Homebrew PCBs

Stefan Trethan <stefan_trethan@...> writes:
> If you are interested in the more economical version, this is it:
> <http://s5.tinypic.com/9ghpxj.jpg>

I thought about doing something like that.  The problem was, I needed
a specific temperature (the film says 240F), and had no way of
measuring the actual temperature in the laminator.  The advantage of
using a thermocouple with the MAX chip is that it tells me *actual*
temperature, in degrees.  No need to calibrate the dial - just turn it
until the right number shows up, and the chip keeps the laminator at
*that* temperature.

I had tried just hacking the temp sensor in the laminator by putting
things between it and the roller to make the rollers run hotter, but I
had no way of knowing if it was working or not.

Of course, my way cost me about $50 in parts :-P