Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO microcontroller, a 5V mini water pump, a Coin Hopper, a 16x2 I2C LCD, multiple pushbuttons, a Multi Coin Acceptor, a DC Power Source, and a buzzer. The circuit is designed to interface these components with the Arduino UNO for various functionalities.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0

Coin Hopper

• Description: A device used to dispense coins.
• Pins: VCC, SIGNAL, GND, P, N

5V Mini Water Pump

• Description: A small water pump that operates at 5V.
• Pins: Positive pin, Negative pin

Pushbutton

• Description: A simple pushbutton switch.
• Pins: Pin 2, Pin 1, Pin 3, Pin 4

16x2 I2C LCD

• Description: A 16x2 character LCD with I2C interface.
• Pins: GND, VCC, SDA, SCL

Multi Coin Acceptor

• Description: A device that accepts multiple types of coins.
• Pins: COIN, DC12V, GND, COUNTER

DC Power Source

• Description: A power source providing DC voltage.
• Pins: Ground, Positive

Buzzer

• Description: A simple buzzer for sound output.
• Pins: PIN, GND

Wiring Details

Arduino UNO

• 5V: Connected to VCC of Coin Hopper, 5V Mini Water Pump, and VCC of 16x2 I2C LCD.
• GND: Connected to GND of 16x2 I2C LCD, Negative pin of 5V Mini Water Pump, GND of Buzzer, and Pin 2 of all Pushbuttons.
• A4: Connected to SDA of 16x2 I2C LCD.
• A5: Connected to SCL of 16x2 I2C LCD.
• D10: Connected to PIN of Buzzer.
• D9: Connected to SIGNAL of Coin Hopper.
• D8: Connected to COUNTER of Multi Coin Acceptor.
• D7: Connected to COIN of Multi Coin Acceptor.
• D6: Connected to Pin 1 of one Pushbutton.
• D5: Connected to Pin 1 of another Pushbutton.
• D4: Connected to Pin 1 of another Pushbutton.
• D3: Connected to Pin 1 of another Pushbutton.
• D2: Connected to Pin 1 of another Pushbutton.

Coin Hopper

• VCC: Connected to 5V of Arduino UNO.
• SIGNAL: Connected to D9 of Arduino UNO.
• GND: Connected to GND of Multi Coin Acceptor and Ground of DC Power Source.

5V Mini Water Pump

• Positive pin: Connected to 5V of Arduino UNO.
• Negative pin: Connected to GND of Arduino UNO.

Pushbutton

• Pin 2: Connected to GND of Arduino UNO.
• Pin 1: Connected to D6, D5, D4, D3, and D2 of Arduino UNO respectively for each pushbutton.

16x2 I2C LCD

• GND: Connected to GND of Arduino UNO.
• VCC: Connected to 5V of Arduino UNO.
• SDA: Connected to A4 of Arduino UNO.
• SCL: Connected to A5 of Arduino UNO.

Multi Coin Acceptor

• COIN: Connected to D7 of Arduino UNO.
• DC12V: Connected to Positive of DC Power Source.
• GND: Connected to GND of Coin Hopper and Ground of DC Power Source.
• COUNTER: Connected to D8 of Arduino UNO.

DC Power Source

• Ground: Connected to GND of Multi Coin Acceptor and GND of Coin Hopper.
• Positive: Connected to DC12V of Multi Coin Acceptor.

Buzzer

• PIN: Connected to D10 of Arduino UNO.
• GND: Connected to GND of Arduino UNO.

Documented Code

Arduino UNO Code (sketch.ino)

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

Additional Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and documented code.