How to generate heat (36 - 43 degree)?

Forum 2005-2010 (read only) Hardware Interfacing
1

Hello, I'm thinking of using a temperature controlled wearable actuator for a new project. It should be stapped onto the skin and heat up depending on certain states. I believe I should make use of some heat generating device and, as I don't want to burn someone, some temperature sensor to realize this.

Unfortunately I don't have an ideo how to generate the heat. Is there any way to heat up some small sheet of metal? How would I do that? What would be the least energy consuming way?

Thanks for your help!

2

maybe a small Peltier element:

But i think that current consumption is a problem.

Or something like this:

http://www.goldmine-elec-products.com/prodinfo.asp?number=G16346

3

i would use 36Ohm 600mW resistors with a current of less than 90mA...

a good heat insulation around the circuit helps to distribute the heat evenly...

-arne

4

Yes, of course.

The simple solution sometimes is the best :slight_smile:

5

Here is a link to flexible heaters. I suppose wearing solid blocks will be incomfortable. These heaters need to be powered say by a transistor so that arduino doesn't have to provide the power, just a voltage.
Hope this helps.
http://www.minco.com/products/heaters.aspx?id=73