I simplified it for the diagram. Its all setting on a proto shield with a common ground. This should be acceptable? No? Except I am powering the Arduino with USB not the external 12v. Trying to eliminate the need for the PC...
I simplified it for the diagram. Its all setting on a proto shield with a common ground. This should be acceptable? No? Except I am powering the Arduino with USB not the external 12v. Trying to eliminate the need for the PC...