Content originally posted in LPCWare by frame on Tue Oct 30 08:18:59 MST 2012
[I][B]The voltage is ok,it's curious that if I put another lpc in the bot, it works fine.
[/B][/I]
That is an indication, but no proof. Current consumption can vary for individual IC's,
as well as with temperature and age.
[I][B]While testing the lpc in my system (a sumo bot) a led started blinking ...
[/B][/I]
This suggests motor drives. Do you supply this from USB ?
If so, I would switch to a separate power supply. You might get strange effects if the current consumption
exceeds the capability of the USB port somewhere during runtime.
As further step,I would disconnect the external periphery one by one, and measure the current consumption then.
And I would run the application in the debugger, to see what the controller is up to while he pulls that much current.
Or include debug output to narrow down the issue.