Quote:
Originally Posted by yorkie_chris
I'd use an atmega328
Link the ADC to a variable resistor or some sort of lo-hi-off 3 way switch, then one or two mosfets to control it through pwm
You might also want to look at arduino, it's a slightly higher level programming language. I've been using C for some diving stuff and to be honest it's giving me indigestion. By the time you've finishd you might wish you'd spent the $70... will be fun though!
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Sounds like vast overkill for a heated vest. Just use a variable duty cycle oscillator (ICM7555?) and a high current FET switch. If you're not warm enough turn up the duty cycle.