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Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack - White [ADA1002]

4.5 4.5 out of 5 stars 101 ratings
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Amazon's Choice in LED Segment Displays by Adafruit

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Eligible for Return, Refund or Replacement within 30 days of receipt
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White

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Color White
Brand Adafruit
Item Weight 0.02 Kilograms
Number of Ports 1
Item Package Quantity 1

About this item

  • Constant-current drivers for ultra-bright, consistent color
  • Simple I2C interface
  • 4-Digit 7-Segment Display & LED backpack
  • Connect up to four mini 8x8's or eight 7-segments

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Adafruit 0.56" 4-Digit 7-Segment Display w/I2C Backpack - White [ADA1002]


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Product Description

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. 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.

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.

Item Specifics
Fully tested and assembled LED backpack
1 - 4-digit 0.56" tall white seven-segment display
1 - 4-pin header
Uses I2C 7-bit address between 0x70-0x77, selectable with jumpers
Backpack Size: 27mm x 50mm x 4mm / 1.1" x 2" x 0.16"
Backpack Weight: 5.3g
7-Segment Display Size: 19mm x 50mm x 14mm / 0.75" x 2" x 0.56"
7-Segment Display Weight: 8.4g
Some soldering required

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
101 global ratings

Customers say

Customers like the ease of assembly, performance and quality of the LED segment display. For example, they mention it works great, the included backpack is easy to install and the build and functional quality of it is spot-on. That said, opinions are mixed on brightness.

AI-generated from the text of customer reviews

22 customers mention18 positive4 negative

Customers find the LED segment display easy to assemble. They mention that the three pieces are very straight forward to use, drive, and enable. They also say the included backpack is easy to install and makes working with the display. Customers also say that the library for the product is easy use via their website and easy to hook up on a Raspberry Pi. They say the display is bright and easy control with the ESP8266.

"...The Adafruit_LEDBackpack library works fine and is very easy to write data using the Adafruit_7segment class...." Read more

"...Other than that, it's extremely straightforward to use, and played nicely with my other I2C items on my arduino." Read more

"...Soldering it wasn't that hard either, just be sure you follow the instructions on the website to connect it in the right position first before you..." Read more

"...The included backpack is easy to install and makes working with the display (using their library) a piece of cake...." Read more

20 customers mention20 positive0 negative

Customers are satisfied with the performance of the LED segment display. They mention that it works great with a Raspberry Pi and Arduino Uno to make a clock, stopwatch, and pretty. It's straightforward to use and plays nicely with other I2C items on their board. The Adafruit_LEDBackpack library works fine and is very easy to write data using it. The I2c interface works as expected, and the display works like a charm. It has not failed yet.

"...This has been turned on continuously for the whole duration and has not failed yet. I am using it to display the current temperature of my area code...." Read more

"...Other than that, it's extremely straightforward to use, and played nicely with my other I2C items on my arduino." Read more

"I ordered this on a Saturday and received it on Sunday. Works great." Read more

"...The included backpack is easy to install and makes working with the display (using their library) a piece of cake...." Read more

9 customers mention9 positive0 negative

Customers are satisfied with the quality of the led segment display. They mention that the build and functional quality of it is spot-on, it looks sharp, and is a great tool for use with the Raspberry Pi. Some appreciate the appearance of the white display.

"...I like the appearance of the white display. My only complaint is the lack of a bezel mount adapter...." Read more

"Nothing but high-quality products from Adafruit at a reasonable prices. Assembled in USA" Read more

"...The display looks great. I bought the display in advance of the actual Arduino project...." Read more

"Great tool for use with the Raspberry Pi. Helps my students (and me) figure out, and troubleshoot code, and work with I/O devices." Read more

3 customers mention3 positive0 negative

Customers find the led segment display to be a cool tinkering toy. They also say it's fun to play with and easy to use.

"Pretty cool and easy to program. They did a good job putting this 4x7-Segment display together with an HT16K33 chip in the backpack...." Read more

"Fun to play with and easy to use. I was not expecting to have to solder everything together but that is not a big deal at all." Read more

"Adafruit goodies are a little more expensive, but they're pretty cool and they work!!" Read more

9 customers mention6 positive3 negative

Customers are mixed about the brightness of the LED segment display. Some mention that it's very bright, while others say that even the lowest setting is too bright. The LEDs are bright, making the display hard to see in the sun.

"...The display is bright and was easy to control with the ESP8266...." Read more

"...This thing is BRIGHT. like, brighter than any 7 segment display I've ever seen...." Read more

"Great product from Adafruit. The LCD is bright and visible from a distance...." Read more

"...to many other segment displays available on Amazon, this one is much brighter than others that I tried...." Read more

Working flawlessly for the last 7 months
5 Stars
Working flawlessly for the last 7 months
I have been using this Display for the last 7 months. This has been turned on continuously for the whole duration and has not failed yet. I am using it to display the current temperature of my area code. The display is bright and was easy to control with the ESP8266. However, there is some soldering required to completely assemble the display.SOLDERINGThis product came in two pieces. One was the display matrix (the display part where you see all the glowing digits) and a backpack (that contains the HT16K33 chip.) The backpack makes hides the complexities of controlling the display matrix so that you can only use 2 pins to control the display + 2 pins of power. However, backpack and display matrix needs to be soldered together. You would have to solder 18 pins to get the display matrix and backpack together.VOLTAGEI have been using nodeMCU which operates at 3.3 V and it is working fine. Adafruit's web site mentions that this can be powered with 3.3 or 5 V.PIN CONNECTIONSOnce you have the matrix and backpack connected, you can control the display with I2C (Inter-Integrated Circuit) protocol. This means you have to use only two pins for controlling the display. You would still have to provide power to the display. On the top of the display there are four pins.Pin marked as SCL in back (C in front) is the clock pin. This needs to be connected to the Clock/SCL pin on your microcontroller. On Node MCU this is D2 pin, on the Uno this is A4Pin marked as SDA in back (D in front) is the data pin. This needs to be connected to the SDA/data pin on your micro-controller. On Node MCU this is D1 pin, on the Arduino Uno this is A5Pin marked as GND in back (- in front) is the round pin.This needs to be connected to any of the GND pins on your micro-controller.Pin marked as VCC in back (+ i front) is the voltage pin. This needs to be connected to the pin marked as 3.3v or 5V on your micro-controller.SOFTWARE LIBRARYI have been using nodeMCU to control the display. The Adafruit_LEDBackpack library works fine and is very easy to write data using the Adafruit_7segment class. The Adafruit_7segment.print, draw methods let me write HEX or Base 10 numbers to the display. Adafruit_7segment.drawColon would control the colon on the display.
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Top reviews from the United States

Reviewed in the United States on September 30, 2017
Color: WhiteVerified Purchase
Customer image
5.0 out of 5 stars Working flawlessly for the last 7 months
Reviewed in the United States on September 30, 2017
I have been using this Display for the last 7 months. This has been turned on continuously for the whole duration and has not failed yet. I am using it to display the current temperature of my area code. The display is bright and was easy to control with the ESP8266. However, there is some soldering required to completely assemble the display.

SOLDERING
This product came in two pieces. One was the display matrix (the display part where you see all the glowing digits) and a backpack (that contains the HT16K33 chip.) The backpack makes hides the complexities of controlling the display matrix so that you can only use 2 pins to control the display + 2 pins of power. However, backpack and display matrix needs to be soldered together. You would have to solder 18 pins to get the display matrix and backpack together.

VOLTAGE
I have been using nodeMCU which operates at 3.3 V and it is working fine. Adafruit's web site mentions that this can be powered with 3.3 or 5 V.

PIN CONNECTIONS
Once you have the matrix and backpack connected, you can control the display with I2C (Inter-Integrated Circuit) protocol. This means you have to use only two pins for controlling the display. You would still have to provide power to the display. On the top of the display there are four pins.
Pin marked as SCL in back (C in front) is the clock pin. This needs to be connected to the Clock/SCL pin on your microcontroller. On Node MCU this is D2 pin, on the Uno this is A4

Pin marked as SDA in back (D in front) is the data pin. This needs to be connected to the SDA/data pin on your micro-controller. On Node MCU this is D1 pin, on the Arduino Uno this is A5

Pin marked as GND in back (- in front) is the round pin.This needs to be connected to any of the GND pins on your micro-controller.

Pin marked as VCC in back (+ i front) is the voltage pin. This needs to be connected to the pin marked as 3.3v or 5V on your micro-controller.

SOFTWARE LIBRARY
I have been using nodeMCU to control the display. The Adafruit_LEDBackpack library works fine and is very easy to write data using the Adafruit_7segment class. The Adafruit_7segment.print, draw methods let me write HEX or Base 10 numbers to the display. Adafruit_7segment.drawColon would control the colon on the display.
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8 people found this helpful
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Reviewed in the United States on January 6, 2018
Color: WhiteVerified Purchase
Reviewed in the United States on February 25, 2024
Color: YellowVerified Purchase
Reviewed in the United States on May 9, 2023
Color: YellowVerified Purchase
Reviewed in the United States on January 28, 2016
2 people found this helpful
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Reviewed in the United States on February 18, 2018
Color: WhiteVerified Purchase
Customer image
4.0 out of 5 stars The included backpack is easy to install and makes working with the display (using ...
Reviewed in the United States on February 18, 2018
I used this for a custom heating application. The build and functional quality of the display is spot-on. The included backpack is easy to install and makes working with the display (using their library) a piece of cake. I was able to focus on my application, without having to worry about the low-level operation of the display. I like the appearance of the white display. My only complaint is the lack of a bezel mount adapter. I wanted my final product to look good and that was really difficult to do with this display. Without a bezel I had a make an exacting cutout in the box using a bridgeport milling machine at a friend's workplace. Something 99.9% of those using this product won't be able to do. There is zero room for error, without a bezel to snap in, while providing a frame around the display to hide the cutout. Pictured is the final product. I ordered a smoke-colored plastic piece from an enterprising person who's marketing an external bezel solution.
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Customer image
One person found this helpful
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Reviewed in the United States on February 20, 2023
Color: YellowVerified Purchase
Reviewed in the United States on December 21, 2013
2 people found this helpful
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Top reviews from other countries

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Carlos
5.0 out of 5 stars La llegada a tiempo!!
Reviewed in Mexico on May 6, 2019
Color: WhiteVerified Purchase
Pierre Gervais
5.0 out of 5 stars Five Stars
Reviewed in Canada on February 25, 2018
tranchant patrick
5.0 out of 5 stars encombrement
Reviewed in France on May 31, 2019
RedVortex
5.0 out of 5 stars Super easy to use with Raspberry Pi, good product
Reviewed in Canada on April 5, 2017
Amazon Customer
5.0 out of 5 stars Five Stars
Reviewed in the United Kingdom on January 10, 2016