You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
74 lines
1.7 KiB
74 lines
1.7 KiB
//www.elegoo.com
|
|
//2016.12.12
|
|
|
|
/************************
|
|
Exercise the motor using
|
|
the L293D chip
|
|
************************/
|
|
|
|
#define ENABLE 5
|
|
#define DIRA 3
|
|
#define DIRB 4
|
|
|
|
int i;
|
|
|
|
void setup() {
|
|
//---set pin direction
|
|
pinMode(ENABLE,OUTPUT);
|
|
pinMode(DIRA,OUTPUT);
|
|
pinMode(DIRB,OUTPUT);
|
|
Serial.begin(9600);
|
|
}
|
|
|
|
void loop() {
|
|
//---back and forth example
|
|
Serial.println("One way, then reverse");
|
|
digitalWrite(ENABLE,HIGH); // enable on
|
|
for (i=0;i<5;i++) {
|
|
digitalWrite(DIRA,HIGH); //one way
|
|
digitalWrite(DIRB,LOW);
|
|
delay(500);
|
|
digitalWrite(DIRA,LOW); //reverse
|
|
digitalWrite(DIRB,HIGH);
|
|
delay(500);
|
|
}
|
|
digitalWrite(ENABLE,LOW); // disable
|
|
delay(2000);
|
|
|
|
Serial.println("fast Slow example");
|
|
//---fast/slow stop example
|
|
digitalWrite(ENABLE,HIGH); //enable on
|
|
digitalWrite(DIRA,HIGH); //one way
|
|
digitalWrite(DIRB,LOW);
|
|
delay(3000);
|
|
digitalWrite(ENABLE,LOW); //slow stop
|
|
delay(1000);
|
|
digitalWrite(ENABLE,HIGH); //enable on
|
|
digitalWrite(DIRA,LOW); //one way
|
|
digitalWrite(DIRB,HIGH);
|
|
delay(3000);
|
|
digitalWrite(DIRA,LOW); //fast stop
|
|
delay(2000);
|
|
|
|
Serial.println("PWM full then slow");
|
|
//---PWM example, full speed then slow
|
|
analogWrite(ENABLE,255); //enable on
|
|
digitalWrite(DIRA,HIGH); //one way
|
|
digitalWrite(DIRB,LOW);
|
|
delay(2000);
|
|
analogWrite(ENABLE,180); //half speed
|
|
delay(2000);
|
|
analogWrite(ENABLE,128); //half speed
|
|
delay(2000);
|
|
analogWrite(ENABLE,50); //half speed
|
|
delay(2000);
|
|
analogWrite(ENABLE,128); //half speed
|
|
delay(2000);
|
|
analogWrite(ENABLE,180); //half speed
|
|
delay(2000);
|
|
analogWrite(ENABLE,255); //half speed
|
|
delay(2000);
|
|
digitalWrite(ENABLE,LOW); //all done
|
|
delay(10000);
|
|
}
|
|
|
|
|