Adafruit 1.2" 4-Digit 7-Segment Display w/I2C Backpack - Red

The backpacks 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 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 fully tested and assembled LED backpack
• Ultra-bright 4-digit 1.2" tall red seven-segment display
• 5-pin header

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.

Measurements after you mount the screen:

• 50mm/2" wide
• 120mm/4.7" long
• 13mm/0.5" high
• This board/chip uses I2C 7-bit addresses between 0x70-0x77, selectable with jumpers.

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