README.md
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


<![CDATA[]]>ESP32-C3-DevKit-RUST-1<![CDATA[]]>
<![CDATA[]]>AliExpress Espressif Official Store<![CDATA[]]>
<![CDATA[]]>Mouser Electronics<![CDATA[]]>


Ferrous Systems Training


<![CDATA[]]>Training Book: Explore the power of Rust on the new Espressif board<![CDATA[]]>


<![CDATA[]]>Training Material<![CDATA[]]>



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 <![CDATA[]]>ESP32-C3 Datasheet<![CDATA[]]>.



I2C Peripherals

This board includes the following peripherals over the I2C bus:




  
Peripheral
  
Part number
  
Reference
  
Crate
  
Address




  
IMU
  
ICM-42670-P
  
<![CDATA[]]>Datasheet<![CDATA[]]>
  
<![CDATA[]]>Link<![CDATA[]]>
  
0x68


  
Temperature and Humidity
  
SHTC3
  
<![CDATA[]]>Datasheet<![CDATA[]]>
  
<![CDATA[]]>Link<![CDATA[]]>
  
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



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


<![CDATA[]]>ESP32C3<![CDATA[]]>


Board Design

Top



Bottom



Bill of Material

<![CDATA[]]>Interactive BOM<![CDATA[]]>

Case

<![CDATA[]]>Case 3D Printing Model<![CDATA[]]>