Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as an Arduino UNO, sensors, a relay module, a solar charge controller, and more. The circuit is designed to interface with multiple sensors and actuators, powered by a solar panel and a battery, and controlled by an Arduino UNO. The document includes a component list, wiring details, and the embedded code used in the microcontroller.

Component List

16x2 I2C LCD

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

MG996R

• Description: A high-torque servo motor.
• Pins: GND, VCC, SIG

1 Channel 5V Relay Module

• Description: A single-channel relay module for switching high-power devices.
• Pins: VCC+, VCC- (GND), IN, N.O., COM, N.C.

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

LJC18A3-B-Z/BY Capacitive Proximity Sensor

• Description: A capacitive proximity sensor for detecting objects.
• Pins: VO (BLU), VI (BRN), SIG (BLK)

HC-SR04 Ultrasonic Sensor

• Description: An ultrasonic distance sensor.
• Pins: VCC, TRIG, ECHO, GND

Solar Charge Controller

• Description: A controller for managing solar panel charging.
• Pins: Solar Cell +, Solar Cell -, Battery +, Battery -, Load +, Load -

Step down Buck converter

• Description: A DC-DC converter for stepping down voltage.
• Pins: IN +, IN - GND, OUT +, OUT - GND

USB Female

• Description: A USB female connector.
• Pins: VCC, GND, -D, +D

Solar Panel

• Description: A solar panel for generating electrical power.
• Pins: +, -

12V 200Ah Battery

• Description: A 12V 200Ah battery for storing electrical energy.
• Pins: GND, 12V

Wiring Details

16x2 I2C LCD

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

MG996R

• GND: Connected to Arduino UNO D12
• VCC: Connected to Arduino UNO 5V
• SIG: Connected to Arduino UNO GND

1 Channel 5V Relay Module

• VCC+: Connected to Arduino UNO 5V
• VCC- (GND): Connected to Arduino UNO GND
• IN: Connected to Arduino UNO D7
• N.O.: Not connected
• COM: Connected to Solar Charge Controller Load +
• N.C.: Connected to Step down Buck converter IN +

Arduino UNO

• GND: Connected to MG996R SIG, LJC18A3-B-Z/BY Capacitive Proximity Sensor VO (BLU), HC-SR04 Ultrasonic Sensor GND, 1 Channel 5V Relay Module VCC- (GND), 16x2 I2C LCD GND
• 5V: Connected to MG996R VCC, LJC18A3-B-Z/BY Capacitive Proximity Sensor VI (BRN), HC-SR04 Ultrasonic Sensor VCC, 1 Channel 5V Relay Module VCC+, 16x2 I2C LCD VCC
• A4: Connected to 16x2 I2C LCD SDA
• A5: Connected to 16x2 I2C LCD SCL
• D12: Connected to MG996R GND
• D8: Connected to HC-SR04 Ultrasonic Sensor TRIG
• D9: Connected to HC-SR04 Ultrasonic Sensor ECHO
• D7: Connected to 1 Channel 5V Relay Module IN
• D11: Connected to LJC18A3-B-Z/BY Capacitive Proximity Sensor SIG (BLK)

LJC18A3-B-Z/BY Capacitive Proximity Sensor

• VO (BLU): Connected to Arduino UNO GND
• VI (BRN): Connected to Arduino UNO 5V
• SIG (BLK): Connected to Arduino UNO D11

HC-SR04 Ultrasonic Sensor

• VCC: Connected to Arduino UNO 5V
• TRIG: Connected to Arduino UNO D8
• ECHO: Connected to Arduino UNO D9
• GND: Connected to Arduino UNO GND

Solar Charge Controller

• Solar Cell +: Connected to Solar Panel +
• Solar Cell -: Connected to Solar Panel -
• Battery +: Connected to 12V 200Ah Battery 12V
• Battery -: Connected to 12V 200Ah Battery GND
• Load +: Connected to 1 Channel 5V Relay Module COM
• Load -: Connected to Step down Buck converter IN - GND

Step down Buck converter

• IN +: Connected to 1 Channel 5V Relay Module N.C.
• IN - GND: Connected to Solar Charge Controller Load -
• OUT +: Connected to USB Female +D
• OUT - GND: Connected to USB Female -D

USB Female

• VCC: Not connected
• GND: Not connected
• -D: Connected to Step down Buck converter OUT - GND
• +D: Connected to Step down Buck converter OUT +

Solar Panel

• +: Connected to Solar Charge Controller Solar Cell +
• -: Connected to Solar Charge Controller Solar Cell -

12V 200Ah Battery

• GND: Connected to Solar Charge Controller Battery -
• 12V: Connected to Solar Charge Controller Battery +

Documented Code

Arduino UNO Code

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

}

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

}

This concludes the documentation for the circuit. Each component is described along with its wiring details, and the code for the Arduino UNO is provided.