RGB 3-Color LED Module

This module puts a standard tri-color RGB LED onto its own small board with current-limiting resistors already built in, so it can be wired directly to three PWM-capable microcontroller pins without any extra components. Driving each of the red, green, and blue channels at a different brightness level lets a project mix practically any visible color, which makes it a simple way to add a status indicator that changes color to reflect different states, build a basic mood light, or learn the fundamentals of PWM-based color mixing before moving on to addressable LED strips. Because the resistors are already on the board, it is more forgiving for a first RGB LED project than wiring a bare LED by hand, where picking the wrong resistor value risks burning out one of the three color channels.