This allows him to make a ring of LEDs in parallel that will slide nicely over the soldering iron and integrate into the plastic case. To power it, he’s made a small diode bridge to rectify the ...

Essentially, this is a 3D printed ring with SMD LEDs painstakingly soldered together in parallel along a pair of thin copper wires. The ring itself is in two parts: a base, and a cover to diffuse ...