Adafruit Bi-Color (Red/Green) 12-LED Bargraph

Make a small linear display with multiple colors using this elegant bi-color LED bargraph. Only 1.2" long, it is quite visible but not so large it won't plug into a breadboard! 24 LEDs are contained in the plastic body, 12 red (30mcd) and 12 green (18mcd). Every bar has two LEDs inside, enabling the display of red, green, yellow, or, with fast multiplexing, any color in between.

This display is bright, beautiful, and funky with nice diffused rectangular lenses for a striking look. It features 14 pins, 7 on each side, with 0.1" spacing, which makes it easy to plug into a breadboard with plenty of space for wiring left over. Its compact design allows creative projects with efficient space management.

Since the display is multiplexed, it is recommended to use 3 PNP transistors to drive the anodes using microcontroller pins and a 74HC595 to drive the cathodes. Expand your knowledge with a playground article about bargraph displays for further exploration. Additionally, tutorials introducing matrices offer useful insights for driving a multiplexed bargraph effectively.