vermont castings, reporting in. i got pissed off at the shitty temperature regulation (literally burned a basketball sized hole in the cast iron one year) and built a complete temperature monitoring and control system with an esp32. i have thermocouples in the flue, catalytic converter and griddle top. overtemperature alarms. i welded together an outside air intake and 3d printed some parts to attach a butterfly valve driven by a servo so it has complete control and can shut itself down if there are any issues. i can also do it remotely from my phone and added a battery backup large enough to last a week. the biggest benefit aside from not melting itself down has been dramatically increased burn times per load. it is extremely efficient and clean burning now, when i turn it down for the night the cat temperature always maintains a perfectly steady 900 degrees. old picture but it shows the butterfly valve and servo attachment
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