An inexpensive Wi-Fi (b/g/n) microchip, the ESP8266, was released in December 2013. It is manufactured by Espressif Systems in China and has a full stack of TC/IP capabilities.
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Being able to properly wire up a physical switch or button and configure it in ESPHome is one of the fundamental things you should be able to do when planning projects.
Building a multisensor is one of the first things you should when starting off with ESPHome. The sensors are cheap, the wiring isn't complicated, and you get your first taste of creating custom firmware for an ESP8266 .
At its core, The ESP8266 is a low-cost Wi-Fi (b/g/n) microchip, released in 2013. With ESPHome, it can be used to read sensors, build lights, and more.
This volume knob uses a rotary encoder to control your music's volume and its firmware is written using ESPHome. An OLED screen displays the current track.