Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as resistors, pushbuttons, an NTC thermistor, an I2C module, an LCD display, a rectifier diode, a power supply, a buzzer, a fan, and an Arduino UNO microcontroller. The circuit is designed to interface these components to perform specific functions, with the Arduino UNO serving as the central control unit.

Component List

IRFZ44N

• Description: N-channel MOSFET
• Pins: Gate, Drain, Source

Resistor (10k Ohms)

• Description: Resistor
• Pins: pin1, pin2
• Properties: Resistance: 10k Ohms

Resistor (100 Ohms)

• Description: Resistor
• Pins: pin1, pin2
• Properties: Resistance: 100 Ohms

Pushbutton

• Description: Pushbutton switch
• Pins: Pin 1, Pin 2, Pin 3, Pin 4

I2C Module

• Description: I2C communication module
• Pins: SCL, SDA, VCC, GND

16X2 LCD

• Description: 16x2 character LCD display
• Pins: VSS, VDD, V0, RS, RW, E, D0, D1, D2, D3, D4, D5, D6, D7, A, K

1N4007 Rectifier Diode

• Description: Rectifier diode
• Pins: Cathode, Anode

12V Power Supply

• Description: 12V DC power supply
• Pins: +, -

Buzzer

• Description: Piezoelectric buzzer
• Pins: PIN, GND

Fan

• Description: DC fan
• Pins: GND, 5V

Arduino UNO

• Description: Microcontroller board
• 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

NTC

• Description: Negative Temperature Coefficient thermistor
• Pins: A0, A1

Wiring Details

IRFZ44N

• Gate: Connected to pin1 of a 100 Ohm resistor
• Drain: Connected to GND of the fan and Anode of the 1N4007 Rectifier Diode
• Source: Connected to GND of the Arduino UNO and PIN of the buzzer

Resistor (10k Ohms)

• pin1: Connected to Pin 4 of three pushbuttons and GND of the Arduino UNO and I2C module
• pin2: Connected to PIN of the buzzer

Resistor (100 Ohms)

• pin1: Connected to D9 of the Arduino UNO
• pin2: Connected to pin1 of the 10k Ohm resistor and Gate of the IRFZ44N

Pushbutton

• Pin 1: Connected to A1, A2, and A3 of the Arduino UNO
• Pin 4: Connected to pin1 of the 10k Ohm resistor and GND of the Arduino UNO and I2C module

I2C Module

• SCL: Connected to A5 of the Arduino UNO
• SDA: Connected to A4 of the Arduino UNO
• VCC: Connected to 5V of the Arduino UNO and A1 of the NTC
• GND: Connected to GND of the Arduino UNO and pin1 of the 10k Ohm resistor

16X2 LCD

• VSS: Not connected
• VDD: Not connected
• V0: Not connected
• RS: Not connected
• RW: Not connected
• E: Not connected
• D0: Not connected
• D1: Not connected
• D2: Not connected
• D3: Not connected
• D4: Not connected
• D5: Not connected
• D6: Not connected
• D7: Not connected
• A: Not connected
• K: Not connected

1N4007 Rectifier Diode

• Cathode: Connected to 5V of the fan and Vin of the Arduino UNO
• Anode: Connected to Drain of the IRFZ44N and GND of the fan

12V Power Supply

• +: Connected to 5V of the fan and Vin of the Arduino UNO
• -: Connected to GND of the Arduino UNO

Buzzer

• PIN: Connected to pin2 of the 10k Ohm resistor and Source of the IRFZ44N
• GND: Connected to D13 of the Arduino UNO

Fan

• 5V: Connected to + of the 12V power supply and Vin of the Arduino UNO
• GND: Connected to Drain of the IRFZ44N and Anode of the 1N4007 Rectifier Diode

Arduino UNO

• 5V: Connected to VCC of the I2C module and A1 of the NTC
• GND: Connected to - of the 12V power supply, pin1 of the 10k Ohm resistor, and Source of the IRFZ44N
• Vin: Connected to 5V of the fan and + of the 12V power supply
• A0: Connected to A0 of the NTC
• A1: Connected to Pin 1 of a pushbutton
• A2: Connected to Pin 1 of a pushbutton
• A3: Connected to Pin 1 of a pushbutton
• A4: Connected to SDA of the I2C module
• A5: Connected to SCL of the I2C module
• D9: Connected to pin1 of the 100 Ohm resistor
• D13: Connected to GND of the buzzer

NTC

• A0: Connected to A0 of the Arduino UNO
• A1: Connected to 5V of the Arduino UNO and VCC of the I2C module

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:

}

Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including a detailed list of components, their wiring connections, and the code used in the Arduino UNO microcontroller.