That’s the idea behind [Julius Curt]’s visual timer for toddlers. This lovely reverse progress bar uses a Wemos D1 mini to control a strip of six WS2812B LEDs at 30 LEDs/meter density.
As far as ESP8266 boards go, the WeMos D1 Mini is a great choice if you’re looking to get started with hackerdom’s microcontroller du jour. It’s small, well supported, and can be had ...
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