LEGO 4x4 Battery Base with Switch (LED)

thingiverse

I designed this circuit to fit snugly on a standard 4x4 plate, leaving ample space for both a switch and a reliable button cell battery. In my demonstration setup, I utilized a hot needle to carefully melt two small openings in the 4x4 plate, threading the LED leads through them. Once secure, I effortlessly connected these leads to the battery and switch using minimal wire, completing the circuit with ease.