Sam Freeman writing at Make: covers a Halloween mask by Sebastian Staacks of There Oughta Be that swaps faces using LED grids. The mask uses two 128×64 LED matrixes driven by a Raspberry Pi Pico 2 W, mounted to a face shield with magnets, zip ties, and 3D printed brackets. Worn with a black hood, it lets him switch from one character to another on the spot.

The tradeoffs: the wearer sees through a narrow slit, and 3A of current runs millimeters from his face.

The staff that goes with the costume is the harder build. It also runs on a Raspberry Pi Pico 2 W and a USB power bank, and it carries controls and an accelerometer for changing settings while wearing the mask. A Bluetooth speaker on his belt handles sound. The write-up on his blog lists part numbers and assembly steps for anyone wanting to build one.

See the video below and more at makezine.com.