Productbeschrijving
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. Here at Adafruit we feel your pain! After all, 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. We have them in two flavors - a mini 8x8 and a 4-digit 0.56" 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial.
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.
This board/chip uses I2C 7-bit address between 0x70-0x77, selectable with jumpers
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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. Here at Adafruit we feel your pain! After all, 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. We have them in two flavors - a mini 8x8 and a 4-digit 0.56" 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial.
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.
This board/chip uses I2C 7-bit address between 0x70-0x77, selectable with jumpers
Merk | Adafruit |
Inhoud | 0.56 inch 4-Digit 7-Segment Display w/I2C Backpack Blauw adafruit 881 |
Introductie jaar | 2022 |
Leeftijd | |
EAN | 9509379337461 |
Sku | 4439091 |