Solar-Powered Outdoor Thermometer with Multiple DS18B20 Sensors

I’ve been pretty happy with how my ESP8266-powered outdoor thermometers turned out.  One of these has two sensors — one to measure ambient temperature, and one to measure the temperature of a hot tub.  It’s solar-powered (with an 18650 Li-Ion battery), uses a single GPIO pin, and never needs charging! DS18B20 Temperature Sensor DS18B20s* are […]

Using a Milight remote with HomeAssistant

Milight sells 2.4 GHz remotes* for quite cheap (~$12) which can be used to control Milight bulbs*. They also make in-wall panels* that do the same thing. These work quite well, but if you’re using something like HASS, you’ll end up with stale state. For example, if you turn lights on with the remote, that […]

Milight WiFi Gateway Emulator on an ESP8266

Milight bulbs* are cheap smart bulbs that are controllable with an undocumented 2.4 GHz protocol. In order to control them, you either need a remote* (~$13), which allows you to control them directly, or a WiFi gateway* (~$30), which allows you to control them with a mobile app or a UDP protocol. A few days […]