Introduction: Arduino Oscilloscope With Nokia 5110 LCD

Picture of Arduino Oscilloscope With Nokia 5110 LCD

In this instructable I will show you how to make an oscilloscope with the help of an arduino nano and a nokia 5110 LCD display

Step 1: Things Required

1)Arduino board

2)Nokia 5110 LCD

3)2*10k ohm potentiometers

4)Jumper wires

5)Breadboard

Step 2: Circuit and Connections

Picture of Circuit and Connections

Connect the lcd as shown in the 1st image

to connect the potentiometers.

First connect the 2 terminal ends of both the potentiometers to +5V of arduino and ground of arduino.

Now connect the middle pin of both the potentiometers to analog pins A1 and A2 respectively.

The input signal is given between A0 and ground.

Step 3: The Code:You Will Have to Download the Adafruit Pcd8544.h and Adafruit Gfx.h Library

#include<SPI.h>

#include<Adafruit_GFX.h>

#include<Adafruit_PCD8544.h>


int dial1,dial2; long tim,values[84];

Adafruit_PCD8544 display = Adafruit_PCD8544(13,11,9,10,8);

void setup()

{

display.begin();

display.setContrast(50);

}

void loop() {

dial1 = analogRead(A1); //fine tuner for time per division

dial2 = analogRead(A2); //range selector for time per division

//////////////oscilloscope/////////////////

int n=map(dial2,0,1023,1,30); // range,either from 0-1000,1000-2000,2000-3000 and so on tim=map(dial1,0,1023,(n-1)*1000,n*1000); //

for(int i=0;i<84;i++)

{

values[i]=map(analogRead(A0),0,1023,0,47); //getting values

delayMicroseconds(tim);

}

display.clearDisplay();

display.drawLine(0,24,84,24,BLACK); //x-axis

display.drawLine(42,0,42,48,BLACK); //y-axis

display.drawRect(0,0,84,48, BLACK);

for(int i=4;i<=44;i+=5)

{

display.drawLine(41,i,43,i,BLACK); //scale

}

for(int i=0;i<84;i++)

{

display.drawLine(i,47-values[i],i,47-values[i+1], BLACK); //drawing graph

}

display.display();

}

Step 4: Testing

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