Circuit Documentation

Summary

This circuit involves an Arduino Mega 2560 microcontroller interfacing with multiple components including trimming potentiometers, photocells (LDRs), resistors, a WS2812 RGB LED strip, an L298N DC motor driver, and hobby motors. The circuit is designed to read analog signals from the potentiometers and photocells, control the LED strip, and drive the motors using the motor driver.

Component List

TSR-3386UT Square Trimming Potentiometer

• Description: Trimming potentiometer used for adjusting resistance.
• Pins: Leg1, wiper, Leg2

Photocell (LDR)

• Description: Light-dependent resistor used to measure light intensity.
• Pins: pin 0, pin 1

Resistor

• Description: Fixed resistor with a resistance of 10k Ohms.
• Pins: pin1, pin2
• Properties:
  • Resistance: 10k Ohms

Arduino Mega 2560

• Description: Microcontroller board based on the ATmega2560.
• Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D0-D53, PWM pins, AREF, SDA, SCL

WS2812 RGB LED strip

• Description: Addressable RGB LED strip.
• Pins: DIN, 5V, GND, DO

L298N DC motor driver

• Description: Dual H-Bridge motor driver.
• Pins: OUT1, OUT2, 12V, GND, 5V, OUT3, OUT4, 5V-ENA-JMP-I, 5V-ENA-JMP-O, +5V-J1, +5V-J2, ENA, IN1, IN2, IN3, IN4, ENB

Motor amarillo motorreductor hobby

• Description: Hobby motor with gearbox.
• Pins: vcc, GND

3xAABattery

• Description: Battery pack providing power to the circuit.
• Pins: VCC, GND

Wiring Details

TSR-3386UT Square Trimming Potentiometer

• Leg2 is connected to:

  • Leg2 of other trimming potentiometers
  • GND of WS2812 RGB LED strip
  • GND of Arduino Mega 2560
  • pin 1 of all photocells

• wiper is connected to:

  • A3 of Arduino Mega 2560 (for one potentiometer)
  • A2 of Arduino Mega 2560 (for another potentiometer)
  • A1 of Arduino Mega 2560 (for another potentiometer)
  • A0 of Arduino Mega 2560 (for another potentiometer)

• Leg1 is connected to:

  • Leg1 of other trimming potentiometers
  • pin1 of all resistors
  • 5V of WS2812 RGB LED strip
  • 5V of Arduino Mega 2560

Photocell (LDR)

• pin 0 is connected to:

  • pin2 of corresponding resistors
  • A14 to A8 of Arduino Mega 2560 (one for each photocell)

• pin 1 is connected to:

  • GND of Arduino Mega 2560
  • GND of WS2812 RGB LED strip
  • Leg2 of all trimming potentiometers

Resistor

• pin1 is connected to:

  • Leg1 of all trimming potentiometers
  • pin1 of other resistors
  • 5V of WS2812 RGB LED strip
  • 5V of Arduino Mega 2560

• pin2 is connected to:

  • pin 0 of corresponding photocells
  • A14 to A8 of Arduino Mega 2560 (one for each resistor)

Arduino Mega 2560

• GND is connected to:

  • GND of WS2812 RGB LED strip
  • GND of L298N DC motor driver
  • GND of 3xAABattery
  • pin 1 of all photocells

• 5V is connected to:

  • 5V of WS2812 RGB LED strip
  • pin1 of all resistors
  • Leg1 of all trimming potentiometers

• A0 to A3 are connected to:

  • wiper of corresponding trimming potentiometers

• A8 to A14 are connected to:

  • pin 0 of corresponding photocells
  • pin2 of corresponding resistors

• D2 PWM to D7 PWM are connected to:

  • ENB, IN4, IN3, IN2, IN1, ENA of L298N DC motor driver

• D9 PWM is connected to:

  • DIN of WS2812 RGB LED strip

WS2812 RGB LED strip

• DIN is connected to:

  • D9 PWM of Arduino Mega 2560

• 5V is connected to:

  • 5V of Arduino Mega 2560
  • pin1 of all resistors
  • Leg1 of all trimming potentiometers

• GND is connected to:

  • GND of Arduino Mega 2560
  • GND of L298N DC motor driver
  • pin 1 of all photocells
  • Leg2 of all trimming potentiometers

L298N DC motor driver

• ENB is connected to:

  • D2 PWM of Arduino Mega 2560

• IN4 is connected to:

  • D3 PWM of Arduino Mega 2560

• IN3 is connected to:

  • D4 PWM of Arduino Mega 2560

• IN2 is connected to:

  • D5 PWM of Arduino Mega 2560

• IN1 is connected to:

  • D6 PWM of Arduino Mega 2560

• ENA is connected to:

  • D7 PWM of Arduino Mega 2560

• GND is connected to:

  • GND of Arduino Mega 2560
  • GND of 3xAABattery

• OUT1 is connected to:

  • GND of one hobby motor

• OUT2 is connected to:

  • vcc of the same hobby motor

• OUT3 is connected to:

  • GND of another hobby motor

• OUT4 is connected to:

  • vcc of the same hobby motor

• 5V is connected to:

  • VCC of 3xAABattery

Motor amarillo motorreductor hobby

• vcc is connected to:

  • OUT2 of L298N DC motor driver (for one motor)
  • OUT4 of L298N DC motor driver (for another motor)

• GND is connected to:

  • OUT1 of L298N DC motor driver (for one motor)
  • OUT3 of L298N DC motor driver (for another motor)

3xAABattery

• VCC is connected to:

  • 5V of L298N DC motor driver

• GND is connected to:

  • GND of L298N DC motor driver
  • GND of Arduino Mega 2560

Documented Code

Arduino Mega 2560 Code

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

}

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

}

Additional Documentation

// This file is intended for additional documentation purposes.

This documentation provides a comprehensive overview of the circuit, including a detailed component list, wiring details, and the code used in the Arduino Mega 2560 microcontroller.