Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various sensors, an Arduino Nano microcontroller, MOSFETs, LED strips, resistors, and a power supply. The circuit is designed to interface with IR sensors and an LDR, control LED strips through MOSFETs, and is powered by a 12V power supply. The Arduino Nano is programmed to manage the inputs and outputs of the circuit.

Component List

1. IR Sensor

   • Pins: out, gnd, vcc
   • Description: Infrared sensor used for detecting objects.
   • Purpose: To detect objects and send a signal to the microcontroller.

2. LDR (Light Dependent Resistor)

   • Pins: A0, D0, GND, VCC
   • Description: Light sensor that changes resistance based on light intensity.
   • Purpose: To measure light intensity and send a signal to the microcontroller.

3. Arduino Nano

   • 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
   • Description: Microcontroller board based on the ATmega328.
   • Purpose: To control the circuit by processing inputs from sensors and controlling outputs.

4. MOSFET

   • Pins: Gate, Drain, Source
   • Description: Metal-Oxide-Semiconductor Field-Effect Transistor used for switching and amplifying signals.
   • Purpose: To control the power to the LED strips.

5. 12V White LED Strip

   • Pins: +12V, GND
   • Description: LED strip that operates on 12V.
   • Purpose: To provide illumination.

6. Resistor

   • Pins: pin1, pin2
   • Description: Resistor with a resistance of 200 Ohms.
   • Purpose: To limit current in the circuit.

7. 12V Power Supply

   • Pins: +, -
   • Description: Power supply providing 12V.
   • Purpose: To power the circuit.

Wiring Details

IR Sensor

• out connected to A1 of Arduino Nano
• gnd connected to GND of Arduino Nano
• vcc connected to 5V of Arduino Nano

IR Sensor

• out connected to A2 of Arduino Nano
• gnd connected to GND of Arduino Nano
• vcc connected to 5V of Arduino Nano

IR Sensor

• out connected to A3 of Arduino Nano
• gnd connected to GND of Arduino Nano
• vcc connected to 5V of Arduino Nano

LDR

• A0 connected to A0 of Arduino Nano
• D0 connected to A0 of Arduino Nano
• GND connected to GND of Arduino Nano
• VCC connected to 5V of Arduino Nano

Arduino Nano

• A1 connected to out of IR Sensor
• A2 connected to out of IR Sensor
• A3 connected to out of IR Sensor
• A0 connected to D0 of LDR
• D5 connected to pin1 of Resistor
• D6 connected to pin1 of Resistor
• D9 connected to pin1 of Resistor
• VIN connected to +12V of 12V White LED Strip and + of 12V Power Supply
• GND connected to Source of MOSFET and - of 12V Power Supply

MOSFET

• Gate connected to pin2 of Resistor
• Drain connected to GND of 12V White LED Strip
• Source connected to GND of Arduino Nano

12V White LED Strip

• +12V connected to VIN of Arduino Nano and + of 12V Power Supply
• GND connected to Drain of MOSFET

Resistor

• pin1 connected to D5, D6, and D9 of Arduino Nano
• pin2 connected to Gate of MOSFET

12V Power Supply

• + connected to +12V of 12V White LED Strip and VIN of Arduino Nano
• - connected to GND of Arduino Nano

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:

}

Documentation (documentation.txt)

This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and documented code. The circuit is designed to interface with various sensors and control LED strips using an Arduino Nano microcontroller.