5V + 9V external power fried my motor/board?

Other Hardware Motors, Mechanics, Power and CNC
1

Hello,

I have an ardumoto shield attached to my arduino uno, with which I control a DC motor. Everything was working fine, the motor turned on when I pressed a button and with a pot meter I was able to set the motor speed. Then I wanted to upload a new code to arduino so I plugged in the 5V while the 9V was also connected, then I uploaded the code. I don't know what happened, but suddenly the motor is receiving power at random moments, without me pressing the button and while according to the code it should not run. So the motor is running at random speeds and intervals without me controlling it. Can I solve this? Or did I fry something? If so, what?

Thanks!

2

Sorry, it sounds like you may have fried something. A schematic, not a frizzy drawing with all interconnections, power, grounds etc would help find your problem. You mention 5V and 9V, and you plugged them in, to what? How is it wired? At this point we have nothing to really work with. To determine go back to the basic blink sketch and work your way up from there to be sure you did not fry the Arduino or any of its pins.

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