Wireless LEDs. That’s what [Scotty Allen] found in Japan, and if you find something you just have to replicate it. [Scotty] found these wireless LEDs in a display stand for model makers and gunpla.

[michimartini] over on Hackaday.io loves playing with multivibrator circuits, and has come across a simple example of a ring oscillator. This is a discrete transistor RC-delay design utilizing five ...