I2C on Lilygo T-Relay CH8

ESPHome
1

Hi,

I have this code running on ESP32 DevKit 4


I/O expander hub definition
mcp23017:
   - id: 'mcp23017_hub'
     address: 0x20
#nodemcu devkit v4.0
i2c:
   sda: 21
   scl: 22
   scan: True
   frequency: 200kHz

how I can “translate it” to use with Lilygo T-Relay CH8

image
image724×641 123 KB

2

Not sure what you mean by translate. What are you trying to interface with via i2c?

3

Yes sir,

how I can define I2C
with the DevkitCmv4 I’m using GPIO21 and GPIO22, based on the documentation

image
image1265×593 143 KB

can I select any IO I want to define SDA abd SCL?