Looks great, Mike!!!!
Hey, Steve, wouldn't it be better to have a thermally-controlled cut-off switch for the gas flow? Basically, the ignitor would stay energized until X degrees F or C, then shut off because the thermal fuel switch would kick in and keep the fuel flowing. If the temp fell below X, the fuel switch would cut the flow of gas.
We have one of those tank-top heaters that attaches to a 20# propane tank. I can press the fuel valve button and use the piezo to ignite, but if I let the button go before X temp is reached (meaning the flame has been burning steadily), the fuel is cut off. Similar?
Chuck