NEW PRODUCT – Bi-Color (Red/Green) 12-LED Bargraph [BL-AR12Z3010DUG-11]
NEW PRODUCT – Bi-Color (Red/Green) 12-LED Bargraph [BL-AR12Z3010DUG-11]. 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 wont plug into a breadboard! 24 LEDs are contained in the plastic body, 12 red 30mcd and 12 18mcd green. Every bar has two LEDs inside so you can have it display 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. There are 14 pins, 7 on each side, with 0.1″ spacing so you can easily plug it into a breadboard with plenty of space for wiring left over.
Since the display is multiplexed we suggest using 3 PNP transistors to drive the anodes with microcontroller pins and then a 74HC595 to drive the cathodes.
There is a playground article about bargraph displays but that one is for non-multiplexed displays. You should also check out the tutorials introducing matrices for ideas on how to drive a multiplexed bargraph.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.