My Smart Thermostat Runs Boiler, Mini-split, And Window A/c
Made by isaac-doyle-koch / Fire & Pyrotechnics / Home Automation / Kids & Family / Sustainability / Weather / IoT
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
Hardware components
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Software apps and online services
Story
Background
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.