This Halo replica features Bluetooth-controlled NeoPixels.
If you’re a fan of Halo, at some point you’ve probably thought that having an energy sword would be a good idea. For better or worse, you can’t obtain one of these weapons (yet), but the Ruiz Brothers at Adafruit have come up with the next best thing: a 3D-printed replica that uses programmable LED strips to make it glow.
These strips are controlled by an Adafruit Feather 32U4 Bluefruit LE (ATmega32U4), enabling them to be programmed for excellent effects, like changing colors and powering on the lights in a sort of slow powerup pattern. Since this Feather has Bluetooth capability, the sword can even be controlled with a smartphone with no physical access to the board.
Besides Bluetooth, another neat feature of the Feather is that it has a battery charging circuit built-in. This allows the sword’s 2000mAh lithium-ion battery to be charged without adding any additional hardware. A switch is, however, added to turn the unit off when the owner isn’t busy pretending to pwn noobz with it.
The blades are printed with transparent PLA, and the sword, including the handle, is made in 20 sections attached together with super glue. Despite its 34-inch blade, it impressively weighs under one pound.
If this all seems a little familiar, you might recall either of the Ruiz brothers’ Daft Punk helmet builds — you can find more info on Thomas’ helmet replica here.