Circuit Documentation

Summary

This document provides a detailed overview of a circuit designed to interface various components with an ESP32 microcontroller. The circuit includes power supply elements, a current sensor, a relay, LEDs, resistors, and an LCD display. The ESP32 serves as the central processing unit, controlling the relay and LEDs, and receiving data from the current sensor. The circuit is powered by a 12V power supply, which is regulated down to the voltage levels appropriate for the ESP32 and other components.

Component List

AC Wall Plug Point

• Description: Provides AC power from a standard wall outlet.
• Pins: Earth (E), Neutral (N), Line (L)

ESP32

• Description: A microcontroller with Wi-Fi and Bluetooth capabilities.
• Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, VIN, 3V3, D15, D2, D4, RX2, TX2, D5, D18, D19, D21, RX0, TX0, D22, D23, BOOT

2.1mm DC Barrel Jack

• Description: A connector for DC power input.
• Pins: Switch, Sleeve, Center

Rocker Switch

• Description: A switch to control the power flow.
• Pins: Output, Input

Resistor (200 Ohms)

• Description: Limits current or divides voltage.
• Properties: Resistance: 200 Ohms

16X2 LCD

• Description: A liquid crystal display for showing information.
• Pins: VSS, VDD, V0, RS, RW, E, D0-D7, A, K

2.1mm Barrel Jack with Terminal Block

• Description: A connector for attaching wires to a barrel jack.
• Pins: Positive (POS), Negative (NEG)

ACS712 Current Sensor

• Description: Measures current passing through it.
• Pins: 1, 2, GND, OUT, VCC

5V Relay

• Description: An electromechanical switch controlled by an electrical signal.
• Pins: Normally Open (NO), Common terminal (COM), Normally Closed (NC), Input (In), GND, VCC

Socket

• Description: A connector for plugging in devices.
• Pins: Earth, Life, Neutral

LED: Two Pin (Green)

• Description: A green light-emitting diode.
• Pins: Cathode, Anode

LED: Two Pin (Red)

• Description: A red light-emitting diode.
• Pins: Cathode, Anode

POWER SUPPLY 12V 5AMP

• Description: Provides a 12V DC output from a 220V AC input.
• Pins: 220V Positive Pole (AC), 220V Negative Pole (AC), GND, GND (DC), 12V-24V Output (DC)

Wiring Details

AC Wall Plug Point

• Earth (E) connected to the earth pins of sockets and GND of the power supply.
• Neutral (N) connected to the neutral pins of sockets and 220V Negative Pole (AC) of the power supply.
• Line (L) connected to the Line pin of the ACS712 Current Sensor.

ESP32

• D34 connected to a 200 Ohm resistor.
• GND connected to the sleeve of the DC Barrel Jack, VSS and K of the LCD, GND of the relay, and GND of the ACS712 Current Sensor.
• VIN connected to the center of the DC Barrel Jack, VDD and A of the LCD, and VCC of the relay.
• 3V3 connected to VCC of the ACS712 Current Sensor.
• D27 connected to the anode of the red LED.
• D14 connected to the anode of the green LED.
• D21 connected to RS of the LCD.
• D22 connected to E of the LCD.
• D26 connected to the input of the relay.

2.1mm DC Barrel Jack

• Sleeve connected to GND of the ESP32 and other components.
• Center connected to VIN of the ESP32 and other components.

Rocker Switch

• Output connected to the NEG of the Barrel Jack with Terminal Block.
• Input connected to the POS of the Barrel Jack with Terminal Block.

Resistor (200 Ohms)

• One end connected to the OUT of the ACS712 Current Sensor.
• The other end connected to another 200 Ohm resistor and D34 of the ESP32.

16X2 LCD

• VSS connected to GND of the ESP32.
• VDD connected to VIN of the ESP32.
• RS connected to D21 of the ESP32.
• E connected to D22 of the ESP32.
• A connected to VIN of the ESP32.
• K connected to GND of the ESP32.

ACS712 Current Sensor

• OUT connected to a 200 Ohm resistor.
• VCC connected to 3V3 of the ESP32.
• GND connected to GND of the ESP32.
• 1 connected to the Common terminal of the relay.
• 2 connected to the 220V Positive Pole (AC) of the power supply.

5V Relay

• GND connected to GND of the ESP32.
• VCC connected to VIN of the ESP32.
• In connected to D26 of the ESP32.
• Common terminal connected to 1 of the ACS712 Current Sensor.
• Normally Open connected to the life pins of the sockets.

LED: Two Pin (Green)

• Cathode connected to GND of the ESP32.
• Anode connected to D14 of the ESP32.

LED: Two Pin (Red)

• Cathode connected to GND of the ESP32.
• Anode connected to D27 of the ESP32.

POWER SUPPLY 12V 5AMP

• GND connected to the earth pins of sockets and the NEG of the Barrel Jack with Terminal Block.
• 220V Negative Pole (AC) connected to the neutral pins of sockets.
• 220V Positive Pole (AC) connected to 2 of the ACS712 Current Sensor.
• GND (DC) connected to the NEG of the Barrel Jack with Terminal Block.
• 12V-24V Output (DC) connected to the POS of the Barrel Jack with Terminal Block.

Documented Code

ESP32 Microcontroller Code (Instance ID: 79c68616-4cab-4018-9729-178f6e3c537b)

void setup() {
  // Initialize the digital pins as outputs:
  pinMode(D34, OUTPUT);
  pinMode(D27, OUTPUT);
  pinMode(D14, OUTPUT);
  pinMode(D21, OUTPUT);
  pinMode(D22, OUTPUT);
  pinMode(D26, OUTPUT);
}

void loop() {
  // Example code to blink the LEDs and control the relay:
  digitalWrite(D27, HIGH);   // Turn on the red LED
  digitalWrite(D14, LOW);    // Turn off the green LED
  delay(1000);               // Wait for a second
  digitalWrite(D27, LOW);    // Turn off the red LED
  digitalWrite(D14, HIGH);   // Turn on the green LED
  delay(1000);               // Wait for a second
  
  // Control the relay:
  digitalWrite(D26, HIGH);   // Activate the relay
  delay(2000);               // Wait for 2 seconds
  digitalWrite(D26, LOW);    // Deactivate the relay
}

(Note: The provided code is a basic example. The actual application code will depend on the specific requirements of the circuit's use case.)

Additional Notes

• The code for the microcontroller with instance ID e31e1091-0e03-4bda-a7e5-c5fb826ad69f is not provided or is empty.
• The code for the microcontroller with instance ID 9e51578d-f743-4ad7-b04b-1fac35904470 is a template without specific functionality.

Please ensure that the actual application code is written and uploaded to the microcontrollers for the circuit to perform its intended functions.