Hi, I'm currently doing a project using my arduino uno r3 and the official Arduino Motor shield r3.
Whenever I have the shield installed on top of my uno, it wont turn on at all, I've tried USB, an external power supply and both at the same time. The uno itself works fine when I dont have the shield installed. I tried going through the troubleshooting post with no solution matching my problem, I've also searched on google. Is there anything wrong with my shield, is there something I'm doing wrong?
pert:
Does the problem still occur with the Motor Shield plugged into the Uno, but with nothing at all connected to the Motor Shield?
Yes, it still wont turn on. While writing my post, I had a bipolar stepper motor connected to the 6pin terminal on the shield. After screwing the leads out, I still have the same problem. There's no LED's on the uno turning on while the shield is connected.
It does sound like there is a problem with your Motor Shield that is causing it to draw too much current from the USB port on the computer and the computer is shutting it off. Remove the Motor Shield from the Uno and do a visual examination of the solder joints on the top and bottom of the board. Do you see any places where excess solder has bridged the gap to another pin?
pert:
It does sound like there is a problem with your Motor Shield that is causing it to draw too much current from the USB port on the computer and the computer is shutting it off. Remove the Motor Shield from the Uno and do a visual examination of the solder joints on the top and bottom of the board. Do you see any places where excess solder has bridged the gap to another pin?
Can't seem to find anything wrong with the solder joints after inspecting both sides of the shield. Might plug in the board and test the different components with a meter.
Definitely worth a further inspection to see if you can find something that's drawing a ton of current.
If it's an official Arduino Motor Shield you just purchased, you can contact Arduino Store Support via this form to see what they can do for you:
The support staff will need to work with you to determine whether the board is eligible for a return so any information you can provide about the problem from the start will make that process go much faster.
Update: Couldn't find anthing suspicious on on the components with the meter. But the Uno + shield draws 0.2A @ 12VDC through the Vin/GND on the 6pin terminal and Uno + shield + sepper motor draws 0.3A @ 12VDC
The board is purchased from a distrubitor which is well known and sells original and official parts and equipment to private, buisness and government. I might just contact them about it and see what they can do for me as this might be a flawed product.