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Arduino 4-Digit 0.5″ Common Cathode 7 Segment Display Module
- Rajkumar Sharma
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- SKU: EL115866
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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
- Arduino 2-Digit 0.5″ Common Cathode 7 Segment Display Module
- Arduino 3-Digit 0.5″ Common Cathode 7 Segment Display Module
Schematic
Parts List
| NO | QNTY. | REF. | DESC | MANUFACTURER | SUPPLIER | PART NO |
|---|---|---|---|---|---|---|
| 1 | 1 | CN1 | 3 PIN MALE HEADER PITCH 2.54MM | WURTH | DIGIKEY | 732-5316-ND |
| 2 | 2 | C1,C4 | 0.1uF/50V SMD SIZE 0805 | MURATA/YAGEO | DIGIKEY | |
| 3 | 2 | C2,C3 | 22PF/50V SMD SIZE 0805 | MURATA/YAGEO | DIGIKEY | |
| 4 | 2 | C5,R17 | DNP | |||
| 5 | 4 | DS1,DS2,DS3,DS4 | 0.5/0.56INCH 7 SEGMENT DISPLAY COMMON CATHODE | LUMEX OPTO | DIGIKEY | |
| 6 | 1 | D1 | LED SMD SIZE 0805 | LITE ON INC | DIGIKEY | 160-1427-1-ND |
| 7 | 4 | Q1,Q2,Q3,Q4 | BC847AL | NEXPERIA | DIGIKEY | 1727-2924-2-ND |
| 8 | 5 | R1,R4,R5,R6,R7 | 1K 5% SMD SIZE 0805 | MURATA/YAGEO | DIGIKEY | |
| 9 | 1 | R2 | 10K 5% SMD SIZE 0805 | MURATA/YAGEO | DIGIKEY | |
| 10 | 1 | R3 | 1M 5% SMD SIZE 0805 | MURATA/YAGEO | DIGIKEY | |
| 11 | 8 | R8 To R15 | 220E 5% SMD SIZE 0805 | MURATA/YAGEO | DIGIKEY | |
| 12 | 1 | R16 | 10E 5% SMD SIZE 0805 | MURATA/YAGEO | DIGIKEY | |
| 13 | 1 | U1 | ATMEGA328 DIP 28 | MICROCHIP | DIGIKEY | ATMEGA328-PU-ND |
| 14 | 1 | Y1 | 16MHZ | ECS INC | DIGIKEY | X1103-ND |
| 15 | 1 | CN2 | 2 PIN MALE HEADER PITCH 2.54MM | WURTH | DIGIKEY | 732-5315-ND |
| 16 | 1 | SCKT | 28 PIN DIP IC SOCKET | ON SHORE TECH | DIGIKEY | ED3050-5-ND |
Connections
Gerber View
Photos
Video
SC56-21SRWA Datasheet
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