Today we are going to create a project with 7-segment LED 2-digit by using Arduino UNO, include the wiring and coding. Now to see this project step by step:
|Figure 1: 7-Segment 2-digit 10-pins|
- Arduino UNO
- Jump Wire
- 7-Segment 2-Digit 10-pins LED
1. Understand the segments in 7-Segment LED
7-Segment LED has 7 segments LED to display the number from Zero to Nine for each one digit. Each segment has is own variable and work independently. See the figure 2 below:
|Figure 2: 7 Segments and Binary Code|
To set the 7-Segment LED with binary code, you have to write the code sequence from a-g and left to right with start up binary header "0b".
|Figure 3.7-segment 2-digit 10-pins|
Figure 3 show the 7-segment 2-digit 10-pins, how to set each pin on this LED.
a, b, c, d, e, f and g are not on order, so please carefully in wiring. Otherwise your LED display will not show the number you want.
"ds1" is the power pin to support digit 1 on the right side and "ds2" is the power pin to support digit 2 on the left side. "dp" is point pin next to the digit buttom.
Make sure you have connected with the right pin of Arduino and 7-Segment LED.
2. Circuit Wiring
Set Arduino UNO digital pin from 2 to 8 are the pins to control the 7-Segment display. Arduino UNO pin 12 & 13 are the switch power for the two digits on 7-Segment LED.
|Figure 4. Arduino UNO and 7-Segment Wiring|
Test the Project
You will counter from 00 to 99 and loop this count on you 7-Segment LED.
|Figure 5. Testing|
Now let enjoy you day guys, leave you comment below this post for you idea in this project.