2 layers33.3 × 38 mm
ESP32-C3-WROOM02 dev board
pushtiujeniya/ESP32-C3-WROOM02_dev-board
This project is a custom 2-layer development board designed around the ESP32-C3-WROOM-02 Wi‑Fi + Bluetooth MCU module.
30 parts2
4 layers28.6 × 37.2 mm
Esp32
d3ckerd/Custom-ESP32Created a 4 layer custom esp32 dev board using the "ESP32-C3-WROOM-02" module. To learn much about how to create such a module I followed and learned from Pajopcb's youtube tutorials on the esp32. Link to his youtube channel: https://www.youtube.com/@PajoPCB
- Size
- 28.6 × 37.2 mm
- Copper layers
- 4
- Thickness
- 1 mm
- Parts
- 31
- Nets
- 29
- Pads
- 145
- Tracks, vias
- 160, 33
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Aug 2026
- Updated
- 24 Aug 2026
Overview
Esp32 is an open-source printed circuit board by d3ckerd, from the d3ckerd/Custom-ESP32 repository on GitHub, published under the MIT licence. It is a 4-layer board of 28.6 × 37.2 mm with 31 parts on 29 nets, routed with 160 tracks and 33 vias.
It is built around the ESP32-C3-WROOM-02-H4, AP2112K-3.3 and USBLC6-2SC6, with the PESD5V0L1ULD among its other parts. Its parts include 10 capacitors, 9 resistors, 3 ICs, 3 connectors and 2 switches. It belongs with the ESP32 and RISC-V boards of this library.
Main components
4
ESP32-C3-WROOM-02-H4
SMD,20x18mm-105dBm -40℃~+105℃ 2.4GHz 20.5dBm 345mA 3V~3.6V 82mA Bluetooth5.0 ESP32-C3 On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,20x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)
PESD5V0L1ULD
DFN1006-2(SOD-882)-55℃~+150℃ 1 10nA 12V 25pF 3.5A@8/20us 42W 5V 6.4V ESD IEC 61000-4-2、IEC 61000-4-5 Unidirectional DFN1006-2(SOD-882) ESD and Surge Protection (TVS/ESD) ROHSNexperiaESD And Surge Protection (TVS/ESD)
README
README.mdCustom-ESP32
Created a 4 layer, custom ESP32-C3 development board featuring USB-C connection, an onboard 3.3V regulator, and pin headers. To learn how to create this module I followed and learned from Pajopcb's youtube tutorials on the esp32. Link to his youtube channel: Pajopcb
In the hardware folder you will find the kicad files for my shcematic, pcb, and gerbers (that I used to order the board). In the docs folder you will find pictures of the board in real life and in the 3D kicad viewer, and a quick access pdf of the schematic used.
In the future of this project if I were to order the board again and add a slight redesign, I would order longer pin headers (they don't snap into the board properly right now, have to use female to male pins instead), and I would add an led indicator for power being supplied to the board.
Hardware Specs
- Microcontroller: ESP32-C3-WROOM-02
- USB Interface: Native USB-C for power
- Voltage Regulator: AP2112K-3.3V
- RTC: External 32.768 kHz Crystal
Getting started with board
- Plug USB-C into your computer and dev board
- Board should pop up as a new Serial COM port
- In Arduino IDE set the board target to "ESP32C3 Dev Module"
- Enable 'USB CDC On Boot: Enabled' (allows Serial.print() over USB-C port)
License
- Hardware: CERN Open Hardware License Version 2 - Permissive (CERN-OHL-P)
- Software: MIT License
Note: There has been no software added to this project yet, but the manufactured boards will be used for esp32 software projects in the future.
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C5 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R5, R7, R8, R9 |
| 2 | 100n | Capacitor_SMD:C_0201_0603Metric | C9, C10 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2, J3 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1, SW2 |
| 2 | TBD | Capacitor_SMD:C_0201_0603Metric | C7, C8 |
| 1 | 100R | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 100n | Capacitor_SMD:C_0402_1005Metric | C6 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | Crystal | Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm | Y1 |
| 1 | ESP32-C3-WROOM-02 | RF_Module:ESP32-C3-WROOM-02 | U2 |
| 1 | LOGO | Silkscreen:brotherBetter | G*** |
| 1 | LOGO | Silkscreen:circle | G*** |
| 1 | PESD5V0L1ULD | Diode_SMD:D_SOD-882D | D1 |
| 1 | R | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | TBD | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J1 |
Questions
How big is the Esp32 PCB?
It measures 28.6 × 37.2 mm and has 4 copper layers, 1 mm thick.
What parts does the Esp32 use?
31 parts, built around the ESP32-C3-WROOM-02-H4, AP2112K-3.3, USBLC6-2SC6 and PESD5V0L1ULD. 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 Esp32 KiCad files?
From the d3ckerd/Custom-ESP32 repository on GitHub, at the commit this page was made from: the board is hardware/esp32.kicad_pcb and its schematic hardware/esp32.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Esp32 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).
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