Adafruit has this week announced the arrival of a new Neo Trinkey – SAMD21 USB Key equipped with 4 NeoPixels providing a small PCB is designed to slip into any USB A port on a computer or laptop.

Everyone loves NeoPixels. Individually addressable RGB LEDs at a low price. Just attach an Arduino, load the demo code, and enjoy your blinking lights. But it turns out that demo code isn’t very ...