Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes a SparkFun ESP8266 Thing - Dev Board, an L298N DC motor driver, two motors with reducers, and a 4 x AAA Battery Mount. The ESP8266 microcontroller is used to control the motors via the L298N motor driver. The circuit is powered by a 4 x AAA battery pack.

Component List

1. SparkFun ESP8266 Thing - Dev Board

   • Description: A development board based on the ESP8266 WiFi microcontroller.
   • Pins: GND, VCC, GPIO2, GPIO14, RESET, U0TXO, U0RXI, USBVCC, 9, VIN, GPIO5, GPIO0, GPIO4, GPIO13, GPIO12, GPIO16, ADC, GPIO15

2. L298N DC Motor Driver

   • Description: A dual H-bridge motor driver that allows control of two DC motors.
   • 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

3. Motor with Reducer (Motor 1)

   • Description: A DC motor with a gear reducer.
   • Pins: 3 - 6 VCC, GND

4. Motor with Reducer (Motor 2)

   • Description: A DC motor with a gear reducer.
   • Pins: 3 - 6 VCC, GND

5. 4 x AAA Battery Mount

   • Description: A battery holder for four AAA batteries.
   • Pins: -, +

Wiring Details

SparkFun ESP8266 Thing - Dev Board

• GND is connected to GND of the L298N DC motor driver.
• GPIO12 is connected to IN4 of the L298N DC motor driver.
• GPIO13 is connected to IN2 of the L298N DC motor driver.
• GPIO4 is connected to IN1 of the L298N DC motor driver.
• GPIO5 is connected to IN3 of the L298N DC motor driver.
• VIN is connected to + of the 4 x AAA Battery Mount.
• GND is connected to - of the 4 x AAA Battery Mount.

L298N DC Motor Driver

• GND is connected to GND of the SparkFun ESP8266 Thing - Dev Board.
• IN4 is connected to GPIO12 of the SparkFun ESP8266 Thing - Dev Board.
• IN2 is connected to GPIO13 of the SparkFun ESP8266 Thing - Dev Board.
• IN1 is connected to GPIO4 of the SparkFun ESP8266 Thing - Dev Board.
• IN3 is connected to GPIO5 of the SparkFun ESP8266 Thing - Dev Board.
• OUT1 is connected to 3 - 6 VCC of Motor 1.
• OUT2 is connected to GND of Motor 1.
• OUT3 is connected to 3 - 6 VCC of Motor 2.
• OUT4 is connected to GND of Motor 2.

Motor with Reducer (Motor 1)

• 3 - 6 VCC is connected to OUT1 of the L298N DC motor driver.
• GND is connected to OUT2 of the L298N DC motor driver.

Motor with Reducer (Motor 2)

• 3 - 6 VCC is connected to OUT3 of the L298N DC motor driver.
• GND is connected to OUT4 of the L298N DC motor driver.

4 x AAA Battery Mount

• + is connected to VIN of the SparkFun ESP8266 Thing - Dev Board.
• - is connected to GND of the SparkFun ESP8266 Thing - Dev Board.

Code

No code is provided for this circuit.