Both segmented displays and LED matrixes are designed to display a specific image. Segmented displays provide us with information that consists of numbers, letters or special characters. The control system generates two-state signals, allowing you to enter the specific data you want them to display. Also in this way it is possible to read the measurement data. Segment displays are ubiquitous in our everyday life. They can be found in calculators, household appliances, watches, as well as on the operating panels of machines and measuring devices. They are used in street advertisements and boards with scoring or countdown time in quiz shows. Segmented displays differ in the number of characters. We can distinguish single displays, as well as two-, four- and eight-character displays. Seven- and eight-segment displays are most often selected. In addition, we have a wide selection of LED matrixes with a diode resolution ranging from 1x8 to 64x32.
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Segment displays & matrices
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7-segment display x2 - 10mm red - common cathode
The dual 7-segment display allows the display of two digits and some letters.
Index: LCD-06281
Index: LCD-06281
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LED Matrix 16x8 MAX7219 for Raspberry Pi
The cover plate is equipped with two 64 LED matrices' slots. Two LED matrix modules with a total of 128 LEDs and red colour are included. The overlay module is based on the...
Index: OST-18523
Index: OST-18523
Eight-segment display x1 - 14mm green - common cathode
A single 8-segment display allows the display of a digit along with a period and some letters.
Index: LCD-07288
Index: LCD-07288
Eight-segment display - 14mm red - common cathode
Single 8-segment display of digits with points and some characters.
Index: LCD-06448
Index: LCD-06448
10-segment LED Bar Display OSX10201-GGR1
10-segment LED display, the range of colors: 7 x green, 3 x red. It c an be used for example as a temperature gauge or liquid level.
Index: LED-08169
Index: LED-08169
LED matrix 8x8 + MAX7219 controller - small 32x32mm
Matrix module consisting of 64 LEDs arranged in an 8 x 8 square. The set also includes is also a printed circuit board, SPI driver, passive components and goldpin connectors....
Index: MOD-01887
Index: MOD-01887
Elastic matrix 8x8 - 64 LED RGB - WS2812B individually addressed
The matrix consists of 64 individually addressed RGB LEDs arranged in 8 rows and 8 columns. Each pixel can emit a colour from a 24-bit palette. One microcontroller pin is...
Index: LED-06182
Index: LED-06182
Elastic matrix 16x16 - 256 LED RGB - WS2812B individually addressed
The matrix consists of 256 individually addressed RGB LEDs arranged in 16 rows and 16 columns. Each pixel can emit a colour from a 24-bit palette. One microcontroller pin is...
Index: LED-06183
Index: LED-06183
10-segment LED Bar Display OSX10201-GYR1
10-segment LED display, the range of colors is 5 x green, 3 x yellow and 2 x red. It can be used for example as a temperature gauge or liquid level.
Index: LED-08170
Index: LED-08170
Grove - Module 4x 7-segment display - digital interface
Grove series four-character 7-segment display module. It allows displaying four digits along with colon and some letters in red. Based on TM1637 chip, it is compatible with...
Index: SEE-11293
Index: SEE-11293
Elastic matrix 8x32 - 256 RGB LED RGB - WS2812B individually addressed
The matrix consists of 256 individually addressed RGB LEDs arranged in 8 rows and 32 columns. Each pixel can emit a colour from a 24-bit palette. One microcontroller pin is...
Index: LED-06185
Index: LED-06185
Eight-segment display x1 - 14mm green - common anode
Single 8-segment display with digits with points and some characters.
Index: LCD-06440
Index: LCD-06440
Eight-segment display x1 - 14mm green - 8 mcd - common cathode
Single 8-segment display which displays digits with a dot and some characters.
Index: LCD-07306
Index: LCD-07306
4-digit 0.56'' display - 7-segment backpack - I2C - red - STEMMA QT / Qwiic - Adafruit 5599
7-segment display with a diagonal of 0.56'' from Adafruit. It enables the display of 4 digits with dots after each digit and one colon between digits 2 and 3. The digits of...
Index: ADA-22204
Index: ADA-22204
Matrix LED 8x8 + driver MAX7219 - small 32x32mm with wires
Matrix module consisting of 64 LEDs arranged in an 8 x 8 square. The set consists of the board with built-in controller and martix as well as female-female wires.
Index: MOD-07798
Index: MOD-07798
RP2040-Matrix - RP2040 microcontroller board with 5x5 LED matrix - Waveshare 24594
RP2040-Matrix from Waveshare is a module with a built-in Raspberry Pi RP2040 system, which has 20 GPIO pins and a 5 x 5 RGB LED matrix , used to create various visual...
Index: WSR-23569
Index: WSR-23569
4-Digit 7-Segment Display with I2C Digit Clock Unit - Red - M5Stack U146
UNIT-Digi-Clock module with a 7-segment display consisting of 4 digits with dots. The numbers are highlighted in red . The module uses TM1637 as the driver IC and...
Index: MSS-21787
Index: MSS-21787
Blinkt! 8x adressed LED RGB - Raspberry Pi extension
Blinkt! is a shield for the Raspberry Pi mounted on GPIO connector of the minicomputer. Board has eight individually addressed RGB LEDs, ideal for adding a visual notification...
Index: PIM-10620
Index: PIM-10620
4x 8-segment display module - red- SPI - for Raspberry Pi Pico - Waveshare 19806
Module with 8-segment display allowing to display 4 digits and some red letters. It is based on 74HC595 chip which allows communication via SPI interface. Module is...
Index: WSR-19719
Index: WSR-19719
Gravity - segment display 4-digital I2C - red - DFRobot DFR0645-R
4-digit, 8-segment Gravity series display , allows you to adjust the brightness of the displayed characters, thanks to 8-stage adjustment, The device has an I2C port...
Index: DFR-16310
Index: DFR-16310
Eight-segment display x3 - 14mm red - common anode
Triple 8-segment display allows you to display three digits along with points and some letters.
Index: LCD-06447
Index: LCD-06447
Matrix 64x32 - 2048 LED RGB individually addressed
The matrix is composed of 2048 individually addressed RGB LEDs arranged in 32 rows and 64 columns. Each pixel may emit a color from 24-bit palette. Fot the module's controly...
Index: DFR-08363
Index: DFR-08363
RGB LED Hat for Raspberry Pi 3/2/Zero - Waveshare 12725
Shield for the Raspberry Pi containing the LED matrix 8 x 4 consisting of WS2812B LEDs. Each LED can be individually set. The device has dimensions of 65 x 30 mm, it works with...
Index: WSR-08869
Index: WSR-08869
Gravity - segment display 4-digital I2C - green - DFRobot DFR0645-G
Four-digit, 8-segment Gravity series display with adjustable 8-level brightness levels, The modules are equipped with an I2C port compatible with the Gravity...
Index: DFR-16309
Index: DFR-16309
See also
Construction and principle of operation of segment displays
The typical construction of a segment display uses LED diodes , which conduct current when voltage is applied to the pn junction, which is manifested by the illumination of one or more segments. Most often, segment displays are 8-segment, consisting of four vertical or inclined lines and three horizontal lines in the shape of the number 8 and the eighth segment in the shape of a dot. The diodes forming single segments will glow only when a forward bias voltage is applied to them, and the brightness of the segment will depend approximately linearly in proportion to the current flowing through the diode. For this reason, to prevent damage to the display, connect its segments to a voltage source through resistors that limit the flow of current. The color of a segment's light is related to the voltage across the LED that makes up the segment. For the red color, the voltage drop across the diode is approx. 2.0-2.2 V, while for the blue color it is approx. 3.6 V. For a standard, single 8-segment display composed of red LEDs, the current consumption is approx. . 15 mA per segment - taking into account that the display will be controlled by an integrated driver operating at TTL level voltages (5.0 V), and the voltage drop will be 2.0 V per segment, referring to Ohm's law and a series of resistors. E96, display segments should be connected to 220Ω resistors. A 7-segment display may also be the perfect solution for your project.
Controlling segment displays using logic circuits
Segment displays can be controlled from microcontrollers, but also in purely hardware form, e.g. using the CD4511 system, which is a 7-segment driver and BCD decoder in one (the system does not support a display segment imitating a dot) to control displays connected internally in a common cathode system. The system is powered by 5.0 V and is equipped with four inputs marked as A, B, C and D and corresponding to bit weights of 1, 2, 4 and 8, respectively. The controller has seven logical outputs, one for each segment. The maximum output current of a single output is 25 mA. By selecting resistors, you can set the intensity of the segments' lighting according to the project needs.
RGB LED matrices - effective and practical
Matrices of RGB LEDs arranged in the form of a two-dimensional array enable the display of various signs, graphic symbols and more! Such boards are found in everyday life, among others: as mosaic displays of advertisements and passenger information. The LED matrices we offer can be controlled with both Arduino and Raspberry Pi. Thanks to the built-in driver, one microcontroller pin is enough to operate the matrix. The RGB LED matrices we offer are available in various row and column sizes, i.e. from 1x8 to 64x32. Thanks to this, using RGB LED matrices, you will be able to diversify the appearance of the operator panel interface and build a board to display cool animations!
Segment displays enable legible display of various types of information, which consist not only of numbers and letters, but also of special characters. The segment display is used, among others, in electronics, household appliances and calculators. Moreover, it is used in street advertising, various types of measuring instruments, electronic equipment and even street advertising. The 7-segment display is one of the most popular among all displays of this type.
Seeedstudio 7-segment displays are distinguished by easy operation, universal use and wide compatibility. Selected models can be successfully connected to a microcontroller Arduino. Adafruit 7-segment displays are also a good choice. Selected models are controlled exclusively via the I2C interface. Adafruit modules require 5V or 3V to be powered.
