There is a diode between Vusb and 5V.http://arduino.cc/en/uploads/Main/ArduinoNano30Schematic.pdfI don't know what that IC does, but if it doesn't limit the current to those LEDs (I'm betting on, it doesn't) then you may have drawn enough current to damage that diode.While connected to USB, I would measure the voltage across both sides of the diode.
Shouldn't the resistors I have drop the current enough to prevent that kind of damage?
Quote from: Jumbosize on May 10, 2013, 02:41 amShouldn't the resistors I have drop the current enough to prevent that kind of damage?No, I didn't see the resistors. my bad.I'd still check to see if the diode is damaged, that's the gate between the regulator/5V pin and Vusb.
Okay, I will. However, do you know where it might be located? because if it is on the underside I have no way to get to it since my nano is directly soldered in place.
Am I here?Like I said in Reply #2:Look to see if there is 5V at the 5V pin when it's plugged in to the USB connector.If there's not then that diode is shot.
Plug your Nano into the USBGet out your voltmeter.If you don't measure 5V with the positive lead on "5V" and the negative lead on one of the Nano's "Gnd" terminals then that aforementioned diode is b-a-d.
Yes I saw your first post Runaway Pancake and I guess you didn't see my response where I said I wasn't sure what you were asking...
DVDdoug:I'm not really sure what you're trying to say... I see the portion of the schematic your referring to but what am I supposed to do with this? Sorry...