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

1)Arduino board

2)Nokia 5110 LCD

3)2*10k ohm potentiometers

4)Jumper wires

5)Breadboard

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.

#include

#include

#include

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();

}