux.ai/adrian95/b7b-xh-alfsn~1i8.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Sensor array - Role: Connector - Manufacturer Name: JST Sales America Inc. - Part Type: Connector - Manufacturer Part Number: B7B-XH-A(LF)(SN) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/eXH.pdf **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] - Pin_7 [pin 7] ### J3 — [ST-TF-003A](https://www.flux.ai/adrian95/st-tf-003a~3op.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Connector - Manufacturer Name: Suntech - Part Type: Connector - Datasheet URL: https://www.snapeda.com/parts/ST-TF-003A/Suntech/view-part/?ref=search&t=micro%20sd%20socket - Role Details: microSD card socket for SPI interface - Manufacturer Part Number: ST-TF-003A **Pins:** - CD [pin G2] - CD2 [pin G3] - CS [pin 2] - DI [pin 3] - DO [pin 7] - GND [pin G4] - GND [pin G1] - GND [pin 6] - NC [pin 1] - RSV [pin 8] - SCK [pin 5] - SHIELD [pin 9] - VCC [pin 4] ### J3 — [B6B-XH-A(LF)(SN)](https://www.flux.ai/adrian95/b6b-xh-alfsn~to0.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - 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) - Manufacturer Name: JST Sales America Inc. - Role: Connector - Role Details: Injector drivers **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] ### J4 — [B6B-XH-A(LF)(SN)](https://www.flux.ai/adrian95/b6b-xh-alfsn~to0.md) - Manufacturer Name: JST Sales America Inc. - 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) - Role Details: Smart coil drivers - Role: Connector - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **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] ### J5 — [B4B-XH-A(LF)(SN)](https://www.flux.ai/adrian95/b4b-xh-alfsn~8ne.md) - Part Type: Connector - Role Details: Auxiliary outputs - Role: Connector - Manufacturer Name: JST Sales America Inc. - Manufacturer Part Number: B4B-XH-A(LF)(SN) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/eXH.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### J6 — [B4B-XH-A(LF)(SN)](https://www.flux.ai/adrian95/b4b-xh-alfsn~8ne.md) - Role Details: Test points - Part Type: Connector - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: JST Sales America Inc. - Manufacturer Part Number: B4B-XH-A(LF)(SN) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/eXH.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### PWR — [LED-0805-Template-2](https://www.flux.ai/vasy_skral/led-0805-template-2~uu0.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### Q1 — BSS138 - Part Type: Transistor - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Part Number: BSS138 - Manufacturer Name: onsemi **Pins:** - D - G - S ### Q2 — BSS138 - Part Type: Transistor - Manufacturer Name: onsemi - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Part Number: BSS138 **Pins:** - D - G - S ### Q3 — [AOD4184A](https://www.flux.ai/jecstronic/aod4184a~qdj.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Manufacturer Part Number: AOD4184A - Part Type: Transistor - Role Details: Low-side injector driver for fuel injectors - Role: Switching - Datasheet URL: https://www.aosmd.com/sites/default/files/res/datasheets/AOD4184A.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - DRAIN [pin 2] - GATE [pin 1] - SOURCE [pin 3] ### Q4 — [AOD4184A](https://www.flux.ai/jecstronic/aod4184a~qdj.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.aosmd.com/sites/default/files/res/datasheets/AOD4184A.pdf - Manufacturer Part Number: AOD4184A - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Role Details: Low-side injector driver for fuel injectors - Role: Switching - Part Type: Transistor **Pins:** - DRAIN [pin 2] - GATE [pin 1] - SOURCE [pin 3] ### Q5 — [AOD4184A](https://www.flux.ai/jecstronic/aod4184a~qdj.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.aosmd.com/sites/default/files/res/datasheets/AOD4184A.pdf - Manufacturer Part Number: AOD4184A - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Role: Switching - Role Details: Low-side injector driver for fuel injectors - Part Type: Transistor **Pins:** - DRAIN [pin 2] - GATE [pin 1] - SOURCE [pin 3] ### Q6 — [AOD4184A](https://www.flux.ai/jecstronic/aod4184a~qdj.md) - Datasheet URL: https://www.aosmd.com/sites/default/files/res/datasheets/AOD4184A.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Role: Switching - Part Type: Transistor - Role Details: Low-side injector driver for fuel injectors - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Manufacturer Part Number: AOD4184A **Pins:** - DRAIN [pin 2] - GATE [pin 1] - SOURCE [pin 3] ### Q7 — [AOD4184A](https://www.flux.ai/jecstronic/aod4184a~qdj.md) - Manufacturer Name: Alpha & Omega Semiconductor Inc. - Manufacturer Part Number: AOD4184A - Role Details: Low-side injector driver for fuel injectors - Part Type: Transistor - Role: Switching - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.aosmd.com/sites/default/files/res/datasheets/AOD4184A.pdf **Pins:** - DRAIN [pin 2] - GATE [pin 1] - SOURCE [pin 3] ### Q8 — [AOD4184A](https://www.flux.ai/jecstronic/aod4184a~qdj.md) - Role Details: Low-side injector driver for fuel injectors - Part Type: Transistor - Manufacturer Part Number: AOD4184A - Manufacturer Name: Alpha & Omega Semiconductor Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Role: Switching - Datasheet URL: https://www.aosmd.com/sites/default/files/res/datasheets/AOD4184A.pdf **Pins:** - DRAIN [pin 2] - GATE [pin 1] - SOURCE [pin 3] ### Q9, Q10, Q11, Q12 — BSS138 - Role Details: Generic AUX output switch - Part Type: Transistor - Role: Switching - Manufacturer Part Number: BSS138 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Name: onsemi **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q9, Q10, Q11, Q12 — BSS138 - Manufacturer Part Number: BSS138 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Name: onsemi - Part Type: Transistor - Role: Switching - Role Details: Generic AUX output switch **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q9, Q10, Q11, Q12 — BSS138 - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Name: onsemi - Manufacturer Part Number: BSS138 - Role: Switching - Part Type: Transistor - Role Details: Generic AUX output switch **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### Q9, Q10, Q11, Q12 — BSS138 - Role: Switching - Part Type: Transistor - Datasheet URL: https://www.onsemi.com/pdf/datasheet/bss138-d.pdf - Manufacturer Part Number: BSS138 - Manufacturer Name: onsemi - Role Details: Generic AUX output switch **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### RST — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Part Type: Switch - Manufacturer Name: C&K - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### U1 — [AMS1117-3.3](https://www.flux.ai/vasy_skral/ams1117-33~34.md) - Manufacturer Part Number: AMS1117-3.3 - Manufacturer Name: AMS - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811021917_Advanced-Monolithic-Systems-AMS1117_C6188.pdf - Part Type: Integrated Circuit **Pins:** - GND [pin 1] - TAB(VOUT) [pin 4] - VIN [pin 3] - VOUT [pin 2] ### U2 — [ESP32-WROOM-32E](https://www.flux.ai/vasy_skral/esp32-wroom-32e~7ed.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ESP32-WROOM-32E - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32e_esp32-wroom-32ue_datasheet_en.pdf - Part Type: Integrated Circuit - Manufacturer Name: Espressif Systems **Pins:** - GND=> . [pin 15] - EN [pin 3] - GND [pin 38] - GND [pin 39] - GND [pin 1] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 18] - NC [pin 19] - NC [pin 17] - NC [pin 21] - NC [pin 22] - NC [pin 32] - NC [pin 20] - RXD0/IO3 [pin 34] - SENSOR_VN [pin 5] - SENSOR_VP [pin 4] - TXD0/IO1 [pin 35] - VDD [pin 2] ### U3 — [SN65HVD230Q-Q1](https://www.flux.ai/adrian95/sn65hvd230q-q1~d7m.md) - License: https://creativecommons.org/licenses/by/4.0/ - Role: Interface - Manufacturer Part Number: SN65HVD230Q-Q1 - Manufacturer Name: Texas Instruments - Role Details: CAN transceiver for 1 Mbps CAN bus - Datasheet URL: https://www.ti.com/lit/ds/symlink/sn65hvd230q-q1.pdf - Part Type: Integrated Circuit **Pins:** - CANH [pin 7] - CANL [pin 6] - D [pin 1] - GND [pin 2] - R [pin 4] - RS [pin 8] - VCC [pin 3] - VREF [pin 5] ### U4 — [SN74HCT14N](https://www.flux.ai/lcsc/sn74hct14n~rhpx.md) - Package or Case Code: PDIP-14_L19.7-W6.6-P2.54-LS8.3-BL - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1912111437_Texas-Instruments-SN74HCT14N_C352959.pdf - Part Type: Gates - Role: Driver - Manufacturer Name: TI(德州仪器) - Manufacturer Part Number: SN74HCT14N - JLCPCB Part Class: Extended Part - LCSC Part Number: C352959 - Role Details: Inverting Schmitt-trigger for six 5 V smart-coil outputs - Product Info Url: https://lcsc.com/product-detail/Others_Texas-Instruments-TI-SN74HCT14N_C352959.html **Pins:** - 1A [pin 1] - 1Y [pin 2] - 2A [pin 3] - 2Y [pin 4] - 3A [pin 5] - 3Y [pin 6] - 4A [pin 9] - 4Y [pin 8] - 5A [pin 11] - 5Y [pin 10] - 6A [pin 13] - 6Y [pin 12] - GND [pin 7] - VCC [pin 14] ### U5 — [LMV331IDBVR](https://www.flux.ai/adrian95/lmv331idbvr~psu.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - Datasheet URL: https://www.ti.com/lit/ds/symlink/lmv331.pdf - Role: Sensing (Comparator) - Role Details: Analog comparator for map selector and sensor threshold detection - Manufacturer Part Number: LMV331IDBVR **Pins:** - 1IN- [pin 3] - 1IN+ [pin 1] - GND [pin 2] - OUT [pin 4] - VCC [pin 5] ### USB1 — [TYPE-C-31-M-12](https://www.flux.ai/vasy_skral/type-c-31-m-12~75f.md) - Manufacturer Part Number: TYPE-C-31-M-12 - Datasheet URL: https://datasheet.lcsc.com/lcsc/2205251630_Korean-Hroparts-Elec-TYPE-C-31-M-12_C165948.pdf - Part Type: Connector - Manufacturer Name: Korean Hroparts Elec **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin B1A12] - GND [pin A1B12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin S3] - SHIELD [pin S1] - SHIELD [pin S4] - SHIELD [pin S2] - VBUS [pin A4B9] - VBUS [pin B4A9] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/joshbuttemer/esp32-wroom-32e-reference-design~ja](https://www.flux.ai/joshbuttemer/esp32-wroom-32e-reference-design~ja).* --- *Generated from [https://www.flux.ai/joshbuttemer/esp32-wroom-32e-reference-design~ja](https://www.flux.ai/joshbuttemer/esp32-wroom-32e-reference-design~ja)*