Introduction: 7 Segment Display With Arduino
You will find code and circuit diagram for both common cathode and common anode seven segment displays in this article.
7 segment displays don’t look modern enough for you, but they are the most practical way to display numbers. They are easy to use, cost-effective and highly readable, both in limited light conditions and in strong sunlight.
In this project, we will display numbers from 0 to 9 as it is a single 7 segment display we can display only one digit at a time.
Components Required
- Arduino - https://amzn.to/32jAMUA
- 7 segment display - https://amzn.to/35p4wS5
- Breadboard - https://amzn.to/3kdp4Rt
- jumper wires - https://amzn.to/3iqdBxM
- 8 X resistors of 220 ohms - https://amzn.to/2ZuPNRN
Resistance is important to apply otherwise display can burn after a few minutes.
Step 1: Circuit Schematic of Common Cathode
Pin 12 - - > a TERMINAL OF 7 SEG
Pin 11 - - > b TERMINAL OF 7 SEG
Pin 10 - - > dp TERMINAL OF 7 SEG
Pin 9 - - > c TERMINAL OF 7 SEG
Pin 8 - - > d TERMINAL OF 7 SEG
Pin 7 - - > e TERMINAL OF 7 SEG
Pin 6 - - > g TERMINAL OF 7 SEG
Pin 5 - - > f TERMINAL OF 7 SEG
GND - - > - TERMINAL OF 7 SEG
Step 2: Circuit Schematic of Common Anode
Pin 12 - - > a TERMINAL OF 7 SEG
Pin 11 - - > b TERMINAL OF 7 SEG
Pin 10 - - > dp TERMINAL OF 7 SEG
Pin 9 - - > c TERMINAL OF 7 SEG
Pin 8 - - > d TERMINAL OF 7 SEG
Pin 7 - - > e TERMINAL OF 7 SEG
Pin 6 - - > g TERMINAL OF 7 SEG
Pin 5 - - > f TERMINAL OF 7 SEG
5V - - > - TERMINAL OF 7 SEG
Step 3: Arduino Code
Code for common anode is exact opposite of common cathode 7 segment display
