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Can i use Arduino uno Vin port and its usb port simultaneously? Answered

Im fairly new to this. I need to have the arduino connected to my computer as it is receiving commands through a java script application. 
the arduino then sends signals to a few servo's that i was going to power using an external battery. I was just wondering whether i then connect this battery to arduino's vin port (considering that is already powered on using the usb?). 

I hope this makes sense.

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steveastrouk

4 years ago

NO.

Connect the GROUND of the battery to the PI, DO NOT CONNECT THE +VE TERMINAL.

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verencesteveastrouk

Answer 4 years ago

+1

Connect the ground terminal to give both parts the same 0V level, but never connect two supply pins.