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What's better than a single LED? Lots of LEDs! A fun way to make a numeric display is to use a 4-digit 7-segment display. LED 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 for a variety of 8x8 and 7-segment displays. They work perfectly with the displays we stock in the Adafruit shop and make adding a bright display trivial.
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.
Data sheet
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
4-digit 7-segment LED display, 1.2" diagonal, with a built-in controller allowing communication via the I2C bus connected to the Stemma QT/Qwiic connector. Red display. Adafruit 1270
4-digit 7-segment display with MAX7219 driver chip. Adafruit 1269
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No product available!
Michał Lisowski
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No product available!
LCD 4x12, 37x48.5mm, LED backlight (RGB), FSTN, 5.88x2.90mm character
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No product available!
HK 5.8GHz Circular Polarized Antenna SMA (Set) (Short) (43700)
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The case is made of ABS, designed for Raspberry Pi Zero W minicomputers. The user has free access to all minicomputer ports, including the GPIO connector
No product available!
SUPERLUMISATION MODULE 3x3LED GREEN 20mA LED - KIT FOR INDEPENDENT INSTALLATION
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Camera with a resolution of 2 MPx with a USB interface. Equipped with an OV2710 CMOS sensor with a movable IR filter and IR LED lighting. ArduCam B0205
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Kit with Raspberry Pi Zero 2 WH with soldered connector, official accessories and Waveshare USB hub
No product available!
The set allows introducing distance, ambient lighting and gesture analysis into the subject using the VL6180X sensor. NUCLEO-L053R8 plate in set with VL6180X expansion board. P-NUCLEO-6180X2
No product available!
No product available!
3-pin ARK mounting strip, 5.0 mm pitch. 300-5.0-03P-12-00A(H)
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Universal power supply module working on the basis of four 18650 batteries. It offers DC outputs with voltages of 9 V, 12 V, 24 V and adjustable in the range from 1 to 20 V, as well as two USB 5 V outputs. DFRobot FIT0674
No product available!
No product available!
4-digit 7-segment display with MAX7219 driver chip. Adafruit 1268