Coding serial monitor output to 7 segment display

Using Arduino Programming Questions
1

Hi, I am a student relatively new to coding with Arduinos, and was wondering if anyone could point me in the right direction. I have been working on a project for my engineering class, and in my project, have been pulling numerical accelerometer data from an arduino nano LSM9DS1 IMU through the serial monitor in the Arduino IDE. What I want to do is take that output and display it on a 4 digit 7 segment display. If anyone could help me out with this by showing me how I could go about this -or tell me if this is even possible - that would be greatly appreciated. If there are any examples of this already that I have somehow missed that would be fine too. Thanks.

2

Tots possible, easy even.

Do you have google where you live?

Try

  Arduino 4 digit 7 segment display

and read for a bit, many times been done.

You'll just out calls to whatever you write where your serial printing is done now.

a7

3

there are libraries just for this to make your life easy. Looking for "Seven Segment Arduino Library" should get you going.

4

more info pls. 4 digit 7 segment display - which one?

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etc...

5

I would use the HT16K33 - a I2C LED driver or the MAX7219/MAX7221 via SPI.

by the way "scrolling" a number is not very readable. Use more digits to be able to display to full digits. The 8 digit modules are ridiculous cheap anyway.
If you really want to scroll a number it's just a question of multiplications and modulo divisions to show a specific part of the number.

6

You may follow this tutorial to show your accelerometer data on a 4-digit cc-type multiplexed display unit using SevSeg.h Library.

1. The Schematic
cc4drxy
Figure-1:

2. Test Sketch to show 1234 on the display unit of Fig-1

#include<SevSeg.h>
SevSeg sevSeg;           //create object sevSeg

int numberToShow = 1234;

void setup()
{
 byte segDPins[] = {8, 9, 10, 11, 12, 13, 6, 7};  //DPin8 = seg-a, …, DPin-7 = seg-p
 byte ccDPins[] = {2, 3, 4, 5};          //DPin-2 = cc0, DPin-2 = cc1, ...
 sevSeg.begin(COMMON_CATHODE, 4, ccDPins, segDPins, false, false, false, true);
 sevSeg.setNumber(numberToShow, 0, LOW);
}

void loop()
{
 sevSeg.refreshDisplay();
}

3. To read details on the SevSeg.h Library functions (particularly on showing number with decimal point), you may consult this tutorial.

1 Like
7

This is the 4 digit 7 segment display I am using

8

Then interface it with UNO as per post #6 and give a try.

9

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