What's better than a single LED? Lots of LEDs! A fun way to make a small display is to use an 8x8 matrix or a 4-digit 7-segment display. Matrices like these are 'multiplexed' - so to control all the seven-segment LEDs you need 14 pins. That's a lot of pins, and there are driver chips like the MAX7219 that can control a matrix for you but there's a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn't it be awesome if you could control a matrix without tons of wiring? That's where these adorable LED matrix backpacks come in. We have them in two flavors - a mini 8x8 and a 4-digit 0.56" 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial.
The matrices use a driver chip that does all the heavy lifting for you: They have a built in clock so they multiplex the display. They use constant-current drivers for ultra-bright, consistent color (the images above are photographed at the dimmest setting to avoid overloading our camera!), 1/16 step display dimming, all via a simple I2C interface. The backpacks come with address-selection jumpers so you can connect up to four mini 8x8's or eight 7-segments (or a combination, such as four mini 8x8's and four 7-segments, etc) on a single I2C bus.
The product kit comes with:
A bit of soldering is required to attach the matrix onto the backpack but its very easy to do and only takes about 5 minutes.
Of course, in classic Adafruit fashion, we also have a detailed tutorial showing you how to solder, wire and control the display. We even wrote a very nice library for the backpacks so you can get running in under half an hour, displaying images on the matrix or numbers on the 7-segment. If you've been eyeing matrix displays but hesitated because of the complexity, his is the solution you've been looking for!
El Makey Makey es un kit de creación interactiva que convierte prácticamente cualquier objeto común en diferentes teclas táctiles con lo que se puede ...
La BBC micro:bit v2 es una computadora de bolsillo que te permite ser creativo con la tecnología digital. ¡Puedes codificar, personalizar y controlar la micro:bit desde cualquier lugar! Puedes usar tu micro:bit V2 para todo tipo de ...
Este kit incluye: Micro:bit V2 Cable USB corto Portapilas para 2 pilas AAA 2 pilas ...
El Robot Maqueen para Micro:bit de DFRobot está diseñado específicamente para fomentar el interés de los niños en la ciencia y el pensamiento lógico a través de la educación STEM. ...
Incluye La placa Micro:bit V2 y el robot Maqueen El Maqueen es un robot de programación ...
Cable USB estándar de 15 cm. de largo. ideal para la placa ...
Utiliza este kit para convertir tu Maqueen y Maqueen Plus en un Escarabajo Mecánico! El kit Maqueen Mechanic-Beetle incluye un servo metálico, piezas mecánicas, tornillos, etc. Con una simple instalación, tu coche Maqueen estará listo para ...
Equipa tu Maqueen con este kit Mecánico para que pueda simular el movimiento de una carretilla elevadora! Prográmalo para que levante un objeto, baje una horquilla y traslade objetos, igual que una carretilla elevadora real en una fábrica. ...