Arduino 2-Digit 0.5″ Common Cathode 7 Segment Display Module

  • Rajkumar Sharma
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  • Tested

This is an Arduino compatible board for creating 2 Digit Display projects. The circuit operates with 5V DC, Connector CN1 is provided for bootloader programming and Arduino firmware upload. A new Atmega328 chip requires a bootloader and Arduino firmware programming, Connector CN1 helps you with both functions. Follow the link below to learn more about programming using Arduino. Arduino code is available as a download to test the board.

Arduino Programming

From Arduino to a Microcontroller on a Breadboard: https://www.arduino.cc/en/Tutorial/BuiltInExamples/ArduinoToBreadboard

Arduino Compatible Hardware

  • Atmega328 microcontroller
  • 2 Digit 0.5 Inch 7 Segment Display, Common Cathode
  • 2 x BC847 Transistors to drive Display Common Cathode for Multiplexing
  • CN1: Arduino Programming and Boot-Loader Connector
  • U2: 3 Pin Connector to Connect LM35 Temperature Sensor or Analog Input
  • Current Limiting Resistors for 7 segment display and other components

Applications

  • 2 Digit Counter
  • 2 Digit Timer
  • 2 Digit Thermometer
  • Voltmeter
  • Current Meter
  • Sensor Value Display
  • 2 Digit Score
  • Digital Dice

Arduino Pins

  • Digital Pin D10 Display 1 Common Cathode
  • Digital Pin D11 Display 2 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
  • DIGITAL INPUTS D13, D12, D11, TX, RX
  • ANALOG PIN A0 LM35 TEMPERATURE SENSOR OR ANALOG INPUT
  • PROGRAMING D13, D12, D11, TX, RX, RESET

Features

  • Supply 5V DC can be optimized for 3.3V Operations
  • LM35 Temperature Sensor, Analog Input A0
  • Compact Hardware
  • PCB Dimensions 37.78  x 26.04 mm

Similar modules

Schematic

Parts List

NOQNTY.REF.DESC.MANUFACTURERSUPPLIERPART NO
11CN18 PIN MALE HEADER PITCH 2.54MMWURTH732-5321-ND
21C110uF/10V SMD SIZE 0805MURATA/YAGEO
32C2,C30.1uF/50V SMD SIZE 0805MURATA/YAGEO
42R3,C4DNP
52C5,C622PF/50V SMD SIZE 0805MURATA/YAGEO
61DS17SEG-COMMON CATHODE 0.5INCHSUNLED754-1705-5-ND or 754-1704-5-ND
71DS27SEG-COMMON CATHODE 0.5INCHSUNLED754-1705-5-ND or 754-1704-5-ND
82Q1,Q2BC847ALNEXPERIA1727-2924-2-ND
91R110K 5% SMD SIZE 0805MURATA/YAGEO
101R210E 5% SMD SIZE 0805MURATA/YAGEO
112R4,R51K 5% SMD SIZE 0805MURATA/YAGEO
121R61M 5% SMD SIZE 0805MURATA/YAGEO
138R7 - R14220E 5% SMD SIZE 0805MURATA/YAGEO
141U1ATMEGA328TQPF-32MICROCHIPATMEGA328PB-AURCT-ND
151U23 PIN MALE OR FEMALE HEADER PITCH 2.54MMDNP
161X116MhzECS INCX1103-ND

Connections



Gerber View

Photos

Video

SC56-21SRWA Datasheet

SC56-21SRWA

PCB

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