The Sonoff POW is a very interesting device for Home Automation. It costs only 10$ and can measure power, transmit it to your server, and switch 110/220 volt devices. <br />I hack it and implement my own code. I also test the measurement results and give hints, how to improve them.<br />I also include a library for the HLW8012 Power Meter Chip for the ESP8266.<br /><br />Itead Recall: <a href="https://www.itead.cc/blog/sonoff-th16-and-pow-recall-notice" target="_blank" rel="nofollow">https://www.itead.cc/blog/sonoff-th16-and-pow-recall-notice</a><br /><br />Links:<br />Code and Sonoff POW library: <a href="https://github.com/SensorsIot/Sonoff-POW" target="_blank" rel="nofollow">https://github.com/SensorsIot/Sonoff-POW</a><br />WiFi Manager (forked): <a href="https://github.com/kentaylor/WiFiManager" target="_blank" rel="nofollow">https://github.com/kentaylor/WiFiManager</a><br />Remote Debug: <a href="https://github.com/JoaoLopesF/RemoteDebug" target="_blank" rel="nofollow">https://github.com/JoaoLopesF/RemoteDebug</a><br />Solve Equations: <a href="https://www.youtube.com/watch?v=AvSXCQi75i0" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=AvSXCQi75i0</a><br /><br /><br /><br /><a href="https://www.facebook.com/profile.php?id=100013947273409" target="_blank" rel="nofollow">https://www.facebook.com/profile.php?id=100013947273409</a><br /><a href="https://twitter.com/spiessa" target="_blank" rel="nofollow">https://twitter.com/spiessa</a><br />...<br /><a href="https://www.youtube.com/watch?v=hv_FpBqWFrg" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=hv_FpBqWFrg</a>