DFRduino L298p Shield Reverse Problems
jakfourie 2013-05-19 04:08:19 5892 Views4 Replies Hi,
I'm having trouble getting the motors to reverse. I tried different motors and reversing the polarity works.
Any help would be highly appreciated.
I'm having trouble getting the motors to reverse. I tried different motors and reversing the polarity works.
Any help would be highly appreciated.
2013-05-23 08:01:38 Thanks Jose,
It didn't work initially but after I decided to stack the boards, instead of using jumper wires, it worked.
I'm guessing it must have been a floating ground. jakfourie
It didn't work initially but after I decided to stack the boards, instead of using jumper wires, it worked.
I'm guessing it must have been a floating ground.
jakfourie 2013-05-23 00:12:34 Hey Jakfourie,
I think the backward function is not right, try this:
//Backward
digitalWrite(M1,LOW);
digitalWrite(M2, LOW);
analogWrite(E1, 100); //PWM Speed Control
analogWrite(E2, 100); //PWM Speed Control
delay(2000); //2 seconds
You can also increase turn speed, by applying the same formula:
Basically the HIGH and LOW sets the direction of the motor, and the number (E2, 100) will set the speed.
You can go up to 255, so you can play with different speeds for getting different results. I tend to preffer lower speeds since make other things easier, but for some tasks speedy turns are nice.
You set one motor forward and the other one backward, this will let you turn in place without moving from the spot
Best,
Jose Jose
I think the backward function is not right, try this:
//Backward
digitalWrite(M1,LOW);
digitalWrite(M2, LOW);
analogWrite(E1, 100); //PWM Speed Control
analogWrite(E2, 100); //PWM Speed Control
delay(2000); //2 seconds
You can also increase turn speed, by applying the same formula:
Basically the HIGH and LOW sets the direction of the motor, and the number (E2, 100) will set the speed.
You can go up to 255, so you can play with different speeds for getting different results. I tend to preffer lower speeds since make other things easier, but for some tasks speedy turns are nice.
You set one motor forward and the other one backward, this will let you turn in place without moving from the spot
Best,
Jose
Jose 2013-05-21 07:00:12 Hi Jose,
The code below is what I'm using with this shield on its own.
[url=https://www.dfrobot.com/wiki/index.php?title=Arduino_Motor_Shield_%28L298N%29_%28SKU:DRI0009%29]https://www.dfrobot.com/wiki/index.php?title=Arduino_Motor_Shield_%28L298N%29_%28SKU:DRI0009%29[/url]
[code]//Arduino PWM Speed Control?
int E1 = 6;
int M1 = 7;
int E2 = 5;
int M2 = 4;
void setup()
{
pinMode(M1, OUTPUT);
pinMode(M2, OUTPUT);
pinMode(E1, OUTPUT);
pinMode(E2, OUTPUT);
}
void loop()
{
//Forward
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH);
analogWrite(E1, 100); //PWM Speed Control
analogWrite(E2, 100); //PWM Speed Control
delay(2000); //2 seconds
//Backward
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH;
digitalWrite(E1, HIGH); //PWM Speed Control
digitalWrite(E2, HIGH); //PWM Speed Control
delay(2000); //2 seconds
//Left Turn
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH);
analogWrite(E1, 100); //PWM Speed Control
analogWrite(E2, 0); //PWM Speed Control
delay(2000); //2 seconds
//Right Turn
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH);
analogWrite(E1, 0); //PWM Speed Control
analogWrite(E2, 100); //PWM Speed Control
delay(2000); //2 seconds
//Wait
digitalWrite(M1,LOW);
digitalWrite(M2, LOW);
analogWrite(E1, 0); //PWM Speed Control
analogWrite(E2, 0); //PWM Speed Control
delay(2000); //2 seconds
}
[/code]
Everything works fine except the backwards portion.
Thank you in advance jakfourie
The code below is what I'm using with this shield on its own.
[url=https://www.dfrobot.com/wiki/index.php?title=Arduino_Motor_Shield_%28L298N%29_%28SKU:DRI0009%29]https://www.dfrobot.com/wiki/index.php?title=Arduino_Motor_Shield_%28L298N%29_%28SKU:DRI0009%29[/url]
[code]//Arduino PWM Speed Control?
int E1 = 6;
int M1 = 7;
int E2 = 5;
int M2 = 4;
void setup()
{
pinMode(M1, OUTPUT);
pinMode(M2, OUTPUT);
pinMode(E1, OUTPUT);
pinMode(E2, OUTPUT);
}
void loop()
{
//Forward
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH);
analogWrite(E1, 100); //PWM Speed Control
analogWrite(E2, 100); //PWM Speed Control
delay(2000); //2 seconds
//Backward
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH;
digitalWrite(E1, HIGH); //PWM Speed Control
digitalWrite(E2, HIGH); //PWM Speed Control
delay(2000); //2 seconds
//Left Turn
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH);
analogWrite(E1, 100); //PWM Speed Control
analogWrite(E2, 0); //PWM Speed Control
delay(2000); //2 seconds
//Right Turn
digitalWrite(M1,HIGH);
digitalWrite(M2, HIGH);
analogWrite(E1, 0); //PWM Speed Control
analogWrite(E2, 100); //PWM Speed Control
delay(2000); //2 seconds
//Wait
digitalWrite(M1,LOW);
digitalWrite(M2, LOW);
analogWrite(E1, 0); //PWM Speed Control
analogWrite(E2, 0); //PWM Speed Control
delay(2000); //2 seconds
}
[/code]
Everything works fine except the backwards portion.
Thank you in advance
jakfourie 2013-05-20 20:50:30 Hi,
Can you send your code and a picture of your hardware setup?
What motor driver are you using? and what other modules are you using if any?
Best,
Jose Jose
Can you send your code and a picture of your hardware setup?
What motor driver are you using? and what other modules are you using if any?
Best,
Jose
Jose 