relay

Using the Shelly Plus Plug S to measure homelab power

I’m using a Shelly Plus Plug S smart plug to measure the power usage of my homelab. I added it as a device in Home Assistant — and the power readings began! Kind of… Within a few days; I noticed …

Wi-Fi relays for controlling ventilation — WeMos D1, MQTT, and Home Assistant

We recently got balanced ventilation installed, and I have interfaced it with Home Assistant. However — the ventilation unit have three “special modes” that can not be enabled through the Modbus …

Making a WiFi MQTT controlled relay for Home Assistant

Making a single relay controlled with WiFi MQTT from Home Assistant, using WeMos D1 mini board.

Controller for lights and relays — AVR driven

Control three lights or relays, with toggle switches and status LEDs. Uses an AVR ATtiny2313 microcontroller.