I’ve got an Arduino Uno Rev 3 and an Adafruit Motor Shield v2.3 on top of it. My design requires sending input to the Arduino (numbers). Therefore, I need to have the USB cable always connected to the Arduino. I’ve got also a stepper motor (8V @ 0.4A) which is connected to the Adafruit Motor Shield (M1 & M2).
Is this generally okay for the USB port and the Arduino/Shield to run only USB power?