Hi, I'm trying to power my project from an 18650 battery using an Adafruit MiniBoost to supply 5V, 1A - tested powering the 2 steppers and 1 solenoid from MiniBoost while Arduino is powered from computer USB and it's working.
Now I need to power Arduino from the MiniBoost and I'm having trouble understanding how that's going to work.
I want to be able to plug the USB for programming. My assumptions are:
•I don't want USB 5v flowing to the MiniBoost
•I don't want the USB 5v/Arduino trying to power the steppers & solenoid which pull 500mA - 1A if the 18650 is disconnected. (Would this damage the PC, Arduino, both? Or nothing, just not work?)
My guess is to add a diode between MiniBoost & 5v pin on the Arduino. Would this be the solution?