Featured project
Direct CN105 Control for Mitsubishi Mini-Splits
An ESP32-based CN105 interface connecting two Mitsubishi mini-splits directly to Home Assistant.
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- Project complete
Independent technical workshop · Northern Wisconsin
Useful systems, built where they live.
Frog Hill Labs documents practical electronics, radio, automation, software, and homestead technology through real projects and measured experiments.
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Article
Taking Mitsubishi Mini-Splits Local with CN105
How I built two local, bidirectional ESPHome controllers for Mitsubishi MSZ-FH12NA mini-splits—and discovered 12.48 volts on a connector pin commonly documented as unused.
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