Arduino Volt Meter

Digital Voltmeter with Arduino And HD44780 LCD

Apr 3, 2022

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embedded

monitoring

robots

Devices & Components

Arduino Nano

Alphanumeric LCD, 16 x 2

Solderless Breadboard Full Size

Trimmer Potentiometer, Square

Jumper wires (generic)

Resistor 100 ohm

USB-A to Mini-USB Cable

Rotary Potentiometer, 10 kohm

Hardware & Tools

Multitool, Screwdriver

Software & Tools

Arduino IDE

Project description

Code

Arduino Digital Volt meter

c_cpp

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1#include <LiquidCrystal.h>
2
3LiquidCrystal lcd(5,6,7,8,9,10);
4
5float
6  voltage;
7float val;
8const int Vref = 5.0;
9const int resolution = 1024.0;
10
11void
12  setup() {
13  // put your setup code here, to run once:
14lcd.begin(16,2);
15lcd.setCursor(0,0);
16lcd.print("Voltage:");
17
18}
19
20void
21  loop() {
22  // put your main code here, to run repeatedly:
23val = analogRead(A3);
24voltage
25  = (val*Vref)/resolution;
26lcd.setCursor(0,1);
27lcd.print(voltage);
28delay(90);
29}
30

#include <LiquidCrystal.h>

LiquidCrystal lcd(5,6,7,8,9,10);

float
  voltage;
float val;
const int Vref = 5.0;
const int resolution = 1024.0;

void
  setup() {
  // put your setup code here, to run once:
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("Voltage:");

}

void
  loop() {
  // put your main code here, to run repeatedly:
val = analogRead(A3);
voltage
  = (val*Vref)/resolution;
lcd.setCursor(0,1);
lcd.print(voltage);
delay(90);
}

Downloadable files

Arduino Digital Volt meter

Download PDF

Arduino Digital Volt meter

Download PDF

Arduino Digital Volt meter

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ramjipatel376

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