ESP32 ISO board

Board Pin Definitions

Version V2

Version V1

Pin Definitions Template

Pin Prerequisite Used for Note
36 input_only ~ lead-out  
39 input_only ~ lead-out  
34 input_only ~ lead-out  
35 input_only ~ lead-out  
32   IN1 via jumper
33   IN2 via jumper
25 DAC IN3 via jumper
26 DAC IN4 via jumper
27   OUT1 via jumper
14   OUT2 via jumper
12 strapping ~ lead-out  
13   I2C  
15 strapping I2C  
2 strapping ~ lead-out  
0 strapping ~ lead-out  
4   OUT4 via jumper
16   U2  
19   VSPI  
17   U2  
5 strapping VSPI  
18   VSPI  
20   OUT3 via jumper
21   U1  
3 U0R U0  
1 U0T U0  
22   U1  
23   VSPI  

breakout daughter board

Use Guide

  • connect IO0 to GND to enter into programming mode

ref

Demo video

  • RS485 / RS422 / RS232 / CAN brekaout board with ESP32 ISO Board test - youtube here.