It was almost impossible to make the blue LED [video]

Submitted ⁨⁨2⁩ ⁨years⁩ ago⁩ by ⁨bot@lemmy.smeargle.fans [bot]⁩ to ⁨hackernews@lemmy.smeargle.fans⁩

https://www.youtube.com/watch?v=AF8d72mA41M