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
Module with 6-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 9,10mm, red color (660nm), 6 mcd / seg (10mA), common anode, Pb-free. LED1-AS-B-03611BS
No product available!
7-segment LED display, 1 digit 9.90mm, red color (660nm), 6mcd / seg (10mA), common anode, Pb-free. LED1-AS-B-03911BS
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
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 0.56 "LED display. Built-in HT16K33 controller allowing communication via I2C bus. Equipped with STEMMA QT connector. Adafruit 5603
4-digit 7-segment 0.56 "LED display. Built-in HT16K33 controller allowing communication via I2C bus. Equipped with STEMMA QT connector. Adafruit 5602
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
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
7-segment LED display, 1 digit 25.4mm, yellow color (592nm), 20mcd (10mA), common anode, Pb-free. LED1-AS-B-10016BMY
Module with a 4-element 14-segment display. The board is equipped with a Qwiic connector and communicates via the I2C interface. SparkFun COM-18566
LED display 14,20mm 0,56 "single, ultra-red (635nm), 40 mcd (20mA), common anode. LED1-AS-05613BMR-B PBF
No product available!
7-segment LED display, 1 digit 7mm, green color (570nm), 4000 ucd (10mA), common anode, Pb-free. LED1-AS-B-02811BG
No product available!
This is the Green Adafruit 0.56" 4-Digit 7-Segment Display w/ FeatherWing Combo Pack! We also have these combo packs in Blue, Red, White, and Yellow! Adafruit 3107
No product available!
Module with a 4-element 14-segment display. The board is equipped with a Qwiic connector and communicates via the I2C interface. SparkFun COM-16917
7-segment LED display, 1 digit 30.60mm, black background green (575nm), 20mcd (10mA), common anode, red (630nm), 20mcd (10mA), common anode. Pb-free. LED1-AS-B-12011BMRMG
4-digit 7-segment display with MAX7219 driver chip. Adafruit 1269