Difference between revisions of "Lesson 41--Microduino Dc Motor Rotation Control"
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Revision as of 08:28, 8 July 2016
| Language: | English • 中文 |
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ObjectiveThis tutorial will teach you use a simple way to achieve the forward and backward rotation of a dc motor. Equipment
SchematicNote：This isn't one of the most safe method to control the motor, because each I/O pin only can carry 40mA current. If as a practical application, recommend using H-Bridge motor driver board. Programint motorPin1 = 5; // Motor's one end connects to digital pin 5
int motorPin2 = 6; // The other end connects to digital pin 6
void setup() {
//Initialization, set these two pins as output
pinMode(motorPin1, OUTPUT);
pinMode(motorPin2, OUTPUT);
}
void loop()
{
rotateLeft(150, 500);//Left rotate, speed=150, lasts 500ms
rotateRight(50, 1000);//Right rotate, speed=50, lasts 1000ms
rotateRight(150, 1000);//Right rotate, speed=150, lasts 1000ms
rotateRight(200, 1000);//Right rotate, speed=200, lasts 1000ms
rotateLeft(255, 500);//Left rotate, speed=255, lasts 500ms
rotateRight(10, 1500);//Right rotate, speed=10, lasts 1500ms
}
//Turn left
void rotateLeft(int speedOfRotate, int length){
analogWrite(motorPin1, speedOfRotate); //Use pwm to set the current
digitalWrite(motorPin2, LOW); // Set motorPin2 to LOW
delay(length); //waits
digitalWrite(motorPin1, LOW); // Set motorPin1 to LOW
}
//Trun right
void rotateRight(int speedOfRotate, int length){
analogWrite(motorPin2, speedOfRotate); //Use pwm to set the current
digitalWrite(motorPin1, LOW); // Set motorPin1 to LOW
delay(length); //waits
digitalWrite(motorPin2, LOW); // Set motorPin2 to LOW
}
//Full speed turn left
void rotateLeftFull(int length){
digitalWrite(motorPin1, HIGH); //Set max current
digitalWrite(motorPin2, LOW); // Set motorPin2 to LOW
delay(length); //waits
digitalWrite(motorPin1, LOW); // Set motorPin1 to LOW
}
//Full speed turn right
void rotateRightFull(int length){
digitalWrite(motorPin2, HIGH); //Set max current
digitalWrite(motorPin1, LOW); // Set motorPin1 to LOW
delay(length); //waits
digitalWrite(motorPin2, LOW); // Set motorPin2 to LOW
}DebugStep 1：Copy the code to IDE and compile it Step 2：Set up circuit, as follows： Step 3：Run program Step 4：Check the rotation of motor ResultMotor will rotate forward and backward with different speed and in circle. Video |
