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1  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 29, 2012, 10:03:46 am
Thanks! Couldn't have done it without you, I appreciate the help.
2  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 28, 2012, 11:07:09 pm
Worked like a charm, thanks everyone!!
3  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 28, 2012, 02:00:12 pm
Awesome, thanks!
4  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 28, 2012, 12:09:17 pm
Any tips on desoldering the damaged surface-mount v.reg? I only have a soldering iron.
5  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 26, 2012, 01:16:35 pm
Thanks Zapro. This picture really highlighted the divot in the v.reg, I can barely see it in real life. smiley
I'll get some of those ordered asap.
6  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 26, 2012, 12:31:38 pm
Its the 2560, with an atmel chip. 
7  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 26, 2012, 11:32:44 am
It's an Arduino Mega.
8  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 26, 2012, 10:49:13 am
Yes sir, that's the plan. Thanks for your help. Do you happen to know if the 7805 is the one I want?
9  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 26, 2012, 10:34:43 am
Thanks Zapro, I just tested it and the voltage across the 5V was 3.09V.
Is it the 5V regulator?
10  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 26, 2012, 10:27:32 am
Something from the power supply did indeed smoke, but I later discovered that the polarity was reversed, which is what caused the problem.

It worked brilliantly the last few days, no problem at all. This morning however, any voltage going to the VIN pin turns on the Arduino, but the green light is really dim, as if it's not getting enough juice. Could this be a symptom of the earlier issue? Powered by USB, it works just fine.
11  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 24, 2012, 02:20:00 pm
Zapro: Yep its a NiMH pack. Super heavy, but it's got a lot of juice.

Oric_Dan: Where are the v.regs?
12  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 24, 2012, 12:18:06 pm
Exactly smiley
My big 9V has a Tamiya connector though so I had to make a custom connection.
13  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 24, 2012, 12:06:17 pm
In this situation, the battery's poles need to be hooked up opposite to the wire colors, or else you're sending opposite polarity into the arduino. The 9V connectors are a bit confusing that way. I'm going to switch to another method, but at the time this connector was already hooked up so it was the path of least resistance. Too bad it caused me so much grief.
14  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 24, 2012, 11:46:50 am
Maybe that's the case. I hope it will still lead a long and happy life. I'll replace it when I need to.
15  Using Arduino / General Electronics / Re: Current divide 9v battery on: December 24, 2012, 10:57:58 am
OMG, I hate to admit my shame, but here it is:
I solved it. Turns out since I had two 9v connectors hooked together, the polarity was getting reversed.

Danger! Danger!

Works perfectly now though, whew.
Thanks everyone for your help! Much appreciated.
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