Welcome to the Rust ESP Development board project. This repository contains everything you will need to build the board yourself.
This board is based on the ESP32-C3, and includes sensors, LEDs, buttons, a battery charger, and USB type-C connector.
- IEEE 802.11 b/g/n-compliant
- Bluetooth 5, Bluetooth mesh
- 32-bit RISC-V single-core processor, up to 160MHz
- 384 KB ROM
- 400 KB SRAM (16 KB for cache)
- 8 KB SRAM in RTC
- 22 × programmable GPIOs
- 3 × SPI
- 2 × UART
- 1 × I2C
- 1 × I2S
- 2 × 54-bit general-purpose timers
- 3 × watchdog timers
- 1 × 52-bit system timer
- Remote Control Peripheral (RMT)
- LED PWM controller (LEDC)
- Full-speed USB Serial/JTAG controller
- General DMA controller (GDMA)
- 1 × TWAI®
- 2 × 12-bit SAR ADCs, up to 6 channels
- 1 × temperature sensor
For the complete description, see the ESP32-C3 Datasheet.
This board includes the following peripherals over the I2C bus:
| Peripheral | Part number | Reference | Crate | Address |
|---|---|---|---|---|
| IMU | ICM-42670-P | Datasheet | Link | 0x68 |
| Temperature and Humidity | SHTC3 | Datasheet | Link | 0x70 |
| Signal | GPIO |
|---|---|
| SDA | GPIO10 |
| SCL | GPIO8 |
The following devices are connected through GPIO:
| I/O Devices | GPIO |
|---|---|
| WS2812 LED | GPIO2 |
| LED | GPIO7 |
| Button/Boot | GPIO9 |
- USB type-C (no PD compatibility).
- Li-Ion battery charger - MCP73831T-2ACI/OT, it charges up to 4.2V.
- Recommendation: MCP73831T-2ACI/OT does not provide battery protection for over-current or over-discharge. For the battery (Li-Ion or Li-Po), it's recommended the ones with embedded protection
- Limitation: reading the battery voltage is not supported.
| Pin Number | Description | SoC |
|---|---|---|
| 1 | Reset | EN/CHIP_PU |
| 2 | 3V3 | |
| 3 | N/C | |
| 4 | GND | |
| 5 | IO0/ADC1-0 | GPIO0 |
| 6 | IO1/ADC1-1 | GPIO1 |
| 7 | IO2/ADC1-2 | GPIO2 |
| 8 | IO3/ADC1-3 | GPIO3 |
| 9 | IO4/ADC2-0 | GPIO4 |
| 10 | IO5/ADC2-1 | GPIO5 |
| 11 | IO6/MTCK | GPIO6 |
| 12 | IO7/MTDO/LED | GPIO7 |
| 13 | IO9/LOG | GPIO8 |
| 14 | IO21/U0RXD | GPIO21 |
| 15 | IO20/U0TXD | GPIO20 |
| 16 | IO9/BOOT | GPIO9 |
| Pin Number | Description | SoC |
|---|---|---|
| 1 | VBAT | |
| 2 | EN [1] | |
| 3 | VBUS [2] | |
| 4 | NC | |
| 5 | NC | |
| 6 | NC | |
| 7 | NC | |
| 8 | NC | |
| 9 | IO18/USB_D- | GPIO18 |
| 10 | IO19/USB_D+ | GPIO19 |
| 11 | IO8/SCL | GPIO8 |
| 12 | IO10/SDA | GPIO10 |
- [1] Connected to LDO enable pin*
- [2] Connected to USB 5V*
Top
Bottom
