4 layers85 × 56 mm
2 layers25.4 × 34.2 mm
C3 Mini is a mini WiFi and Bluetooth5 (LE) board based on ESP32-C3FH4
- Size
- 25.4 × 34.2 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 32
- Nets
- 36
- Pads
- 149
- Tracks, vias
- 403, 74
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 6 (file 20211014)
- Created
- 12 Sep 2022
- Updated
- 12 Sep 2022
Overview
C3 mini is an open-source printed circuit board by sergiomd4, from the sergiomd4/wemos-c3mini-clone repository on GitHub, published under the CC0-1.0 licence. It is a 2-layer board of 25.4 × 34.2 mm with 32 parts on 36 nets, routed with 403 tracks and 74 vias.
It is built around the ESP32-C3. Its parts include 15 capacitors, 6 resistors, 3 connectors, 2 switches and 1 IC. It belongs with the radio and wireless boards and the ESP32 and RISC-V boards of this library.
Main components
1README
README.mdC3 Mini Clone
C3 Mini Clone is a mini WiFi and Bluetooth5 (LE) board based on ESP32-C3FH4
Features
- Based on ESP32-C3 WiFi & Bluetooth LE RISC-V Single-Core CPU
- Type-C USB
- 4MB Flash
- 12x IO
- ADC, I2C, SPI, UART
- Compatible with LOLIN D1 mini shields
- Compatible with MicroPython, Arduino, CircuitPython and ESP-IDF
- Default firmware: MicroPython
Technical specifications
- Operating Voltage 3.3 V
- Digital I/O Pins 12
- Clock Speed 160 MHz
- Flash 4MB
- Size 34.3*25.4 mm
- Weight 2.4 g
Repository Contents
- /Production - Gerber files, drill files, BOM, CPL file
- /Hardware - KiCad PCB files
- /Documents - Schematics pdf, datasheet
The switch footprint is in the library inside the Hardware folder.
Parts
32| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100nF | Capacitor_SMD:C_0402_1005Metric | C6, C7, C8, C14 |
| 3 | 10k | Resistor_SMD:R_0402_1005Metric | R3, R4, R6 |
| 3 | 10uF | Capacitor_SMD:C_0603_1608Metric | C3, C17, C18 |
| 3 | 1uF | Capacitor_SMD:C_0402_1005Metric | C4, C5, C11 |
| 2 | 15pF | Capacitor_SMD:C_0402_1005Metric | C12, C13 |
| 2 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2 |
| 2 | P_01x08-0.9 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2, J3 |
| 2 | SW_2x4x3.5 | EOS:ST-1114A | SW1, SW2 |
| 1 | 0R | Inductor_SMD:L_0603_1608Metric | L1 |
| 1 | 10nF | Capacitor_SMD:C_0402_1005Metric | C1 |
| 1 | 1pF | Capacitor_SMD:C_0402_1005Metric | C15 |
| 1 | 2k | Resistor_SMD:R_0402_1005Metric | R5 |
| 1 | 40MHz | Crystal:Crystal_SMD_TXC_7M-4Pin_3.2x2.5mm | Y1 |
| 1 | ANT_PCB_2.4G_15.2MM | RF_Antenna:Texas_SWRA117D_2.4GHz_Right | ANT1 |
| 1 | ESP32-C3 | Package_DFN_QFN:QFN-32-1EP_5x5mm_P0.5mm_EP3.45x3.45mm | U1 |
| 1 | IA0503S | Package_TO_SOT_SMD:SOT-23-5 | PS1 |
| 1 | LED_0603_B | LED_SMD:LED_0603_1608Metric | LED1 |
| 1 | NC | Capacitor_SMD:C_0402_1005Metric | C16 |
| 1 | USB_C_16P | Connector_USB:USB_C_Receptacle_Palconn_UTC16-G | J1 |
Questions
How big is the C3 mini PCB?
It measures 25.4 × 34.2 mm and has 2 copper layers, 1.6 mm thick.
What parts does the C3 mini use?
32 parts, built around the ESP32-C3. 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 C3 mini KiCad files?
From the sergiomd4/wemos-c3mini-clone repository on GitHub, at the commit this page was made from: the board is Hardware/C3_mini.kicad_pcb and its schematic Hardware/C3_mini.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the C3 mini design in my own project?
Its repository publishes it under the CC0-1.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
Similar boards
- 4 layers90 × 50 mm
Greenmobi bms
G-Pereira/greenmobi-bms
A VESC compatible battery management system
141 parts31CERN-OHL-S-2.0 - 8 layers35 × 35 mm
OpenAIO
OpenDrone-hw/OpenAIO
Open-source AIO for 2-6S toothpick quads: flight controller, 4-in-1 AM32 ESC and ExpressLRS receiver, 25.5x25.5 mm.
343 parts19CERN-OHL-S-2.0 - 4 layers40 × 30 mm
- 2 layers30 × 18 mm
- 2 layers45.7 × 21.3 mm
- 2 layers70 × 54 mm
- 4 layers12.7 × 22.3 mm
