Stacking AutomationHat?

Hi - newby building a 4 stepping motor rig and would like to know if I can stack an Automation Hat on top of two Adafruit stepper cards on a Pi 3?

If so - what IC2 address does I use?

You can see the pins (and i2c addresses) Automation HAT uses here:

If any of these conflict, then you wont be able to stack it directly (unless it’s a conflict of two features you don’t mind losing) but you might be able to wire it piecemeal.

Thanks Phil - I’ll give it a go and see what happens.

Appreciate the quick response.

Were you able to get stacked automation hats working?

If so, I’m curious how the interface package would address each board…

You can’t stack two automation hats. Not directly anyway. They will just conflict with each other. They will both be trying to use the same i2c addresses.
You would have to use something like this.
TCA9548A I2C Multiplexer – Pimoroni
Even then, there are all the other GPIO pins used to contend with, relay, input, output.