This matrix has 1024 total LEDs (512 red and 512 yellow) arranged in a 16×32 grid on the front. On the back there are two IDC connectors (one input, one output: you can basically chain these together) and each panel has 4 x HT1632 matrix scanning processors on the back to manage the display mutliplexing. Note that while you can dim the entire panel to one of 16 brightnesses, you cannot individually dim LEDs to create color gradiants. But,the good news is once you write the LED on/off settings you want, the multiplexing is done for you. These displays are ‘chainable’ – connect one output to the next input and add an extra chip-select wire per extra panel
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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.