SAKATA 3D PLA 850 filament is...
The Matrix module is an 8x8 white LED matrix. It's perfect for scrolling text on, displaying simple animations like smiley faces, or using as a tiny marble maze.
The Light module detects ambient light level. It's ideal for use in a weather station, keeping track of light levels in your greenhouse, or reminding you when you've left the lights on in your house.
The Joystick module is an analog joystick with a click button. It's ideal for using as a game controller, or to control a robot.