ESP32 ISO board

Board Pin Definitions

Version V2

Version V1

Pin Definitions Template

Pin Prerequisite Used for
36 input_only  
39 input_only  
34 input_only  
35 input_only  
32   IN1
33   IN2
25 DAC IN3
26 DAC IN4
27   OUT1
14   OUT2
12    
13   I2C
15 strapping I2C
2 strapping  
0 strapping  
4   OUT4
16   U2
17   U2
5 strapping VSPI
18   VSPI
19   VSPI
20   OUT3
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.