Circuit Documentation

Summary

This circuit consists of various components including servos, DC motors, a buck converter, a 12V battery, an ESP32 microcontroller, and an L298N DC motor driver. The circuit is designed to control multiple motors and servos using the ESP32 microcontroller, with power regulation provided by a buck converter and a 12V battery as the power source.

Component List

1. Servo

   • Pins: gnd, vcc, pulse
   • Description: A servo motor used for precise control of angular position.
   • Purpose in Circuit: To control the angular position of a mechanical component.

2. DC Motor

   • Pins: pin 1, pin 2
   • Description: A DC motor used for continuous rotation.
   • Purpose in Circuit: To provide rotational motion.

3. Buck Converter

   • Pins: IN+, IN-, OUT+, OUT-
   • Description: A DC-DC converter used to step down voltage.
   • Purpose in Circuit: To regulate the voltage supplied to other components.

4. 12V Battery

   • Pins: +, -
   • Description: A power source providing 12V DC.
   • Purpose in Circuit: To supply power to the circuit.

5. ESP32 38 PINS

   • Pins: GND, 23, 22/SCL, 1, 2, 21/SDA, 19, 18, 5, 17/TX2, 16/RX2, 4, 0, 15, D1, D0, CLK, 3V3, EN, VP, VN, 34, 35, 32, 33, 25, 26, 27, 14, 12, 13, D2, D3, 11, 5V/VIN
   • Description: A microcontroller with Wi-Fi and Bluetooth capabilities.
   • Purpose in Circuit: To control the motors and servos.

6. L298N DC 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
   • Description: A dual H-bridge motor driver.
   • Purpose in Circuit: To drive the DC motors.

Wiring Details

Servo

• Servo 1

  • gnd connected to ESP32 GND, L298N GND, Buck converter IN-, Buck converter OUT-, 12V Battery -
  • vcc connected to Servo 2 vcc, Buck converter OUT+
  • pulse connected to ESP32 pin 27

• Servo 2

  • gnd connected to ESP32 GND, L298N GND, Buck converter IN-, Buck converter OUT-, 12V Battery -
  • vcc connected to Servo 1 vcc, Buck converter OUT+
  • pulse connected to ESP32 pin 5

DC Motor

• DC Motor 1

  • pin 1 connected to L298N OUT3
  • pin 2 connected to L298N OUT4

• DC Motor 2

  • pin 1 connected to L298N OUT3
  • pin 2 connected to L298N OUT4

• DC Motor 3

  • pin 1 connected to L298N OUT2
  • pin 2 connected to L298N OUT1

Buck Converter

• IN+ connected to L298N 12V, 12V Battery +
• IN- connected to ESP32 GND, L298N GND, Servo 1 gnd, Servo 2 gnd, Buck converter OUT-, 12V Battery -
• OUT+ connected to Servo 1 vcc, Servo 2 vcc
• OUT- connected to ESP32 GND, L298N GND, Servo 1 gnd, Servo 2 gnd, Buck converter IN-, 12V Battery -

12V Battery

• + connected to L298N 12V, Buck converter IN+
• - connected to ESP32 GND, L298N GND, Servo 1 gnd, Servo 2 gnd, Buck converter IN-, Buck converter OUT-

ESP32 38 PINS

• GND connected to Servo 1 gnd, L298N GND, Servo 2 gnd, Buck converter IN-, Buck converter OUT-, 12V Battery -
• 5V/VIN connected to L298N 5V
• 22/SCL connected to L298N ENA
• 16/RX2 connected to L298N IN1
• 17/TX2 connected to L298N IN2
• 18 connected to L298N IN3
• 19 connected to L298N IN4
• 23 connected to L298N ENB
• 27 connected to Servo 1 pulse
• 5 connected to Servo 2 pulse

L298N DC Motor Driver

• OUT1 connected to DC Motor 3 pin 2
• OUT2 connected to DC Motor 3 pin 1
• 12V connected to Buck converter IN+, 12V Battery +
• GND connected to ESP32 GND, Servo 1 gnd, Servo 2 gnd, Buck converter IN-, Buck converter OUT-, 12V Battery -
• 5V connected to ESP32 5V/VIN
• OUT3 connected to DC Motor 1 pin 1, DC Motor 2 pin 1
• OUT4 connected to DC Motor 1 pin 2, DC Motor 2 pin 2
• ENA connected to ESP32 pin 22/SCL
• IN1 connected to ESP32 pin 16/RX2
• IN2 connected to ESP32 pin 17/TX2
• IN3 connected to ESP32 pin 18
• IN4 connected to ESP32 pin 19
• ENB connected to ESP32 pin 23

Code

No code provided.