Sparkfun Inventor Kit

https://learn.sparkfun.com/tutorials/sparkfun-inventors-kit-experiment-guide---v41 https://github.com/sparkfun/SIK-Guide-Code

Examples

• • Project 1: Light
  • ○ Circuit 1A: Blinking an LED
  • ○ Circuit 1B: Potentiometer
  • ○ Circuit 1C: Photoresistor
  • ○ Circuit 1D: RGB Night-Light
• • Project 2: Sound
  • ○ Circuit 2A: Buzzer
  • ○ Circuit 2B: Digital Trumpets
  • ○ Circuit 2C: “Simon Says” Game
• • Project 3: Motion
  • ○ Circuit 3A: Servo Motors
  • ○ Circuit 3B: Distance Sensor
  • ○ Circuit 3C: Motion Alarm
• • Project 4: Display
  • ○ Circuit 4A: LCD “Hello, World!”
  • ○ Circuit 4B: Temperature Sensor
  • ○ Circuit 4C: “DIY Who Am I?” Game
• • Project 5: Robot
  • Circuit 5A: Motor Basics
  • Circuit 5B: Remote-Controlled Robot
  • Circuit 5C: Autonomous Robot

Circuit 5A: Motor Basics

[12/8/24]

TB6612FNG Motor Driver

• See TB6612FNG Motor Driver

Circuit 5A: Motor Basics

In this circuit you will learn the basic concepts behind motor control. Motors require a lot of current, so you can’t drive them directly from a digital pin on the RedBoard. Instead, you’ll use what is known as a motor controller or motor driver board to power and spin the motor accordingly

• Can use a button instead of a switch

View Code

/*
 SparkFun Inventor’s Kit
 Circuit 5A - Motor Basics
 
 Learn how to control one motor with the motor driver.
 
 This sketch was written by SparkFun Electronics, with lots of help from the Arduino community.
 This code is completely free for any use.
 
 View circuit diagram and instructions at: https://learn.sparkfun.com/tutorials/sparkfun-inventors-kit-experiment-guide---v41
 Download drawings and code at: https://github.com/sparkfun/SIK-Guide-Code
*/
 
// PIN VARIABLES
// the motor will be controlled by the motor A pins on the motor driver
const int AIN1 = 13; // control pin 1 on the motor driver for the right motor
const int AIN2 = 12; // control pin 2 on the motor driver for the right motor
const int PWMA = 11; // speed control pin on the motor driver for the right motor
 
int switchPin = 7; // switch to turn the robot on and off
 
// VARIABLES
int motorSpeed = 0; // starting speed for the motor
 
void spinMotor(int);
 
void setup()
{
 pinMode(switchPin, INPUT_PULLUP); // set this as a pullup to sense whether the switch is flipped
 
 // set the motor control pins as outputs
 pinMode(AIN1, OUTPUT);
 pinMode(AIN2, OUTPUT);
 pinMode(PWMA, OUTPUT);
 
 Serial.begin(9600); // begin serial communication with the computer
 
 Serial.println("Enter motor speed (0-255)... "); // Prompt to get input in the serial monitor.
}
 
void loop()
{
 
 if (Serial.available() > 0)
 {                                 // if the user has entered something in the serial monitor
   motorSpeed = Serial.parseInt(); // set the motor speed equal to the number in the serial message
 
   Serial.print("Motor Speed: "); // print the speed that the motor is set to run at
   Serial.println(motorSpeed);
 }
 
 if (digitalRead(7) == LOW)
 { // if the switch is on...
   spinMotor(motorSpeed);
 }
 else
 { // if the switch is off...
   spinMotor(0);                   //turn the motor off
   // spinMotor(-motorSpeed); // challenge: make the motor change directions
 }
}
 
/********************************************************************************/
void spinMotor(int motorSpeed) // function for driving the right motor
{
 if (motorSpeed > 0) // if the motor should drive forward (positive speed)
 {
   digitalWrite(AIN1, HIGH); // set pin 1 to high
   digitalWrite(AIN2, LOW);  // set pin 2 to low
 }
 else if (motorSpeed < 0) // if the motor should drive backward (negative speed)
 {
   digitalWrite(AIN1, LOW);  // set pin 1 to low
   digitalWrite(AIN2, HIGH); // set pin 2 to high
 }
 else // if the motor should stop
 {
   digitalWrite(AIN1, LOW); // set pin 1 to low
   digitalWrite(AIN2, LOW); // set pin 2 to low
 }
 analogWrite(PWMA, abs(motorSpeed)); // now that the motor direction is set, drive it at the entered speed
}

L293D Motor Driver

• See L293D Motor Driver

Circuit 5A: Motor Basics- Tinkercad Simulation

Note: Run simulation → code → serial monitor → enter a value to set motor speed

Circuit 5B: Remote-Controlled Robot

Circuit 5B: Remote-Controlled Robot

In this circuit you will learn the basic concepts behind motor control. Motors require a lot of current, so you can’t drive them directly from a digital pin on the RedBoard. Instead, you’ll use what is known as a motor controller or motor driver board to power and spin the motor accordingly

• Motor Controller: See TB6612FNG Motor Driver
• Can use a button instead of a switch

View Code

Circuit 5C

https://learn.sparkfun.com/tutorials/sparkfun-inventors-kit-experiment-guide---v41/circuit-5c-autonomous-robot