My Smart Thermostat Runs Boiler, Mini-split, And Window A/c
About the project
The project will start, control, and protect a wood-fired boiler, modulating according to outdoor temperature. It will control a mini-split to provide heat or cooling. It also controls a window A/C. Statistics are rendered on Blynk graphs. Control via Blynk and Node-Red dashboard.
Items used in this project
Software apps and online services
Wood is the most renewable and plentiful energy source in some places. But burning it can produce lots of smoke and ash. Enter a gasification boiler. It bakes the wood and burns the gases for very little smoke or ash. It's like carburetors versus fuel injection. Of course, a wood fire isn't so easy to turn on and off, and boiler must never overheat because they could explode. A mechanical thermostat, costing about $100, was the typical answer to the problem. But a post by David Hunt started me on a cheaper, "smarter" path.