Circuit Documentation

Summary

This circuit involves an Arduino Nano microcontroller interfacing with various components including a 16x2 I2C LCD, multiple ZMPT101B voltage sensors, a 4-channel relay module, pilot lamps, and a power supply unit. The Arduino Nano controls the relays and reads data from the voltage sensors, displaying relevant information on the LCD. The circuit is powered by an AC-DC PSU board that converts 220V AC to 5V and 12V DC.

Component List

Arduino Nano

• Description: A small, complete, and breadboard-friendly board based on the ATmega328P.
• 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

16x2 I2C LCD

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

ZMPT101B

• Description: A voltage sensor module for AC voltage measurement.
• Pins: OUT, GND, VCC, NEUTRO, FASE

Relay 4 Channel 5v

• Description: A 4-channel relay module for controlling high voltage devices.
• Pins: GND, IN1, IN2, IN3, IN4, VCC, COM1, COM2, COM3, COM4, NO1, NO2, NO3, NO4, NC1, NC2, NC3, NC4

Pilot Lamp Blue

• Description: A blue pilot lamp for indicating status.
• Pins: x1, x2

Pilot Lamp Red

• Description: A red pilot lamp for indicating status.
• Pins: X1, X2

Pilot Lamp Green

• Description: A green pilot lamp for indicating status.
• Pins: X1, X2

Power 220v

• Description: A 220V AC power source.
• Pins: hot wire, neutral wire

AC-DC PSU board 220V-5V&12V

• Description: A power supply unit that converts 220V AC to 5V and 12V DC.
• Pins: AC-N, AC-L, +5V, GND, +12V

Trimmer Potentiometer

• Description: A variable resistor used for adjusting voltage levels.
• Pins: leg1, wiper, leg2
• Properties: Resistance: 10000 Ohms

Wiring Details

Arduino Nano

• GND: Connected to GND of ZMPT101B (3 units), 16x2 I2C LCD, Relay 4 Channel 5v, and AC-DC PSU board.
• D2: Connected to IN1 of Relay 4 Channel 5v.
• D3: Connected to IN2 of Relay 4 Channel 5v.
• D4: Connected to IN3 of Relay 4 Channel 5v.
• D5: Connected to IN4 of Relay 4 Channel 5v.
• VIN: Connected to +5V of AC-DC PSU board.
• 5V: Connected to VCC of ZMPT101B (3 units), 16x2 I2C LCD, and Relay 4 Channel 5v.
• A5: Connected to SCL of 16x2 I2C LCD.
• A4: Connected to SDA of 16x2 I2C LCD.
• A2: Connected to OUT of ZMPT101B.
• A1: Connected to OUT of ZMPT101B.
• A0: Connected to OUT of ZMPT101B.

16x2 I2C LCD

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

ZMPT101B

• GND: Connected to GND of Arduino Nano.
• VCC: Connected to 5V of Arduino Nano.
• OUT: Connected to A2, A1, and A0 of Arduino Nano.
• NEUTRO: Connected to neutral wire of power 220v, Pilot Lamp Green, Pilot Lamp Blue, Pilot Lamp Red, and AC-N of AC-DC PSU board.
• FASE: Connected to wiper of Trimmer Potentiometer.

Relay 4 Channel 5v

• GND: Connected to GND of Arduino Nano.
• IN1: Connected to D2 of Arduino Nano.
• IN2: Connected to D3 of Arduino Nano.
• IN3: Connected to D4 of Arduino Nano.
• IN4: Connected to D5 of Arduino Nano.
• VCC: Connected to 5V of Arduino Nano.
• COM1, COM2, COM3, COM4: Connected to leg2 of Trimmer Potentiometer and hot wire of power 220v.
• NO1: Connected to X1 of Pilot Lamp Green.
• NO2: Connected to X1 of Pilot Lamp Red.
• NO3: Connected to x1 of Pilot Lamp Blue.
• NO4: Connected to hot wire of power 220v.

Pilot Lamp Blue

• x1: Connected to NO3 of Relay 4 Channel 5v.
• x2: Connected to neutral wire of power 220v.

Pilot Lamp Red

• X1: Connected to NO2 of Relay 4 Channel 5v.
• X2: Connected to neutral wire of power 220v.

Pilot Lamp Green

• X1: Connected to NO1 of Relay 4 Channel 5v.
• X2: Connected to neutral wire of power 220v.

Power 220v

• hot wire: Connected to leg2 of Trimmer Potentiometer and NO4 of Relay 4 Channel 5v.
• neutral wire: Connected to NEUTRO of ZMPT101B, Pilot Lamp Green, Pilot Lamp Blue, Pilot Lamp Red, and AC-N of AC-DC PSU board.

AC-DC PSU board 220V-5V&12V

• AC-N: Connected to neutral wire of power 220v.
• AC-L: Connected to leg2 of Trimmer Potentiometer.
• +5V: Connected to VIN of Arduino Nano.
• GND: Connected to GND of Arduino Nano.

Trimmer Potentiometer

• leg1: Not connected.
• wiper: Connected to FASE of ZMPT101B.
• leg2: Connected to hot wire of power 220v and AC-L of AC-DC PSU board.

Code Documentation

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:

}

documentation.txt

This documentation provides a comprehensive overview of the circuit, including a detailed component list, wiring details, and the code used in the Arduino Nano.