Have fun and win via JLCPCB E-exhibition: https://jlcpcb.com/E-exhibition $2 for 4-Layer PCBs: https://jlcpcb.com Previous video: https://youtu.be/RoSIzgvEGtA Home Assistant video: https://youtu.be/IvI1RqYPO24 Power video: https://youtu.be/cxXmWZDwNEs Facebook: https://www.facebook.com/greatscottlab Twitter: https://twitter.com/GreatScottLab Support me for more videos: https://www.patreon.com/GreatScott?ty=h More project information (pictures, schematics,....) on Patreon: https://www.patreon.com/posts/esp32-power-43701117 Parts list: (affiliate links) ESP32: https://s.click.aliexpress.com/e/_AfKZrJ Current Transformer: https://s.click.aliexpress.com/e/_A661E9 Voltage Transformer: https://s.click.aliexpress.com/e/_Adyvfr Resistor Kit: https://s.click.aliexpress.com/e/_dTPpXjt Capacitor Kit: https://s.click.aliexpress.com/e/_d7dOwRz Websites which were shown in the video: https://learn.openenergymonitor.org/electricity-monitoring/ac-power-theory/introduction https://github.com/Savjee/EmonLib-esp32 https://esphome.io/index.html https://esphome.io/components/sensor/custom.html In this project I will show you how to build an ESP32 AC power meter that can be used with your home assistant setup. That means I will firstly explain how to actually measure and calculate real and apparent power along with the power factor and then I will show you how to use the ESP32 in combination with some complementary components in order to create the power meter. Let's get started! Thanks to JLCPCB for sponsoring this video. Visit https://jlcpcb.com to get professional PCBs for low prices. Music: 2011 Lookalike by Bartlebeats