Connect 2 Unipi board to 1 CPU
My requirement need to use double of the number of UniPi I/O port.
Can I use UniPi as 2nd I/O extension board without 2nd Raspberry PI?
If yes, How to connect the 1st UniPi board to 2nd UniPi board.
- 1 Wire as red line color or
- I2C Wire as blue line color
Unfortunately this is not possible. The DIs are connected direclty to GPIOs of RPi and besides that the i2c devices have the same address on both UniPis so they colide...
Get one more RPi and do it on the SW layer.