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they have a built in clock so they multiplex the display. They use constant-current drivers for ultra-bright, consistent color, 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 fully tested and assembled LED backpack (uses I2C 7-bit addresses between 0x70-0x77, selectable with jumpers)
Ultra-bright 4-digit 0.56" tall white seven-segment display
4-pin header
Note: 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.
This website uses cookies, which are necessary for the technical operation of the website and are always set. Other cookies, which increase the usability of this website, serve for direct advertising or simplify interaction with other websites and social networks, will only be used with your consent. More information
