Have you ever dreamed of being a Jedi or Sith of the Star Wars universe, swinging a powerful Lightsaber to support your own side? Whatever the answer might be, here it is: How to make a DIY Lightsaber with µChip

First, let me specify that I intend to make a low cost, scaled and portable Lightsaber, closer to a “Lightdagger” rather than the full size Lightsaber you typically see in the Star Wars movies. I want to take advantage from the compact size of µChipto make an ultrathin Lightsaber, with tremble effects (which I can also use as outdoor light in case of necessity).

Since µChipfeatures a DC/DC buck converter capable of delivering up to 1A current at 5V or 3.3V, I will power my dagger directly from the micro‑USB connector on µChip, while connecting the LEDs to the generated VEXT pin. Thus, I only need to connect a micro-USB cable to program/power the Lightsaber and I can choose whether to give 3.3V or 5V to the connected LED strip.

I use a WS2812B LED strip as light source. It has a series of WS2812B ICs, which integrate 3 LEDs (RGB) and a driver. A specific (but well known) serial protocol must be used to drive the ICs and you can find it here. There are different strips, each characterized by different LED density and package. 100 LEDs/m and packaging IP30 fits perfectly for this project. The high LED density guarantees that the Lightsaber will be bright enough, while the package is the one without any silicon protection such that it fits inside the tube I use as the frame for my Lightsaber.

The frame I use for my project is a recycled antistatic IC tube; it is compact and transparent, besides it perfectly fits both the light source (WS2812B strip) and the controller (µChip), protecting all the components while giving rigidity to the dagger.

I used packaging foam as light diffuser; mine comes from the packaging of an LCD monitor.

Finally, as power source, any power bank that delivers at least 1A will do the job.

Here are the simple steps to build the Lightsaber.