The multifunctional ESP8266 smartwatch can be built for less than $20 and is capable ... Besides this the button present on the watch can control another ESP8266 Relay module directly through ...

When we first heard about it a few weeks ago, we knew the ESP8266 UART to WiFi module was a special beast. It was cheap, gave every microcontroller the ability to connect to a WiFi network, and cou… ...

The PCB holds a Wemos D1 Mini connected to two relays that switch the two heating circuits. The D1 runs ESPhome and needs just a few lines of configuration to connect it to [Simon]’s home network.