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1  Using Arduino / General Electronics / Re: LM2576-5.0 problem ... on: May 02, 2011, 05:40:09 am
I've used LM2576 twice and never had problems with it. Very easy to get it work.
At the first time I made some tests, and with 2A it does not heat much.

Have you tested with some other load than your servos?
2  Using Arduino / General Electronics / Re: Some kind of electronic switch on: April 26, 2011, 07:06:47 am
.........I think for a 1k series resistor anything between 10k and 100k should work fine.

The Aussie Shield: breakout all 28 pins to quick-connect terminals

I disagree. If the 1k resistor is changed to 100k and the other one is 47k, then the current from the output is 34 uA causing only 1.6 V to gate. With 1k, the current is 0.1 mA and gate voltage 4,9 V. Much better.

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