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

Rajkumar Sharma
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SKU: EL115790
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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

NO	QNTY.	REF.	DESC.	MANUFACTURER	PART NO
1	1	CN1	8 PIN MALE HEADER PITCH 2.54MM	WURTH	732-5321-ND
2	1	C1	10uF/10V SMD SIZE 0805	MURATA/YAGEO
3	2	C2,C3	0.1uF/50V SMD SIZE 0805	MURATA/YAGEO
4	2	R3,C4	DNP
5	2	C5,C6	22PF/50V SMD SIZE 0805	MURATA/YAGEO
6	1	DS1	7SEG-COMMON CATHODE 0.5INCH	SUNLED	754-1705-5-ND or 754-1704-5-ND
7	1	DS2	7SEG-COMMON CATHODE 0.5INCH	SUNLED	754-1705-5-ND or 754-1704-5-ND
8	2	Q1,Q2	BC847AL	NEXPERIA	1727-2924-2-ND
9	1	R1	10K 5% SMD SIZE 0805	MURATA/YAGEO
10	1	R2	10E 5% SMD SIZE 0805	MURATA/YAGEO
11	2	R4,R5	1K 5% SMD SIZE 0805	MURATA/YAGEO
12	1	R6	1M 5% SMD SIZE 0805	MURATA/YAGEO
13	8	R7 - R14	220E 5% SMD SIZE 0805	MURATA/YAGEO
14	1	U1	ATMEGA328TQPF-32	MICROCHIP	ATMEGA328PB-AURCT-ND
15	1	U2	3 PIN MALE OR FEMALE HEADER PITCH 2.54MM		DNP
16	1	X1	16Mhz	ECS INC	X1103-ND