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https://github.com/esp-rs/esp-rust-board

Open Hardware with ESP32-C3 compatible with Feather specification designed in KiCad
https://github.com/esp-rs/esp-rust-board

Last synced: 25 days ago
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Open Hardware with ESP32-C3 compatible with Feather specification designed in KiCad

Host: GitHub
URL: https://github.com/esp-rs/esp-rust-board
Owner: esp-rs
License: other
Created: 2021-11-10T08:28:14.000Z (over 2 years ago)
Default Branch: master
Last Pushed: 2024-02-20T10:14:29.000Z (5 months ago)
Last Synced: 2024-03-17T11:10:35.575Z (4 months ago)
Homepage: https://esp-rs.github.io/esp-rust-board/
Size: 14.1 MB
Stars: 417
Watchers: 19
Forks: 36
Open Issues: 7
Metadata Files:
- Readme: README.md
- License: LICENSE-CERN-OHL

Lists

awesome-esp-rust - esp-rust-board - A development board based on the ESP32-C3 and designed in [KiCad EDA](https://www.kicad.org/) which is compatible with the [Adafruit Feather](https://learn.adafruit.com/adafruit-feather/feather-specification) specification. (Open Hardware)

README

        # Rust ESP Board

Welcome to the Rust ESP Development board project. This repository contains everything you will need to build the board yourself.

## Where to buy

* [ESP32-C3-DevKit-RUST-1](https://www.espressif.com/en/products/devkits)

* [AliExpress Espressif Official Store](https://www.aliexpress.com/item/1005004418342288.html)

* [Mouser Electronics](https://www2.mouser.com/ProductDetail/Espressif-Systems/ESP32-C3-DevKit-RUST-1?qs=4ASt3YYao0WvXOj9TGjU2A%3D%3D)

## Ferrous Systems Training

* [Training Book: Explore the power of Rust on the new Espressif board](https://github.com/esp-rs/std-training)

  * [Training Material](https://esp-rs.github.io/std-training/)

## Project Specification

This board is based on the ESP32-C3, and includes sensors, LEDs, buttons, a battery charger, and USB type-C connector.

### SoC Features

* 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](https://www.espressif.com/sites/default/files/documentation/esp32-c3_datasheet_en.pdf).

![Diagram](assets/rust_board_v1.2_diagram.png)

### I2C Peripherals

This board includes the following peripherals over the I2C bus:

| Peripheral               | Part number | Reference                                                                                                      | Crate                                     | Address |

| ------------------------ | ----------- | -------------------------------------------------------------------------------------------------------------- | ----------------------------------------- | ------- |

| IMU                      | ICM-42670-P | [Datasheet](https://invensense.tdk.com/download-pdf/icm-42670-p-datasheet/)                                    | [Link](https://crates.io/crates/icm42670) | 0x68    |

| Temperature and Humidity | SHTC3       | [Datasheet](https://www.mouser.com/datasheet/2/682/Sensirion_04202018_HT_DS_SHTC3_Preliminiary_D2-1323493.pdf) | [Link](https://crates.io/crates/shtcx)    | 0x70    |

#### I2C Bus Connection

| Signal | GPIO   |

| ------ | ------ |

| SDA    | GPIO10 |

| SCL    | GPIO8  |

### I/Os

The following devices are connected through GPIO:

| I/O Devices | GPIO  |

| ----------- | ----- |

| WS2812 LED  | GPIO2 |

| LED         | GPIO7 |

| Button/Boot | GPIO9 |

### Power

* 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 Layout

![Pin Layout](assets/rust_board_v1_pin-layout.png)

#### Left Side

| 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      |

#### Right Side

| 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*

## Project KiCad Libraries

* [ESP32C3](https://github.com/espressif/kicad-libraries)

## Board Design

Top

![TOP](assets/esp-rust-board_top.jpg)

Bottom

![BOT](assets/esp-rust-board_bot.jpg)

## Bill of Material

[Interactive BOM](https://esp-rs.github.io/esp-rust-board/)

## Case

[Case 3D Printing Model](https://www.printables.com/model/288200-minimalistic-case-for-esp32-c3-devkit-rust-1)