Circuit Documentation

Summary

This circuit consists of an Arduino Nano microcontroller, an RTC DS3231 real-time clock module, a buzzer, and a 5V power supply. The circuit is designed to interface the Arduino Nano with the RTC module for timekeeping and to control a buzzer. The power supply provides the necessary voltage to the components.

Component List

RTC DS3231

• Description: Real-Time Clock Module
• Pins: 32K, SQW, SCL, SDA, VCC, GND
• Purpose: Provides accurate timekeeping for the circuit.

Arduino Nano

• Description: Microcontroller Board
• Pins: D1/TX, D0/RX, RESET, GND, D2, D3, D4, D5, D6, D7, D8, D9, D10, D11/MOSI, D12/MISO, VIN, 5V, A7, A6, A5, A4, A3, A2, A1, A0, AREF, 3V3, D13/SCK
• Purpose: Acts as the main controller for the circuit, executing the embedded code.

Buzzer

• Description: Simple Buzzer
• Pins: PIN, GND
• Purpose: Provides audible alerts.

POWER SUPPLY 5V 5AMP

• Description: Power Supply Unit
• Pins: 220V Positive Pole (AC), 220V Negative Pole (AC), GND, GND (DC), 12V-24V Output (DC)
• Purpose: Supplies 5V DC power to the circuit components.

Power 220V

• Description: AC Power Source
• Pins: hot wire, neutral wire
• Purpose: Provides 220V AC power to the power supply unit.

Wiring Details

RTC DS3231

• SCL connected to A5 of Arduino Nano
• SDA connected to A4 of Arduino Nano
• VCC connected to 12V-24V Output (DC) of Power Supply
• GND connected to GND (DC) of Power Supply

Arduino Nano

• A5 connected to SCL of RTC DS3231
• A4 connected to SDA of RTC DS3231
• 5V connected to 12V-24V Output (DC) of Power Supply
• GND connected to GND (DC) of Power Supply
• D5 connected to PIN of Buzzer

Buzzer

• PIN connected to D5 of Arduino Nano
• GND connected to GND (DC) of Power Supply

POWER SUPPLY 5V 5AMP

• 12V-24V Output (DC) connected to 5V of Arduino Nano and VCC of RTC DS3231
• GND (DC) connected to GND of Arduino Nano, GND of RTC DS3231, and GND of Buzzer
• 220V Positive Pole (AC) connected to hot wire of Power 220V
• 220V Negative Pole (AC) connected to neutral wire of Power 220V

Power 220V

• hot wire connected to 220V Positive Pole (AC) of Power Supply
• neutral wire connected to 220V Negative Pole (AC) of Power Supply

Documented Code

Arduino Nano 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)