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
7-segment LED display, 1 digit 12.70mm, bright green (575nm), 15mcd / seg (10mA), common anode, Pb-free. LED1-AS-B-05011BMG
7-segment LED display, 1 digit 14,20mm, blue color (470nm), 12mcd (10mA), common anode, Pb-free. LED1-AS-B-23011BB
No product available!
Module with 4-digit 7-segment LED display. The board is equipped with a TM1637 driver and communicates via a digital interface
Module with a 4-element 14-segment display. The board is equipped with a Qwiic connector and communicates via the I2C interface. SparkFun COM-16916
4-digit 7-segment 0.56 "LED display. Built-in HT16K33 controller allowing communication via I2C bus. Equipped with STEMMA QT connector. Adafruit 5599
7-segment LED display, 1 digit 9.90mm, bright green color (470nm), 6000ucd (10mA), common anode, Pb-free. LED1-AS -03911BB-B
No product available!
7-segment LED display, 1 digit 30.60mm, bright red (630nm), 20mcd (10mA), common anode, Pb-free. LED1-AS-B-12011BMR
No product available!
7-segment LED display, 1 number 14,20mm, red color (640nm), 6000 ucd (10mA), common cathode, Pb-free. LED1-AS-B-05613AS
This is the Red Adafruit 0.56" 4-Digit 7-Segment Display w/ FeatherWing Combo Pack! We also have these combo packs in Green, Blue, White, and Yellow! Adafruit 3108
Module with 4-digit 7-segment LED display. The board is equipped with a TM1637 driver and communicates via a digital interface
Module with 4-digit 7-segment LED display. The board is equipped with a TM1637 driver and communicates via a digital interface
7-segment LED display, 1 digit 13.20mm, red (635nm), 24 mcd/se (10mA), common cathode, Pb-free. LED1-AS-05219AMR-B PBF
No product available!
Module with 8-digit 7-segment LED display. The board is equipped with a 74HC595 driver and communicates via a digital interface
8-digit, 8-segment LED display module with 16-level brightness adjustment. Communication via the I2C interface. DFRobot DFR0646-G
7-segment LED display, 1 digit of 56.80mm, red (660nm), 20mcd (10mA), common anode, Pb-free. LED1-AS-B-23011BMR
LED segment display that allows you to display six digits consisting of 7 segments and a dot. The color of the displayed digits is red, common anode
4-digit 7-segment display with MAX7219 driver chip. Adafruit 1269