Hi,
I wanted to run 4 motors (rated 5-10 volts) using 2 H-Bridges. I had an arduino UNO board connected via USB to my computer and 10 AA batteries connected in series and plugged into a bread board. I also connected the 5 volt pin from my arduino into the breadboard. The motors all worked fine for about a second then it all stopped. The lights on my arduino were still on but none of the motors were moving. I measured the output of the 10 batteries to be 13.5 volts. I tried re-uploading the code to the arduino board but got the error message:
avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x4e
Problem uploading to board.
I unplugged all the pins from the arduino and tried uploading from a different computer and the same problem occurs. I also tried uninstalling and reinstalling the arduino IDE but still the same problem.
Any suggestions would be great, Thanks.