Created June 30, 2020 © GPL3+

Digital Ammeter Using Arduino

In this project, we are going to measure the current using ohm's law.

Intermediate32

Things used in this project

Hardware components

Arduino UNO

Single Turn Potentiometer- 10k ohms

Resistor, 22 ohm

Adafruit RGB Backlight LCD - 16x2

LED (generic)

Software apps and online services

Arduino IDE

Story

About the Project:

As we all are aware of ohm's law, which states that

V=IR

Where V= voltage in volt (v)

I= Current in Ampere (A)

R= Resistance in ohm (Ω)

To find I we have to useI= V/R

This Ammeter circuit contains a resistor and LED as a load. The resistor is attached in series to the LED that current flows via the load and voltage drops are discovered from the resistor.

In the ADC of Arduino that modifies the voltage into 10-bit resolution numbers from 0-1023. So we require to modify it in voltage value bu utilizing the programming.

The value of voltage from the ADC of Arduino is ranged between 0-1023 and the reference voltage is ranges between 0-5v. From the above voltage value and by dividing it with 22 ohm we can calculate current. Here we have utilized the value of 22ohm resistor as current sensor.

Internet of Things Course Training will give you a thorough view of such IoT Applications.

Run a program

#include<LiquidCrystal.h>
LiquidCrystal lcd (7,8,9,10,11,12);
 
void setup() {
// put your setup code here, to run once:
Serial.begin(9600);
lcd.begin(16,2);
lcd.clear();
}
 
void loop() {
// put your main code here, to run repeatedly:
int voltage_value0 = analogRead(A0);
int voltage_value1 = analogRead(A1);
 
 int subraction_value =(voltage_value0 - voltage_value1) ;
 float temp_val = (subraction_value*0.00488);
 
 float current_value = (temp_val/22);
 Serial.print(current_value);
 lcd.setCursor(0,0);
 lcd.print("current value=");
 lcd.setCursor(0,1);
 lcd.print (current_value);
 lcd.print("A");
 delay(1000);
}

Credits

hIOTron

78 projects • 2 followers

hIOTron is an internet of things based company that offers an IoT Platform, products, IoT Solutions, and IoT Training.

Digital Ammeter Using Arduino

Things used in this project

Hardware components

Software apps and online services

Story

Code

Run a program

Credits

hIOTron

Comments

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Digital Ammeter Using Arduino

Digital Ammeter Using Arduino

Things used in this project

Hardware components

Software apps and online services

Story

Code

Run a program

Credits

hIOTron

Comments

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