This just started today: I can load my UNO by means of my USB connection but it wont play until I remove the USB and plug in a 5V power source. I switched the arduino but have the same problem. Normally I have my Arduino plugged into the computer for easy coding with a separate power source going to the LED panels that I am coding for? Any ideas what is happening? I am using the most recent IDE.
Your topic was MOVED to its current forum category which is more appropriate than the original as it has nothing to do with Installation and Troubleshooting of the IDE
Please post your code and a schematic of your project
+1
Hi All
It turned out to be low power from com3 port . A few reboots and it is now working.
Thanks
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