Uranium glass oscillator

cults3d

I created my version of uranium glass oscillator, drawing inspiration from an amazing Instructable project at https://www.instructables.com/id/U-M-R-O-Uranium-glass-marble-ring-oscillator/. Deciding to make a 3D printable case and incorporate it into my Borg costume from Star Trek was the next step. Adjusting the capacitor and resistor value allows you to change the frequency. I used a 1uF capacitor and 200k resistor for reasonably slow rotation, but using 100k and 0.1uF will increase the frequency. The transistors I utilized are 2N2222, while the LED's are 400nm UV 5mm LED. The uranium glass component was purchased online. My piece was part of a key ring, with a bead diameter of 19mm. If your item is larger or smaller, you can scale the model to achieve a perfect fit.