Published October 1, 2018

DIY Coin Sorting and Counting Bank From Cardboard

In this project I want to show you how to make a coin sorting and counting bank.

BeginnerShowcase (no instructions)12,336

Things used in this project

Hardware components

Arduino Nano R3

TCRT5000 IR sensor

I2C LCD Module

Adafruit Standard LCD - 16x2 White on Blue

9V battery (generic)

Switch

Resistor 10k ohm

10 ohm resistor

Jumper wires (generic)

cardboard

Story

The coin is inserted and then sorted through the slider and hole. Whenever IR sensor detects coin, it will send an infrared signal to the IR sensor. The IR sensor will receive this signal and give it to the Arduino.

How Does IR Sensor Work?

Infrared is light that has a wavelength longer than visible red light. The ranges of infrared include near infrared, mid infrared and far infrared, spanning wavelengths from about 710 nanometers (near infrared) to 100 micrometers (far infrared).

What Is an Infrared Light?

All objects emit light according to their temperature--this is called "black body radiation." The hotter the object, the shorter wavelength of light it emits. The Earth emits infrared light at a peak of about nine to 10 micrometers--and so do warm-blooded animals like humans. This light can be used to detect motion or warmth.

LED IR Detectors

IR (infrared) sensors detect infrared light. The IR light is transformed into an electric current, and this is detected by a voltage or amperage detector.A property of light-emitting diodes (LEDs) is that they produce a certain wavelength of light when an electric current is applied--but they also produce a current when they are subjected to the same wavelength light.

A pair of IR LEDs can be used as motion detectors. The first IR LED is wired to emit LED and the second LED is wired to transmit a signal when it receives an IR input. When an object comes within range of the emitted IR, it reflects the IR back to the receiving LED and produces a signal. This signal can be used to open sliding doors, turn on a light or set off an alarm.

Hardware and Materials Required :

Arduino nano: https://amzn.to/32VPWOQ

TCRT5000 IR sensor: https://amzn.to/3atT5rw

I2C LCD Module: https://amzn.to/2POt9Pi

16x2 LCD: https://amzn.to/38xLRl6

9v battery: https://amzn.to/2wPmnSP

Switch: https://amzn.to/2upTngE

10k ohm resistor: https://amzn.to/2VO40Z6

10 ohm resistor: https://amzn.to/2PMXoWY

jumper wires: https://amzn.to/398mQhq || https://www.banggood.com/custlink/Km3...

Cardboard: https://amzn.to/39ufbKH

Code

Coin Sorting and Counting Bank

#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
#include <EEPROM.h>

LiquidCrystal_I2C lcd(0x27,2,1,0,4,5,6,7); // 0x27 is the I2C bus address for an unmodified module

const int coi100n  = A0;    //input from ir sensor
const int coi200n = A1;
const int coi500n  = A2; 

int ir100,ir200,ir500 = 0;
int cnt100r,cnt200r,cnt500r,cnttotal = 0;
void setup() {
  Serial.begin(9600); 
 pinMode(coi100n , INPUT);
  pinMode(coi200n ,INPUT);
  pinMode(coi500n,INPUT);
  
 
 lcd.setBacklightPin(3,POSITIVE);
 lcd.setBacklight(LOW); // You can turn the backlight off by setting it to LOW instead of HIGH
 lcd.begin(16, 2);
lcd.write(EEPROM.read(5));
}

void loop() {
 ir100 =digitalRead(coi100n);  //read the state of coi100n and store it as ir100
  ir200 =digitalRead(coi200n); //read the state of coi100n and store it as ir200
  ir500=digitalRead(coi500n);  //read the state of coi100n and store it as ir500
  
 if(ir100 ==LOW){cnt100r+=100;  delay(100);}
 if(ir200 ==LOW){cnt200r+=200;  delay(100);}
 if(ir500 ==LOW){cnt500r+=500;  delay(100);}
 
 cnttotal =cnt100r+cnt200r+cnt500r;
 
EEPROM.write(5,cnttotal);
Serial.println(EEPROM.read(5)); 


lcd.setCursor(0,0);
lcd.print("TOTAL:");
lcd.setCursor(0,1);
lcd.print(cnttotal);
}

Credits

Barqunics

7 projects • 71 followers

Hello, My name is Ikhsan

DIY Coin Sorting and Counting Bank From Cardboard

Things used in this project

Hardware components

Story

How Does IR Sensor Work?

What Is an Infrared Light?

LED IR Detectors

Schematics

Coin Sorting and Counting Bank

Code

Coin Sorting and Counting Bank

Credits

Barqunics

Comments

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DIY Coin Sorting and Counting Bank From Cardboard

DIY Coin Sorting and Counting Bank From Cardboard

Things used in this project

Hardware components

Story

How Does IR Sensor Work?

What Is an Infrared Light?

LED IR Detectors

Schematics

Coin Sorting and Counting Bank

Code

Coin Sorting and Counting Bank

Credits

Barqunics

Comments

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