New to Arduino. Have a project that involves three relay shields (Vellman 100 + (3) Vellman 400's. Question: How best to power up all (4) boards. Do I use a Wall Wart and run to each board in parallel, or do I power up the Arduiino Uno and then daisy chain the +5 V dc to each of the (3) relay shields? Or does it matter which.
DTS USA, Reading MA Sept 17, 2017