

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
LED display: 25.40mm 1.00 "single, red (660nm), 12 mcd / seg (10mA), common anode, Pb-free, replacement TOS-1106BH-B, TOS-1106BS-B. LED1-AS-10016BS- B
No product available!
LED display 25.40mm 1.00 "single, green (570nm), 12mcd (10mA), common anode, replacement for TOS-1106BG-B. LED1-AS-10016BG-B
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
7-segment LED display, 1 digit 20.40mm, two dots, blue color (470nm), 4000ucd (10mA), common anode, Pb-free. LED1-AS-B-08012BB
7-segment LED display, 1 digit 20.40mm, two dots, bright red (630nm), 20 mcd (10mA), common anode, Pb-free. LED1-AS-B-08012BMR
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
7-segment LED display, 1 digit 38.10mm, amber (605nm), 15,000ucd (10mA), common anode, Pb-free. LED1-AS-B-15011BMA
No product available!
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. Adafruit 881
LED segment display that allows you to display four digits consisting of 7 segments and a dot, the display can also display a colon. The color of the displayed digits is red
Module with 4-digit 7-segment LED display. The board is equipped with a TM1637 driver and communicates via a digital interface
LED Display 25.40mm 1.00 "single, red (635nm), 20 mcd / seg (10mA), common anode, Pb-free, replacement for TOS-1106BMR-B. LED1-AS-10016BMR-B
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 8-segment LED display. Communication via the SPI interface. Waveshare Pico-8SEG-LED
Candy-bar sized 4-digit seven-segment bright crisp display good for adding numeric output. Besides the four 7-segments there is a top right dot (useful as a degrees symbol) and two sets of colon-dots (for time-based projects). Adafruit 1264
7-segment LED display, 1 digit 20.40mm, red color (630nm), 6 mcd (10mA), common anode, Pb-free. LED1-AS-B-08011BS
Design a clock, timer or counter into your next project using our pretty 4-digit seven-segment display. These bright crisp displays are good for adding numeric output. Besides the four 7-segments, there are decimal points on each digit and an extra wire for colon-dots in the center (good for time-based projects). Adafruit 1001
4-digit 7-segment display with MAX7219 driver chip. Adafruit 1269