What's better than a single LED? Lots of LEDs! A fun way to make a small linear display is to use two 12-bar Bi-color bar-graphs. However, this LED bargraph is 'multiplexed' - so to control all the 48 LEDs you need a lot of pins. There are driver chips like the MAX7219 that can help control a bar-graph/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 colorful bargraph without tons of wiring? That's where this adorable LED bar-graph backpack comes in. Much like our 8x8 and 7-segment backpacks, this backpack pairs perfectly with our bar-graphs and manages all the LED control and multiplexing.
The backpack uses a driver chip that does all the heavy lifting for you: It has a built in clock so it can multiplex the display. It uses constant-current drivers for ultra-bright, consistent color, 1/16 step display dimming, all via a simple I2C interface. The backpack comes with address-selection jumpers so you can connect up to eight of these bar-graphs on a single I2C bus. You can also mix-and-match the bar-graph breakout with our other types of I2C LED backpacks.
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!
Bi-Color (Red/Green) 24-Bar Bargraph w/I2C Backpack Kit (4:37)
El Makey Makey es un kit de creación interactiva que convierte prácticamente cualquier objeto común en diferentes teclas táctiles con lo que se puede ...
Varios colores. Longitud 30cm. 2 unidades de cada ...
Este portapilas esta diseñado específicamente para la placa BBC Micro:bit y tiene un cable de 150mm con el conector ...
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 ...
Incluye La placa Micro:bit V2 y el robot Maqueen El Maqueen es un robot de programación ...
Este robot es muy accesible para estudiantes de primaria y secundaria. Maqueen Plus V2 no sólo es adecuado para la enseñanza en el aula, sino que también se puede utilizar para ejercicios extraescolares ampliados y competiciones de ...
Cable USB estándar de 15 cm. de largo. ideal para la placa ...