petrockblog
Keymaster
Post count: 1827

Ok. a next step could be to check if we can manually communicate with the GPIO expander components (The two black block in the middle of the ControlBlock).

They are using a communication interface that is called I2C. What is the output of the commands

sudo i2cdetect -y 0
sudo i2cdetect -y 1

?

These commands look for any attached I2C device.