We’ve seen our share of light-up jewelry over the years, but for some reason — probably power — it’s almost always earrings or necklaces. So when we saw [ROBO HUB]’s LED ring, we had to ...

A terminal adapter can make the assembly even easier. We need the ESP32 board, a DS3231 module a Solid state relay, 1 or 2 optional LEDs (they can be bought ready precabled with the resistor) and a ...

Using NodeMCU ESP8266 for controlling switches (Relay). Uses RTC (Real Time Clock - DS3231) and NTP (Network Time Protocol) for maintaining time. OLED Display (128x64) for instant updates. A webserver ...