2 layers44.5 × 46.9 mm
OSO SWAT B1-jig
joeycastillo/Sensor-Watch
A board replacement for the classic Casio F-91W wristwatch
31 parts2.1k
2 layers70.5 × 64.8 mm
Smart Power Button
ChocolateLoverRaj/rust-esp32c3-examples15Examples with wiring diagrams for using some sensors with ESP32-C3, programmed with Rust
- Size
- 70.5 × 64.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 55
- Pads
- 126
- Tracks, vias
- 415, 15
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 4 Jan 2024
- Updated
- 25 May 2026
Overview
Smart Power Button is an open-source printed circuit board by ChocolateLoverRaj, from the ChocolateLoverRaj/rust-esp32c3-examples repository on GitHub, published under the MIT licence. It is a 2-layer board of 70.5 × 64.8 mm with 31 parts on 55 nets, routed with 415 tracks and 15 vias.
Its parts include 14 resistors, 7 ICs, 4 transistors, 4 connectors and 1 switch. It belongs with the ESP32 and RISC-V boards of this library.
README
README.mdProgramming ESP32-C3 with Rust
Examples with wiring diagrams for using some sensors with ESP32-C3, programmed with Rust
Materials Needed
- ESP32-C3 (I bought this one from AliExpress, and I recommend buying it from "TENSTAR ROBOT")
- USB Cable to connect the ESP32-C3 to your computer. You can use a USB-A to USB-C cable or a USB-C to USB-C cable, they both work.
- Project-specific materials
Try out the code
- Clone this repo
- Install Rust
- You may need to install some Rust stuff for ESP32-C3
- Plug in your ESP32-C3
- Make sure you have the permissions to access ESP32-C3 (
/dev/ttyACM0) cdto the directory you want to runcargo run
Supported Chips / Boards
This was originally only for the ESP32-C3, but it should be really easy to add support for other ESP32 chips / boards. Some examples already have support for the ESP32-S3 in addition to the C3, and there is one example for STM32, but it should be really easy to add support for other ESP32 chips / boards. Some examples already have support for the ESP32-S3 in addition to the C3, and there is one example for STM32. If you would like an example for a specific chip / board to be added, let me know. I have a ESP32-C3, ESP32-S3, and a stm32f103c8.
std vs no_std
On ESP32 chips you can use Rust with std or no_std. Originally, every project in this repo used std. At some point I switched to using no_std. I don't recommend using std anymore. The old examples still use std. If you would like a no_std version of an example that is currently std only, let me know.
On-demand Maintanance Mode
I want to maintain this repo to help people do stuff with their ESP32s. However, not all examples will be up to date. If there is an example that uses an out-of-date esp-hal version, is not working, or not working on your chip, or if you have a question, don't hesistate to create an issue.
Resources
This project is based off of these resources
Rust on ESP32-C3
- The Rust on ESP Book
- Embedded Rust (no_std) on Espressif
- https://github.com/ivmarkov/rust-esp32-std-demo
- https://github.com/shanemmattner/ESP32-C3_Rust_Tutorials
Project-specific resources
Can be found in the README.md files in folders
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | PC817 | Package_DIP:DIP-4_W7.62mm | U1, U2, U3, U4, U5, U6 |
| 4 | 107 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R3, R4, R5, R6 |
| 4 | 1540 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R8, R9, R11, R12 |
| 4 | 2N3904 | Package_TO_SOT_THT:TO-92_HandSolder | Q1, Q2, Q3, Q4 |
| 4 | 330 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R7, R10, R13, R14 |
| 2 | 191 | Resistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1, R2 |
| 2 | Male Header | Connector_PinHeader_2.54mm:PinHeader_2x04_P2.54mm_Horizontal | J3, J4 |
| 1 | 20-Pin ATX | KiCad Assets:CONN_2-1586041-0_TYCO | J2 |
| 1 | ESP32-C3_SUPERMINI | KiCad Assets:MODULE_ESP32-C3_SUPERMINI | U7 |
| 1 | Female Header | Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Horizontal | J1 |
| 1 | LOGO | LOGO | G*** |
| 1 | SW_SPST | KiCad Assets:SW_RB141C1100 | SW1 |
Similar boards
- 2 layers65 × 30 mm
Rgb to hdmi
hoglet67/RGBtoHDMI
Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI
31 parts1kGPL-3.0 - 2 layers191 × 98.5 mm
MacroKeypad
hackclub/OnBoard
💡 Join 1,000 teenagers and make your first PCB with a $100 grant!
31 parts915 - 2 layers39 × 45.2 mm
CH32V003F4P6-R0-1v1
openwch/ch32v003
CH32V003 is an ultra-cheap RISC-V MCU with 2KB SRAM, 16KB flash, and up to 18 GPIOs that sells for under $0.10
31 parts599 - 2 layers26.7 × 27.9 mm
Breakout board
Luos-io/luos_engine
Open-source and real-time orchestrator for cyber-physical-systems, to easily design, test and deploy embedded applications and digital twins.
31 parts546MIT - 2 layers100 × 50 mm
Pixelix
BlueAndi/Pixelix
Full RGB LED matrix, based on an ESP32 and WS2812B LEDs or emulated LEDs on TFT.
31 parts447MIT - 2 layers77.2 × 69.8 mm
- 2 layers103 × 55 mm
Questions
How big is the Smart Power Button PCB?
It measures 70.5 × 64.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Smart Power Button use?
31 parts. 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 Smart Power Button KiCad files?
From the ChocolateLoverRaj/rust-esp32c3-examples repository on GitHub, at the commit this page was made from: the board is smart-power-button/KiCad PCB/Smart Power Button.kicad_pcb and its schematic smart-power-button/KiCad PCB/Smart Power Button.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Smart Power Button 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).