My arduino was working fine until i accidentally shorted the 5v pin to the gnd pin, while running on USB power.
I can connect fine via usb with external power, and everything seems to be working fine, except the USB is no longer powering the board. I have to connect it to an external power source before the computer recognizes it. I guess I still feel lucky I didn't fry the entire thing. Am I pretty much SOL as far as the power goes though? What else should I check for to verify it's working properly?
I've also noticed that the load cap is generating a good deal of heat on external 5v (?!). The specs for it say it has an operating temp of 70c, so maybe it's normal, but I certainly didn't notice this much heat via usb power.
I've also noticed that the load cap is generating a good deal of heat on external 5v
The capacitor shouldn't get hot, the 70c rating is for ambient or when used in proximity to something else.
The only way a cap gets hot is if it is carrying a lot of ripple current or is reverse biased or has been damaged. It is something that should not be happening on a normal setup. Please check that the external power is DC and not AC and also it is not getting hot because the regulator next to it is getting hot.
@ Grumpy_Mike, I'm fairly certain that the external power is hooked up correctly. Of course, I wouldn't put any money on it... Pending suggestions from support, I'll post a pic of how the board is setup.
update: apologies, but it doesnt seem like I can get a mail to you guys for some reason!
mail bounces back with following message:
support@gravitech.us:
Sorry. Although I'm listed as a best-preference MX or A for that host,
it isn't in my control/locals file, so I don't treat it as local. (#5.4.6)