4 layers94 × 81.8 mm
ESP32 IO Controller
Satya777777/ESP32-Industrial-IO-Controller
4-layer ESP32-based industrial I/O controller designed in KiCad with 0–10 V, 4–20 mA, RS485, USB-C and relay interfaces.
58 partsMIT
2 layers70 × 90 mm
CarBoard Raspberry PiPico
Maczla/Raspberry_Pi_Pico_Automotive_InterfaceAutomotive interface board for Raspberry Pi Pico with 12 V power protection, vehicle signal inputs, SWC analog inputs and configurable PWM output.
- Size
- 70 × 90 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 72
- Nets
- 59
- Pads
- 188
- Tracks, vias
- 320, 16
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 30 Jul 2026
- Updated
- 30 Jul 2026
Overview
CarBoard Raspberry PiPico is an open-source printed circuit board by Maczla, from the Maczla/Raspberry_Pi_Pico_Automotive_Interface repository on GitHub, published under the MIT licence. It is a 2-layer board of 70 × 90 mm with 72 parts on 59 nets, routed with 320 tracks and 16 vias.
It is built around the AP63205WU, MMBT3904 and BZV55B12, with the ESD9B3.3ST5G, FQP27P06 and PTVS26VZ1USK among its other parts. Its parts include 23 resistors, 17 capacitors, 5 diodes, 4 transistors and 3 connectors. It belongs with the interfaces and adapters boards and the RP2040 boards of this library.
Main components
6
AP63205WU
TSOT-23-6-40℃~+85℃@(TA) 1 1.1MHz 22uA 2A 3.8V~32V 5V Buck Built-in Fixed Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Hiccup current limiting、EMI optimization (spread spectrum) Step-down type Yes TSOT-23-6 DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
BZV55B12
SOD-80-65℃~+200℃ 1 Independent 100nA@9.1V 11.76V~12.24V 12V 20Ω 500mW 90Ω SOD-80 Zener Diodes ROHSLGEZener Diodes
ESD9B3.3ST5G
SOD-923(0402)ESD And Surge Protection (TVS/ESD)TECH PUBLIC
FQP27P06
TO-220-55℃~+175℃ 1 P-Channel 1.4nF 120W 27A 43nC@10V 4V 60V 70mΩ@10V TO-220 MOSFETs ROHSonsemiMOSFETs
PTVS26VZ1USK
-ESD And Surge Protection (TVS/ESD)Nexperia
README
README.mdRaspberry Pi Pico Automotive Interface Board
Overview
This project is a custom automotive interface board designed around the Raspberry Pi Pico (RP2040). It enables safe integration of the microcontroller with a standard 12 V vehicle electrical system by providing power conversion, input signal conditioning, protection circuits, and configurable PWM output.
The board was designed entirely from scratch in KiCad 9, following recommended PCB layout practices for switching power supplies and automotive electronics.
The project includes complete design files, production-ready Gerber files, BOM, and manufacturing documentation.
Features
- 12 V to 5 V DC/DC buck converter (AP63205)
- Reverse polarity protection using P-channel MOSFET
- TVS surge protection on the power input
- Zener gate protection
- Vehicle signal inputs (Reverse and Illumination)
- Steering Wheel Control (SWC) analog inputs
- Configurable PWM output (Push-Pull or Open-Drain)
- ESD protection on PWM output
- Raspberry Pi Pico (RP2040) module support
- Production-ready PCB layout
- ERC = 0
- DRC = 0
Hardware
Main Components
| Component | Part Number |
|---|---|
| MCU Module | Raspberry Pi Pico |
| Buck Converter | AP63205WU-7 |
| Input TVS | PTVS26VZ1USKYL |
| Reverse Polarity MOSFET | FQP27P06 |
| PWM MOSFET | 2N7002 |
| Input Transistor | MMBT3904 |
| Power Inductor | ASPI-0630LR-4R7M-T15 |
PCB Specifications
- Designed in KiCad 9
- 2-layer PCB
- Ground plane
- Automotive power input
- Optimized placement of switching regulator components
- Manufacturing-ready design
Repository Contents
Hardware/
Documentation/
Gerbers/
Images/
README.md
LICENSEImages
Schematic
(Insert schematic image here)
PCB Layout
(Insert PCB top view here)
3D View
(Insert 3D render here)
Manufacturing Files
The repository includes:
- KiCad project
- Schematic
- PCB layout
- Bill of Materials (BOM)
- Gerber files
- Drill files
Software
Designed using:
- KiCad 9
- Raspberry Pi Pico RP2040
Design
Maciej Zaczyk
License
This project is released under the MIT License.
Parts
72| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1, C4, C5, C6, C10, C13, C14, C15, C16, C17 |
| 5 | 10k | Resistor_SMD:R_0805_2012Metric | R4, R6, R10, R17, R22 |
| 4 | 100k | Resistor_SMD:R_0805_2012Metric | R1, R3, R7, R23 |
| 3 | 10uF | Capacitor_SMD:C_0805_2012Metric | C2, C3, C9 |
| 2 | 100 | Resistor_SMD:R_0805_2012Metric | R20, R21 |
| 2 | 15k | Resistor_SMD:R_0805_2012Metric | R11, R18 |
| 2 | 1k | Resistor_SMD:R_0805_2012Metric | R13, R14 |
| 2 | 22k | Resistor_SMD:R_0805_2012Metric | R12, R19 |
| 2 | 22uF / 16V | Capacitor_SMD:C_1210_3225Metric | C11, C12 |
| 2 | 4,7k | Resistor_SMD:R_0805_2012Metric | R8, R15 |
| 2 | 47k | Resistor_SMD:R_0805_2012Metric | R2, R5 |
| 2 | 6,8k | Resistor_SMD:R_0805_2012Metric | R9, R16 |
| 2 | D_Small | Diode_SMD:D_0805_2012Metric | D3, D4 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q2, Q3 |
| 1 | 100nF | Capacitor_SMD:C_1210_3225Metric | C8 |
| 1 | 100uF / 35V | Capacitor_SMD:CP_Elec_6.3x5.9 | C7 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q4 |
| 1 | 3A | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 4.7uH | Inductor_SMD:L_6.3x6.3_H3 | L1 |
| 1 | AP63205WU | Package_TO_SOT_SMD:TSOT-23-6 | U1 |
| 1 | BZV55B12 | Diode_SMD:D_MiniMELF | D2 |
| 1 | DISPLAY_PWM_OUT | Connector_JST:JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J3 |
| 1 | ESD9B3.3ST5G | Diode_SMD:D_SOD-923 | D5 |
| 1 | FQP27P06 | Package_TO_SOT_THT:TO-220-3_Vertical | Q1 |
| 1 | OPEN-DRAIN | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP12 |
| 1 | PTVS26VZ1USK | Diode_SMD:Nexperia_DSN1608-2_1.6x0.8mm | D1 |
| 1 | PUSH-PULL | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP11 |
| 1 | RaspberryPi_Pico | Module:RaspberryPi_Pico_Common_THT | A1 |
| 1 | SWC1_10K | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP3 |
| 1 | SWC1_15K | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP4 |
| 1 | SWC1_22K | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP5 |
| 1 | SWC1_4K7 | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP1 |
| 1 | SWC1_6K8 | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP2 |
| 1 | SWC2_10K | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP8 |
| 1 | SWC2_15K | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP9 |
| 1 | SWC2_22K | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP10 |
| 1 | SWC2_4K7 | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP6 |
| 1 | SWC2_6K8 | Jumper:SolderJumper-2_P1.3mm_Open_TrianglePad1.0x1.5mm | JP7 |
| 1 | VEHICLE_SIGNALS | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | Vehicle Power | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1 |
The 68 most common of 72 parts.
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Questions
How big is the CarBoard Raspberry PiPico PCB?
It measures 70 × 90 mm and has 2 copper layers, 1.6 mm thick.
What parts does the CarBoard Raspberry PiPico use?
72 parts, built around the AP63205WU, MMBT3904, BZV55B12 and ESD9B3.3ST5G. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the CarBoard Raspberry PiPico KiCad files?
From the Maczla/Raspberry_Pi_Pico_Automotive_Interface repository on GitHub, at the commit this page was made from: the board is KiCad/CarBoard_Raspberry PiPico.kicad_pcb and its schematic KiCad/CarBoard_Raspberry PiPico.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the CarBoard Raspberry PiPico design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).