Recent Blog Posts

LED Ping Pong Ball Display

Looking to build a large LED display project  David Vogt came up with this magnificent LED Ping Pong Ball display.

Because this project was for high school students it needed to be easy to assemble without advanced electronics skills.  It also needed to be budget friendly.

Early in the design it was decided to use ping pong balls to diffuse the LEDs.  This set the spacing of the LEDs to […]

Scrolling LED Sign

Armin Rehberger made an awesome, colorful, scrolling LED sign.

This bright animated sign uses 4 8×32 LED-pixel matrixes and scrolls not only horizontally but vertically as well.  It’s controlled using a Teensy 4.0 and uses the OCTOWS2811 library.

With a sign as bright as […]

IBM Model M Keyboard Restoration

Thea “Stargirl” Flowers restored this non-working IBM Model M keyboard by creating all new electronics.

The electronics are replaced by this custom circuit board.

On Twitter, […]

Propane Powered Lightsaber

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 […]

High Resolution Budget Polarimeter

A team of research scientists including John de Mello, A.J. Harvie, and T.W. Phillips have developed a low-cost, high-accuracy polarimeter that uses a Teensy 3.6.

In the study released in Scientific Reports, the team reveals the inspiration for the project as well as their DIY approach to creating the plans for a […]

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