Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes a Raspberry Pi Pico microcontroller, an L298N DC motor driver, a 4 x AAA battery mount, two DG01D-E motors, an Adafruit Precision 9-DoF sensor, and a rocker switch. The circuit is designed to control the motors and read sensor data, with power supplied by the battery mount.

Component List

Raspberry Pi Pico

• Description: A microcontroller board based on the RP2040 microcontroller chip.
• Pins: 43 pins including GPIO, power, and ground pins.

L298N DC Motor Driver

• Description: A dual H-Bridge motor driver that allows control of the speed and direction 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.

4 x AAA Battery Mount

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

DG01D-E Motor

• Description: A DC motor with Hall effect sensors for speed feedback.
• Pins: Motor Power -, Motor Power +, Hall Power +, Hall Power -, Hall 1 Output, Hall 2 Output.

Adafruit Precision 9-DoF LIS3MDL + LSM6DSOX

• Description: A 9-DoF sensor that includes a magnetometer and an accelerometer/gyroscope.
• Pins: ADAG, ADM, DRDY, INTM, INT1, VCC, 3.3V, GND, SCL, SDA, INT2.

Rocker Switch

• Description: A simple on/off switch.
• Pins: 1, 2.

Wiring Details

Raspberry Pi Pico

• pin 21 connected to Adafruit Precision 9-DoF LIS3MDL + LSM6DSOX SDA
• pin 20 connected to L298N DC motor driver ENA
• pin 22 connected to Adafruit Precision 9-DoF LIS3MDL + LSM6DSOX SCL
• pin 19 connected to L298N DC motor driver ENB
• pin 17 connected to L298N DC motor driver IN3
• pin 16 connected to L298N DC motor driver IN4
• pin 15 connected to L298N DC motor driver IN1
• pin 14 connected to L298N DC motor driver IN2
• pin 7 connected to DG01D-E Hall 2 Output
• pin 6 connected to DG01D-E Hall 1 Output
• pin 36 connected to Adafruit Precision 9-DoF LIS3MDL + LSM6DSOX 3.3V, DG01D-E Hall Power +
• pin 5 connected to DG01D-E Hall 2 Output
• pin 4 connected to DG01D-E Hall 1 Output
• pin 38 connected to Adafruit Precision 9-DoF LIS3MDL + LSM6DSOX GND, DG01D-E Hall Power -, L298N DC motor driver GND, 4 x AAA Battery Mount -, DG01D-E Hall Power -

L298N DC Motor Driver

• OUT1 connected to DG01D-E Motor Power +
• OUT2 connected to DG01D-E Motor Power -
• OUT3 connected to DG01D-E Motor Power +
• OUT4 connected to DG01D-E Motor Power -
• 12V connected to Rocker Switch 1

4 x AAA Battery Mount

• + connected to Rocker Switch 2

DG01D-E Motor

• Motor Power + connected to L298N DC motor driver OUT1
• Motor Power - connected to L298N DC motor driver OUT2
• Hall Power + connected to Raspberry Pi Pico pin 36
• Hall Power - connected to Raspberry Pi Pico pin 38
• Hall 1 Output connected to Raspberry Pi Pico pin 6
• Hall 2 Output connected to Raspberry Pi Pico pin 7

DG01D-E Motor (Second Instance)

• Motor Power + connected to L298N DC motor driver OUT3
• Motor Power - connected to L298N DC motor driver OUT4
• Hall Power + connected to Raspberry Pi Pico pin 36
• Hall Power - connected to Raspberry Pi Pico pin 38
• Hall 1 Output connected to Raspberry Pi Pico pin 4
• Hall 2 Output connected to Raspberry Pi Pico pin 5

Adafruit Precision 9-DoF LIS3MDL + LSM6DSOX

• SDA connected to Raspberry Pi Pico pin 21
• SCL connected to Raspberry Pi Pico pin 22
• 3.3V connected to Raspberry Pi Pico pin 36
• GND connected to Raspberry Pi Pico pin 38

Rocker Switch

• 1 connected to L298N DC motor driver 12V
• 2 connected to 4 x AAA Battery Mount +

Documented Code

Raspberry Pi Pico 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 the components used, their connections, and the code running on the Raspberry Pi Pico.