Raspberry Pi Pinout

Four Letter pHAT

Four Letter pHAT is a four 14-segment display that can be used to display text, numbers, and a host of other characters. Its Matrices are a retro-style green, similar to old digital alarm clock and are driven by the HT16K33 chip over I2C.


  • Four 14-segment displays
  • HT16K33 driver chip
  • Compatible with Raspberry Pi A+/B+, 2, 3 and Zero/Zero W

To get the pHAT set up and ready to go you can use the one-line product installer:

curl https://get.pimoroni.com/fourletterphat | bash


Four Letter pHAT