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Raspberry Pi 4 picture from: https://projects.raspberrypi.org/en/projects/raspberry-pi-getting-started
What is a Raspberry Pi 4?
A Raspberry Pi is a low cost, credit-card sized computer that can be plugged in to a monitor or TV. It uses a standard keyboard and mouse. Raspberry Pi is used for learning how to program in languages like Scratch and Python.
RGB LED HAT for Raspberry Pi
RGB LED HAT for use in the Makerspace:
RGB LED HAT can be easily attached on top of the Raspberry Pi to display colorful effect, and controlled by only one signal pin.
Supports any revision of Raspberry Pi (directly-pluggable)
Onboard 4 × 8 RGB LED (WS2812B)
Control pin is configurable via jumpers (0Ω resistor)
Break out control pins, easy for working with other MCUs