Suggestions on wiring PCA9685 i2c + TB67H303 motor ic
5 Minute Design Review


Why is DC 2200uF cap before diode instead of after?
verify is Ft232R correct for pin numbers and connected unused handshaking inputs to the correct level.
why is there no UVDC detection or DC OK?
How will you test this to debug? With an external loop back?  Self test? What happens when something fails ? where do you start looking? Or do you want it to tell you the status?  we call this DFT !


How will you isolate radiated and conducted ground current noise? What dV/dt , dI/dt and CMRR do you expect?  For example crosstalk to RC1,2,3,4.