Arduino 4-Digit 0.5″ Common Cathode 7 Segment Display Module

  • Rajkumar Sharma
  • 57 Views
  • moderate
  • Tested

This project will help you to easily develop an Arduino compatible project that requires 4 x -7Segment 0.5″ displays. The project consists of an Atmega328 microcontroller, 4 x BC847 NPN transistors to drive the common cathode displays. All displays are used in multiplexing configurations. The circuit operates with 5V DC and consumes a few milliamps. Arduino code is provided to test the board. The code is pretty simple, it will read 0 to 5V on analog pin A0 and display 0 to 1000 display, basically 0 to 5V mapping to 0-1000. Users may write their own code to read an analog voltage from a sensor or other source and display it on the 4 x 7segment displays.

The new Atmega328 chip requires a bootloader and Arduino firmware, follow the link below to learn more about programming and bootloader burning.

https://www.arduino.cc/en/Tutorial/BuiltInExamples/ArduinoToBreadboard

Arduino Compatible Hardware Contains

  • Atmega328 microcontroller
  • 4 Digit 0.5″ 7 Segment Display, Common Cathode
  • 4 x BC847 Transistors to drive Display Common Cathode for Multiplexing
  • CN1: Arduino Programming and Boot-Loader
  • CN1: 3 Pin Connector to Connect LM35 Temperature Sensor or Analog Input
  • Current Limiting Resistors for 7 segment display and other components

Applications

  • 4 Digit Counter
  • 4 Digit Thermometer
  • Voltmeter
  • Current Meter
  • Sensor Value Display- Analog Voltage Reading
  • 4 Digit Score Board
  • Gaming

Features

  • Supply 5V DC, can be optimized for 3.3V Operations
  • LM35 Temperature Sensor or Analog Input A0
  • Compact Hardware
  • PCB Dimensions 51.28 x 34.93 mm

Arduino Pins

  • Digital Pin D10 Display 1 Common Cathode
  • Digital Pin D11 Display 2 Common Cathode
  • Digital Pin D12 Display 3 Common Cathode
  • Digital Pin D13 Display 4 Common Cathode
  • Digital Pin D2 Display Segment A
  • Digital Pin D3 Display Segment B
  • Digital Pin D4 Display Segment C
  • Digital Pin D5 Display Segment D
  • Digital Pin D6 Display Segment E
  • Digital Pin D7 Display Segment F
  • Digital Pin D8 Display Segment G
  • Digital Pin D9 Display Segment DP
  • Analog Pin A0 Analog Input from Sensor, LM35 Temperature Sensor

Similar Modules

Schematic

Parts List

NOQNTY.REF.DESCMANUFACTURERSUPPLIERPART NO
11CN13 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5316-ND
22C1,C40.1uF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
32C2,C322PF/50V SMD SIZE 0805MURATA/YAGEODIGIKEY
42C5,R17DNP
54DS1,DS2,DS3,DS40.5/0.56INCH 7 SEGMENT DISPLAY COMMON CATHODELUMEX OPTODIGIKEY
61D1LED SMD SIZE 0805LITE ON INCDIGIKEY160-1427-1-ND
74Q1,Q2,Q3,Q4BC847ALNEXPERIADIGIKEY1727-2924-2-ND
85R1,R4,R5,R6,R71K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
91R210K 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
101R31M 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
118R8 To R15220E 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
121R1610E 5% SMD SIZE 0805MURATA/YAGEODIGIKEY
131U1ATMEGA328 DIP 28MICROCHIPDIGIKEYATMEGA328-PU-ND
141Y116MHZECS INCDIGIKEYX1103-ND
151CN22 PIN MALE HEADER PITCH 2.54MMWURTHDIGIKEY732-5315-ND
161SCKT28 PIN DIP IC SOCKETON SHORE TECHDIGIKEYED3050-5-ND

Connections



Gerber View

Photos

Video

SC56-21SRWA Datasheet

SC56-21SRWA

PCB

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