Phoenix Gee<p>Finally at v1 of my <a href="https://mstdn.social/tags/cloudless" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>cloudless</span></a> <a href="https://mstdn.social/tags/HVAC" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HVAC</span></a> thermostat.</p><p>Hardware cost: about $40 per system </p><p>Features:<br>- Runs on ESP32<br>- Secure Boot v2 with signed firmware <br>- Wifi connected (no Internet access)<br>- Hardcoded safeguards in the firmware<br>- Controlled via <a href="https://mstdn.social/tags/HomeAssistant" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>HomeAssistant</span></a><br>- Interfaced via <a href="https://mstdn.social/tags/MQTT" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>MQTT</span></a><br>- Thermostat logic is a containerized service<br>- Backend configuration UI for HVAC base settings<br>- Supports OTA firmware updates via API<br>- Open Source</p><p>Github? Codeberg? Not sure...<br>tbc</p><p><a href="https://mstdn.social/tags/homeautomation" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>homeautomation</span></a> <a href="https://mstdn.social/tags/NoMoreEcobee" class="mention hashtag" rel="nofollow noopener" target="_blank">#<span>NoMoreEcobee</span></a></p>