Hello everyone, you might have heard of a electroscope which is used to detect charges on a body. I thought of making one with arduino and sharing it with you its really amazing you have to just touch the pin to any object and it will tell you the charges in volts. Isn't it amazing so lets start making it !
First of all I want to tell you that in schematics that I have given all connections except a wire which I have connected to Analog pin 0 you have to connect wire to that pin and the end of pin should be used to touch object and to know the charges. Please remember this as this is mandatory or else your project will not work.
Lets also understand the logic behind the code, till now you might have understood that we will be using analog pin 0 for reading the charges but there is one problem that analog output gives value from 0 - 1023 but that doesn't give us charges in volt. I have noticed one thing that when we get output of 1023 it means that that 5v is supplied to pin ( arduino UNO works on 5v ), that means that dividing the analog output from 204.6 would do the trick it would tell us the charges in volt on a object when we touch the pin to the object.
I have also given the code and schematics for you to understand the project better. I am also giving a video so that you can understand the project better.
Do watch the video and subscribe my channel to get more exciting projects .
Once you have completed making the project you can touch the pin to different things like 5v, 3v pin on arduino etc. you can also connect the 5v pin to a resistor and then touch the other end of resistor and see the charges in volt.
/* * This code is written by Aryan Kurkure ; * It has been given MIT license ; * If this code is shared it may be used with considerable importance ; * For making a digital electroscope; * Learning arduino with aryan , all rights reserved . * To see more projects go to - https://www.youtube.com/channel/UCvzUMpZFM8wyFQIDD_b3TPQ/videos . * Subscribe to learning ardunio with aryan to get more projects .*///Add the lcd library as we are going to use it.#include<LiquidCrystal.h>//Create a lcd object for using it later in the code for connecting, printing etc.LiquidCrystallcd(12,11,5,4,3,2);//Create a connection.constintsensor=A0;//Create a variable for storing A0 pin's value .intvalue;//Create a variable for charges in volt .intcharges;voidsetup(){// put your setup code here, to run once://Start the lcd screen and classify its size .lcd.begin(16,2);//classify the A0 pin as input .pinMode(sensor,INPUT);}voidloop(){// put your main code here, to run repeatedly://Read the values from A0 pin .value=analogRead(sensor);//Change the value to charges .charges=value/204.6;//Set the cursor for 1rst line .lcd.setCursor(0,0);//Print on the screen .lcd.print("Electric charges");//set the lcd cursor to 2nd line for printing values .lcd.setCursor(0,1);//print value .lcd.print(charges);//print 'volts' symbol after value .lcd.print(" Volts");}
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