Make your battery-powered devices smart using this simple hack. Last year, I made my Christmas trains smart – this year, it’s Santa’s turn. And the whole thing only took about 10 minutes.

Now everything is controlled by presence/radar-based automations: the Christmas tree, candles, trains, and Santa’s phone-booth snow globe.

RF remote and 3-12v wireless relay: https://a.aliexpress.com/_EyL3BXe
ESP32 DevKit: https://a.aliexpress.com/_EwVZblj
RF transmitter and receiver boards: https://a.aliexpress.com/_EvCDl0d
ESPHome config:
Receiver: https://esphome.io/components/remote_receiver.html
Transmitter: https://esphome.io/components/remote_transmitter