☢ Tourmaline negative ion Quantum pendant - Test 2

I added a CD4026-based 7 segment counter to my prototype Geiger counter. Here I am testing the dodgy tourmaline Quantum pendant, which as you can see is somewhat radioactive.
My Geiger counter uses an STS-5 Geiger Muller tube and can detect beta & gamma radiation. I'm hoping to build the project on a tailor-made PCB using EasyEDA and JLCPCB. Please follow me on Twitter and Instagram for posts on this project.
Twitter: @ChrisElison
Instagram: @ChrisElison
Website: chriselison.uk/

[@LightVortexMatrixStudy]

Oxide is the Key

[@rodriguezfranco3839]

What the hell a radioactive pendant? Lol who would wear that 😂😂

[@deanagoes2791]

Stupid people.

[@raiillusion205]

Di jual itu bos?