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usb heater? Answered

okay so my plan is to build a usb heater for the contest, so it can heat up coffe, hot chocolate, of tea. i am wondering if there is another way of building this than to use a cpu and resistors.

any information will help.


3 Replies

Re-designBest Answer (author)2010-06-04

Use a resistance coil build out of nichrome wire. You'll have to figure out the length that will draw 100 ma. at 5 volts, which is the most that is safe to draw from a usb unless you design it per usb specs.

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Hackrtanman (author)Hackrtanman2010-06-18

what about an old hair straightener? would that work?

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