Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack - White

Key Features:

• Constant-current drivers for ultra-bright, consistent color
• Simple I2C interface
• Connect up to four mini 8x8' s or eight 7-segments
• 4-Digit 7-Segment Display & LED backpack

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. 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.

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.

Item Specifics
Fully tested and assembled LED backpack
1 - 4-digit 0.56" tall white seven-segment display
1 - 4-pin header
Uses I2C 7-bit address between 0x70-0x77, selectable with jumpers
Backpack Size: 27mm x 50mm x 4mm / 1.1" x 2" x 0.16"
Backpack Weight: 5.3 g
7-Segment Display Size: 19mm x 50mm x 14mm / 0.75" x 2" x 0.56"
7-Segment Display Weight: 8.4 g
Some soldering required