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 layers33.4 × 39.2 mm
ESP32c3Mini
PragyanSenDeka/ESP32Mini_CustomPCB- Size
- 33.4 × 39.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 29
- Nets
- 30
- Pads
- 137
- Tracks, vias
- 173, 20
- Pours
- 13
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Apr 2026
- Updated
- 4 Apr 2026
Overview
ESP32c3Mini is an open-source printed circuit board by PragyanSenDeka, from the PragyanSenDeka/ESP32Mini_CustomPCB repository on GitHub. It is a 4-layer board of 33.4 × 39.2 mm with 29 parts on 30 nets, routed with 173 tracks and 20 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.mdESP32 Mini Board (4-Layer PCB)
Overview
This project presents a ESP32 Mini evaluation board PCB layout, designed with a strong focus on signal integrity, power distribution, and manufacturability.
Key Design Parameters
| Parameter | Value / Description |
|---|---|
| USB CC Resistors | 5.1 kΩ pull-down resistors |
| Crystal Frequency | 32.768 kHz |
| Decoupling Capacitors | 100 nF (high-frequency), 4.7 µF (bulk) |
| USB Differential Impedance | ~90 Ω (microstrip) |
| Board Thickness | 1 mm |
| PCB Layers | 4 Layers (Top, GND, Power, Bottom) |
| Via Current Capacity | ~1 A per via (depends on drill & plating) |
PCB Stackup
- Top Layer – Signal routing and component placement
- Inner Layer 1 (GND) – Solid ground plane (low impedance return path)
- Inner Layer 2 (Power) – Power distribution plane
- Bottom Layer – Secondary routing
Parts
29| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 4u7 | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C4, C6, C8, C9 |
| 4 | 10K | Resistor_SMD:R_0402_1005Metric | R4, R7, R8, R9 |
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric | C5, C7, C10 |
| 2 | 100R | Resistor_SMD:R_0402_1005Metric | R5, R6 |
| 2 | Conn_01x08_Pin | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2, J3 |
| 2 | R | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | SW_Push | Button_Switch_SMD:SW_SPST_B3U-1000P | SW1, SW2 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | Crystal | Crystal:Crystal_SMD_0603-2Pin_6.0x3.5mm | Y1 |
| 1 | ESP32-C3-WROOM-02 | RF_Module:ESP32-C3-WROOM-02 | U3 |
| 1 | PESD5V0L1ULD | Diode_SMD:D_SOD-882D | D1 |
| 1 | R_Small | Resistor_SMD:R_0402_1005Metric | R3 |
| 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 ESP32c3Mini PCB?
It measures 33.4 × 39.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the ESP32c3Mini use?
29 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 ESP32c3Mini KiCad files?
From the PragyanSenDeka/ESP32Mini_CustomPCB repository on GitHub, at the commit this page was made from: the board is ESP32c3Mini.kicad_pcb and its schematic ESP32c3Mini.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the ESP32c3Mini design in my own project?
Its repository states no licence, so its author keeps all rights: ask PragyanSenDeka before reusing the design.
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