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 red - common anode
Single 8-segment display of digits with points and some characters.
Index: LCD-06438
Index: LCD-06438
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
Eight-segment display - 14mm red - common cathode
Single 8-segment display of digits with points and some characters.
Index: LCD-06448
Index: LCD-06448
Eight-segment display x1 - 10mm red - common anode
Single 8-segment display displays digits with points and some characters.
Index: LCD-06443
Index: LCD-06443
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
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
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
Gravity - segment display 8-digital I2C - red - DFRobot DFR0646-R
The 8-digit, 8-segment Gravity series display allows you to adjust the brightness of the characters displayed, thanks to a 16-degree adjustment. The device has an I2C...
Index: DFR-16311
Index: DFR-16311
8x8 LED Matrix - LED RGB Matrix Modukle - 64 WS2812B diodes - SB Components 25749
Module with an LED matrix consisting of 64 WS2812B RGB LEDs in a system of 8 columns and 8 rows. The dimensions of the diode are 5 x 5 mm, and the module: 81 x 80 mm. The...
Index: SBC-22945
Index: SBC-22945
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
Eight-segment display x2 - 14mm blue - common anode
Dual 8-segment display two digits along with points and some characters.
Index: LCD-06435
Index: LCD-06435
Eight-segment display x2 - 14mm green - common anode
Dual 8-segment display two digits along with points and some characters.
Index: LCD-06436
Index: LCD-06436
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
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
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 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
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
10-segment LED Bar Display OSX10201-RGG1
10-segment LED display, the range of colors is 4 x red and 6 x green. It can be used for example as a temperature gauge or liquid level.
Index: LED-08172
Index: LED-08172
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
Neco Unit LED - cat ear shaped board with RGB LEDs - 2 pieces - M5Stack U163
Neco Unit LED is a cat ear-shaped board with RGB LEDs from M5Stack . Equipped with 35 WS2812C-2020 RGB LEDs, it offers countless lighting effect configurations. With two...
Index: MSS-23507
Index: MSS-23507
MicroView - USB programmer - SparkFun DEV-12924
USB programmer for the module of MicroView OLED display. The device is equipped with male and female connectors, thanks to this, board can be attached directly or connect using...
Index: SPF-03070
Index: SPF-03070
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Driver for SPI alphanumeric display - SparkFun COM-10103
Driver based on the A6282 system allows you to control the alphanumeric segmented display using the SPI bus.
Index: SPF-03272
Index: SPF-03272
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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.