A lattice of microcontrollers, input mechanisms, and batteries is made of stiff but pliable solid-core copper wire and woven into the lining of a thick scally cap.
The raspberry pi operates in headless mode, and can be remotely connected to via Parsec.
A bank of four li-ion batteries hooked up to an Adafruit charging board provides power to the device
The raspberry pi is linked to an Arduino nano, and is able to reprogram the arduino as needed. It can also send commands during normal operation via an 12C serial bus.
For controls, the hat features a large, flexible FSR pad which can read tapping motions with excellent analog accuracy. A neopixel indicator ring around the sensor adds some pizzaz and additionally allows the sensor to be found blind as it will be worn while in use
Because the Pi can remote connect to any configured computer, the hdmi can be hooked up to any monitor and used to stream games, movies, etc as if it were a much more powerful machine, provided there is a strong internet connection.