As usual, I went with an ESP8266 of the Wemos Mini D1 variety, running NodeMCU. The firmware is very standard this time — the default options plus the PWM module. A Protocol for the NodeMCU Lamp ...

Say, you’re starting your electronics journey with a few projects in mind. You have an ESP8266 board like the Wemos D1, a Li-Ion battery, you want to build a small battery-powered sensor that ...