Adafruit Small 1.2\" 8x8 LED Matrix w/I2C Backpack - Blue

Adafruit Small 1.2\" 8x8 LED Matrix w/I2C Backpack - BlueWhat'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 64 LEDs you need 16 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

you can build in a quick connect/disconnect power port in between your sections of LEDs

5V tolerant

This wire is 500 cm long which is the maximum that can be driven by our handy 2xAA portable pocket inverter The full length draws 200mA from the 2xAA batteries (so 2000mAh batteries will last ~10 hours if on 'constant' mode)

extended it to the size of a mint tin and turned that into a beautiful PCB

A simple ECG amplifier

The PCB comes stuck on the shield

Maximum temperature differential (Tmax @ Qc = 0): 66°C

reef-pi Guide 1: Setup and Demonstration

and synchronize data

They are open-drain

Note: This case only works with the Raspberry Pi 1 Model B+ or Pi 2 Model B

Equipped with a 2mm JST connector