2 layers100 × 90 mm
2 layers12.7 × 36.2 mm
C3-mini
McbeEringi/pcb-stuff2- Size
- 12.7 × 36.2 mm
- Copper layers
- 2
- Thickness
- 0.8 mm
- Parts
- 13
- Nets
- 36
- Pads
- 106
- Tracks, vias
- 116, 54
- Pours
- 82
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 5 Jul 2023
- Updated
- 27 Oct 2026
Overview
C3-mini is an open-source printed circuit board by McbeEringi, from the McbeEringi/pcb-stuff repository on GitHub, published under the MIT licence. It is a 2-layer board of 12.7 × 36.2 mm with 13 parts on 36 nets, routed with 116 tracks and 54 vias.
It is built around the ESP32-C3-MINI-1, LM1117MP-3.3 and WS2812C. Its parts include 4 connectors, 3 resistors and 3 ICs. It belongs with the ESP32 and RISC-V boards of this library.
Main components
3ESP32-C3-MINI-1
--40℃~+81℃ -89dBm 2.4GHz 350mA 3V~3.6V 82mA ESP32-C3 Chip On-board PCB Antenna UART - WiFi Modules ROHSRF CrazyWiFi Modules
LM1117MP-3.3
SOT-2230℃~+125℃@(Ta) 1 1.2V@(800mA) 15V 3.3V 5mA 75dB@(120Hz) 800mA 99uVrms Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
WS2812C
SMD5050-4P-25℃~+65℃ 0.6mA 1.57mm 3.7V~5.3V 5.4mm 5mm 800Kbit/s B:465nm~475nm、R:620nm~630nm、G:515nm~525nm Built-in power-on reset circuit、Built-in power-on reset circuit、Built-in one-way transmission function G:400mcd~600mcd、R:150mcd~200mcd、B:100mcd~150mcd SMD5050-4P RGB LEDs(Built-in IC) ROHSWorldsemiRGB LEDs(Built-In IC)
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R2, R3 |
| 2 | Conn_01x08_Pin | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2, J4 |
| 2 | LOGO | LOGO | G***, G*** |
| 1 | clipboard:0cc91ec2-0069-494b-bf66-8693916d34c6 | ||
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R1 |
| 1 | Conn_01x01_Pin | Connector_PinHeader_2.54mm:PinHeader_1x01_P2.54mm_Vertical | J3 |
| 1 | ESP32-C3-MINI-1 | PCM_Espressif:ESP32-C3-MINI-1 | U4 |
| 1 | LM1117MP-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U2 |
| 1 | USB-C | Library:USB-C | J1 |
| 1 | WS2812C | Library:WS2812C-2020 | U3 |
Questions
How big is the C3-mini PCB?
It measures 12.7 × 36.2 mm and has 2 copper layers, 0.8 mm thick.
What parts does the C3-mini use?
13 parts, built around the ESP32-C3-MINI-1, LM1117MP-3.3 and WS2812C. 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 McbeEringi/pcb-stuff repository on GitHub, at the commit this page was made from: the board is proj/esp/c3-mini/c3-mini.kicad_pcb. 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 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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