Uranium glass oscillator

thingiverse

I created my version of uranium glass oscillator, inspired by an amazing Instructable project at https://www.instructables.com/id/U-M-R-O-Uranium-glass-marble-ring-oscillator/. I decided to make a 3D printable case and incorporate it into my Borg costume from Star Trek. You can adjust the capacitor and resistor values to alter the frequency. I used a 1uF capacitor and a 200k resistor to achieve a reasonably slow rotation, but you can increase the frequency by using a 100k resistor and a 0.1uF capacitor. The transistors I employed are 2N2222, while the LED's utilized are 400nm UV 5mm LED. The uranium glass component was purchased online; mine was part of a key ring with a 19mm diameter bead. If your uranium glass has a different size, you can scale the model to ensure a perfect fit. Check out this video for more information: https://www.youtube.com/watch?v=lxsjUPFW2kM