ESP32 Wire Board

Pin Definitions, Dimensions

• 

  Dimension

• 

  SCH1

• 

  SCH2

CAN / RS485

• Both CAN and RS485 communication functions based on UART
• Based on software serial UART - https://github.com/plerup/espsoftwareserial
• RS485 Test code - https://github.com/Edragon/Arduino-ESP32/blob/master/Sketchbook/interface/RS485-1/RS485-1.ino
• RS485 interface connected via IO16/IO17
• CAN interface connected via IO22/IO23
• Change the backside jumper for RS485 can switch to UART0 RXD0/TXD0, but it is used by USB-TTL bridge on ESP32 DEVKITC board.

Programmer LED and Power Supply Read

• One extra programmerable LED indicator – IO5
• One extra power supply voltage read – IO33