"Jim Wilkins" wrote in message ...

"RogerN" wrote in message
snip

This project came about because of the price of propane, I want to have
an alternative if the propane runs out while the price is outrageous.

RogerN

Don't forget to allow for the faults the Arduino can cause, like shutting
off all the heat.
jsw

If all else fails I'll just plug the heaters in and adjust the thermostats
manually, and if the breaker trips, I'll have to reset it, at least for the
10 minutes it takes me to program and swap out the Arduino! If the crash if
from a software glitch, I may have to run in manual mode a bit longer :-)

RogerN