did i fry my board?

Development Tools IDE 1.x
1

I have an UNO, with an adafruit motorshield connected. The UNO was connected to the USB, I had two servos connected to a 6v walwart. Just these cobined worked great, no problems. I connected a stepper to the shield and attempted to connect my variable DC supply to the shields EXT PWR terminal, but forgot to remove the jumper. Smoke was visible, and I know thats an Oh S%@# moment.

I hook up the UNO by itself, the ON light lights up, as well as the amber light next to the D13 pin, but usually the TX RX blink just when I hook up the USB, not anymore.

If it repairable, I would greatly appreciate a walk through.

if it is not, What can be salvaged?

Thank you!

2

http://forum.arduino.cc/index.php?topic=73748.0
Pass or fail?

3

I tried bringing up the serial monitor with that board Coding, and it didnt even register with my computer, I am thinking that it is toast! So if that is the case, would the Atmel still be good?

4

So if that is the case, would the Atmel still be good?

I assume you mean the ATmega328P processor. I wouldn't bother with it. Your time is far more valuable than a chip that costs less than $4.

Given this...

Smoke was visible...

...I say it's time for a new board. Toss the cooked one in the trash (or recycle bin).

5

I couldn't use it for a home made uno?

6

I couldn't use it for a home made uno?

The problem is that it could be damaged in subtle ways. You could face what appears to be a software bug only to discover that the analog-to-digital convert, for example, has been cooked. As I said, it's a question of time. If you want to spend time on a potentially damaged processor then do. In the best case you will end up with a "working" sacrificial processor. In the worst case it will end up in the trash.

If you do decide to play with the ATmega328P I suggest using something other than a computer (like a powered USB hub) to power it.

7

I appreciate the help. Thank you.