HACKSMITH Industries have produced the world’s first retractable plasma-based lightsaber.

The lightsaber is controlled by a Teensy 4.0 and powered by LPG (compressed liquid propane gas) mixed with oxygen. The resulting plasma burns at 4000 degrees Fahrenheit and is able to cut through titanium. This powerful combination was made using a bespoke circuit design that you can find and inspect on the DigiKey site.

Hacksmith Industries has an active YouTube channel where you can find more of their ambitious builds.