Has anyone figured out how to work other I2C devices (particularly hats) with the Clusterhat aboard a Pi 3B+?
I'm trying to use the Argon 40 fan hat for my Pi. It uses the I2C to control fan speed and the Pi's shutdown and reboot modes. The Clusterhat works perfectly well plugged in and the fan works perfectly well plugged in. However, when I plug both in (Pi on Bottom -> Fan Hat -> Cluster on Top), the Clusterhat won't respond. I've used jumpers to make the connection between the two hats, but it still wouldn't work.
The blue LED and red LED stay lit (blue is dim). But I can't control the zeros and the Hat isn't seen by my 3B+ at all.
From my experience with Arduino, I'm under the impression that there can be multiple devices on the I2C bus as long as they have separate IDs.