After reading the forum on using a PWM to control a boil kettle i decided to attempt to make my own. I ordered the parts Walker suggested and built the board following his diagram. After testing the circuit out however I find that the PWM is not operating. After hooking it up to a flashlight i expected to see it turn on and off as the pot turned up and down but nothing happened. The light stayed on regardless of where the pot was turned to except for when I turn the pot off then the light turn off. Not knowing anything about circuit boards I am not sure if I did something wrong or broke something so I was hoping someone could help me trouble shoot this. The only difference between the board I made and the one Walker used is that mine has two rows on the outside where as his had only one. (I used the inner row on each side)