I’ve got a Servo Phat for Raspberry pi V2, with the USB-C power, I’m currently having a play with it and my Pi Zero 2 W
Is it possible to stack other hats or PHats on top? Is there anything I need to look out for if I do? I’m mostly wondering about the power it supplies to the PI and if that would be an issue for the other hats?
I’m also thinking of driving more servos, would I be able to stack another servo PHat, or would I be better off finding a different I2C or QWIIC servo controller?
One issue with that might be the controller address, the PHAT uses 0x40, can you alter that? It should be possible by pulling one of the other pins high.
Yep, you can stack 'em. Just ensure what you are stacking uses the same voltage levels and matching pins for power, gnd, etc
The main thing is the Pi Zero can only supply 1-1.5A max, so be sure you aren’t drawing more than that @ once
The board has its own power in, so that should be OK. What about the address of the controller? It appears to be hard wired at 040x how will the controller know which I’m talking to?
I must’ve skipped dover the hardwired address, I apologize
I think the only way would be to wire each board to a Mux https://www.sparkfun.com/products/16784 and then you can call the Mux addresses separately :-/ (that is to say, I don’t think they will actually worked while stacked…they’d need to each be wired)
Let me know if you have already ordered a 2nd one and/or if it won’t work for your needs now by going to Return Policy - SparkFun Electronics and filling out the form; we’ll get you taken care if need be 