I’m trying to work out a bus system for a long string of PCA9685. Normally, these are attached to my Arduino from the 5 volt pin. Will they still take command information from a 3.3v bus, or do I need to do something else?
Thanks,
Chris
They do accept 3.3 IO, see https://learn.sparkfun.com/tutorials/sp … e-overview
There are several ways to configure the units, just go through the relevant sections a couple times and verify your setup as you go