Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes various components such as DC motors with encoders, an L298N DC motor driver, an MPU-6050 sensor, an ESP32 microcontroller, an XL4015 DC buck step-down converter, and a pair of 18650 Li-ion batteries. The circuit is designed to control DC motors using the ESP32 microcontroller, with feedback from the encoders and orientation data from the MPU-6050 sensor. The L298N motor driver is used to drive the motors, and the XL4015 step-down converter regulates the power supply from the batteries.

Component List

DC Motor with Encoder

• Pins: Encoder B, Encoder A, GND - Encoder, VCC - Encoder Power, Motor +ve, Motor -ve
• Description: A DC motor with an integrated encoder for feedback on motor position and speed.

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 that can control the speed and direction of two DC motors.

MPU-6050

• Pins: VCC, GND, SCL, SDA, XDA, XCL, AD0, INT
• Description: A 6-axis motion tracking device that combines a 3-axis gyroscope and a 3-axis accelerometer.

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 powerful microcontroller with integrated Wi-Fi and Bluetooth capabilities.

XL4015 5A DC Buck Step-down

• Pins: Output +, Output -, Input +, Input -
• Description: A DC-DC buck converter that steps down voltage from a higher level to a lower level.

18650 Li-ion Battery x 2

• Pins: +, -
• Description: Rechargeable lithium-ion batteries commonly used in portable electronics.

Wiring Details

DC Motor with Encoder (Instance 1)

• Encoder B: Connected to ESP32 pin 27
• Encoder A: Connected to ESP32 pin 26
• GND - Encoder: Connected to L298N GND, XL4015 Output -, and DC Motor with Encoder (Instance 2) GND - Encoder
• VCC - Encoder Power: Connected to L298N 12V, XL4015 Output +, and DC Motor with Encoder (Instance 2) VCC - Encoder Power
• Motor +ve: Connected to L298N OUT1
• Motor -ve: Connected to L298N OUT2

DC Motor with Encoder (Instance 2)

• Encoder B: Connected to ESP32 pin 17/TX2
• Encoder A: Connected to ESP32 pin 16/RX2
• GND - Encoder: Connected to L298N GND, XL4015 Output -, and DC Motor with Encoder (Instance 1) GND - Encoder
• VCC - Encoder Power: Connected to L298N 12V, XL4015 Output +, and DC Motor with Encoder (Instance 1) VCC - Encoder Power
• Motor +ve: Connected to L298N OUT4
• Motor -ve: Connected to L298N OUT3

L298N DC Motor Driver

• IN3: Connected to ESP32 pin 19
• IN4: Connected to ESP32 pin 18
• ENB: Connected to ESP32 pin 5
• IN2: Connected to ESP32 pin 33
• IN1: Connected to ESP32 pin 25
• ENA: Connected to ESP32 pin 14
• OUT1: Connected to DC Motor with Encoder (Instance 1) Motor +ve
• OUT2: Connected to DC Motor with Encoder (Instance 1) Motor -ve
• OUT3: Connected to DC Motor with Encoder (Instance 2) Motor -ve
• OUT4: Connected to DC Motor with Encoder (Instance 2) Motor +ve
• 12V: Connected to XL4015 Output +, DC Motor with Encoder (Instance 1) VCC - Encoder Power, and DC Motor with Encoder (Instance 2) VCC - Encoder Power
• GND: Connected to XL4015 Output -, DC Motor with Encoder (Instance 1) GND - Encoder, and DC Motor with Encoder (Instance 2) GND - Encoder

MPU-6050

• GND: Connected to ESP32 GND
• SCL: Connected to ESP32 pin 22/SCL
• SDA: Connected to ESP32 pin 21/SDA
• VCC: Connected to ESP32 3V3

ESP32 38 PINS

• GND: Connected to MPU-6050 GND
• 22/SCL: Connected to MPU-6050 SCL
• 21/SDA: Connected to MPU-6050 SDA
• 19: Connected to L298N IN3
• 18: Connected to L298N IN4
• 5: Connected to L298N ENB
• 17/TX2: Connected to DC Motor with Encoder (Instance 2) Encoder B
• 16/RX2: Connected to DC Motor with Encoder (Instance 2) Encoder A
• 3V3: Connected to MPU-6050 VCC
• 33: Connected to L298N IN2
• 25: Connected to L298N IN1
• 26: Connected to DC Motor with Encoder (Instance 1) Encoder A
• 27: Connected to DC Motor with Encoder (Instance 1) Encoder B
• 14: Connected to L298N ENA

XL4015 5A DC Buck Step-down

• Output +: Connected to L298N 12V, DC Motor with Encoder (Instance 1) VCC - Encoder Power, and DC Motor with Encoder (Instance 2) VCC - Encoder Power
• Output -: Connected to L298N GND, DC Motor with Encoder (Instance 1) GND - Encoder, and DC Motor with Encoder (Instance 2) GND - Encoder
• Input +: Connected to 18650 Li-ion Battery + terminal
• Input -: Connected to 18650 Li-ion Battery - terminal

18650 Li-ion Battery x 2

• +: Connected to XL4015 Input +
• -: Connected to XL4015 Input -

Code

No code is provided for this circuit.

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This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code section. Each component is described, and the wiring details are provided to ensure proper connections between components.