How can I make a USB driven heating element? Answered
How can I make (if it is even possible) a heating element that runs off usb, and produces enough heat to burn a (tiny) piece of wood to the point of producing smoke?
The biggest load you can put on a USB circuit without asking for power is 5/0.1 or 50 Ohms. Wind yourself a 50 Ohm resistor out of thin nichrome wire and see what it will do.
As steve says, half a watt isn't much power, but it can get hot if it's not heating much thermal mass.
By tiny piece of wood do you by chance mean herbal vapourizer?
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The biggest load you can put on a USB circuit without asking for power is 5/0.1 or 50 Ohms. Wind yourself a 50 Ohm resistor out of thin nichrome wire and see what it will do.
Steve
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