system
April 15, 2011, 10:11am
1
How to control the number of rotations of servo motor?
i want to fix on the number of rotations.
I am using putting a part of my code here:
unsigned int keystate = 0;
if (bs1 == HIGH) bitSet(keystate , 0); // 1 - 1 (BIN)
if (bs1a == HIGH) bitSet(keystate , 1); // 2 - 10
if (bs2 == HIGH) bitSet(keystate , 2); // 4 - 100
if (bs2a == HIGH) bitSet(keystate , 3);// 8- 1000
delay(1000);
Serial.print("STATE: ");
Serial.println(keystate, BIN); // 0-15 = 0 - 1111
temp= val;
val = val1;
val1 = temp;
switch (keystate )
{
case 1: // bs1 pressed others not
myservo1.write(val1); // tell servo to go to position in variable 'pos'
delay(1500); // waits 15ms for the servo to reach the position
Serial.println("Ax");
myservo1.detach();
delay(1500);
break;
system
April 15, 2011, 10:39am
2
How to control the number of rotations of servo motor?
Is this another modded continuous rotation "servo" question?
delay(1500); // waits 15ms for the servo to reach the position
1500milliseconds is a second and a half.
system
April 15, 2011, 12:04pm
3
i want to rotate the motor twice with one HIGH signal..here the servo rotates 180 degrees and back to 0 degrees.
system
April 15, 2011, 12:06pm
4
A servo normally only rotates to 180 degrees or less.
Are you saying you want it to do two cycles of 0 -> 180 -> 0 ?
here the servo rotates 180 degrees and back to 0 degrees.
I see no evidence for that in the code you posted.
system
April 18, 2011, 9:51am
5
ya i posted a part of the code.
system
April 18, 2011, 9:57am
6
You need to post your code.
You realise an ex-servo can't be commanded to a set position?
system
April 18, 2011, 11:06am
7
ok here is my code
#include <Servo.h>
Servo myservo1;
Servo myservo2;
//Servo myservo3;
const int buttonPin1 = 2; // Axthe pin that the pushbutton is attached to
const int buttonPin1a = 3; //Bx
const int buttonPin2 = 4; //Ay
const int buttonPin2a = 5; //By
//const int buttonPin3 = 6; //Az
//const int buttonPin3a =7 ; //Bz
const int serPin1 = 9; // the pin that the servo is attached to
const int serPin2 = 10;
//const int serPin3 = 11;
//int lbs1 = 0; // previous state of the button
//int lbse2 = 0;
//int lbs1a = 0;
//int lbs2a = 0;
int bs1 = 0; // current state of the button
int bs2 = 0; // current state of the button
int bs2a = 0;
int bs1a = 0;
//int bs3 = 0;
//int bs3a = 0;
int val= 180;
int val1= 0;
int temp;
int pos=0;
void setup() {
myservo1.attach(9);
myservo2.attach(10);
// myservo3.attach(11);
// initialize the button pin as a input:
pinMode(buttonPin1, INPUT);
pinMode(buttonPin1a, INPUT);
pinMode(buttonPin2, INPUT);
pinMode(buttonPin2a, INPUT);
// pinMode(buttonPin3, INPUT);
// pinMode(buttonPin3a, INPUT);
// // initialize the LED as an output:
pinMode(serPin1, OUTPUT);
pinMode(serPin2, OUTPUT);
// pinMode(serPin3, OUTPUT);
// initialize serial communication:
Serial.begin(9600);
}
void loop()
{
myservo1.attach(9);
myservo2.attach(10);
// myservo3.attach(11);
digitalWrite(buttonPin1, HIGH); // pull-up
digitalWrite(buttonPin1a, HIGH);
digitalWrite(buttonPin2, HIGH);
digitalWrite(buttonPin2a, HIGH);
bs1= digitalRead(buttonPin1); // LOW = 0 HIGH = 1
bs1a = digitalRead(buttonPin1a);
bs2 = digitalRead(buttonPin2);
bs2a = digitalRead(buttonPin2a);
// bs3 = digitalRead(buttonPin3);
// bs3a = digitalRead(buttonPin3a);
unsigned int keystate = 0;
if (bs1 == HIGH) bitSet(keystate , 0); // 1 - 1 (BIN)
if (bs1a == HIGH) bitSet(keystate , 1); // 2 - 10
if (bs2 == HIGH) bitSet(keystate , 2); // 4 - 100
if (bs2a == HIGH) bitSet(keystate , 3);// 8- 1000
// if (bs3 == HIGH) bitSet(keystate , 4); // 16- 10000
// if (bs3a == HIGH) bitSet(keystate , 5);// 32 - 100000
//
delay(1000);
Serial.print("STATE: ");
Serial.println(keystate, BIN); // 0-15 = 0 - 1111
temp= val;
val = val1;
val1 = temp;
switch (keystate )
{
case 1: // bs1 pressed others not
myservo1.write(val1); // tell servo to go to position in variable 'pos'
delay(1500); // waits for the servo to reach the position
Serial.println("Ax");
myservo1.detach();
delay(1500);
break;
case 2: // bs1a pressed others not
myservo1.write(val1);
delay(1500);
Serial.println("B-x");
myservo1.detach();
break;
case 4 : // bs2 pressed others not
myservo2.write(val1);
delay(1000);
Serial.println("Ay");
myservo2.detach();
break;
case 8: // bs2a pressed others not
myservo2.write(val1);
delay(1000);
Serial.println("B-y");
myservo2.detach();
break;
case 5: // bs1 and bs2 pressed others not
myservo1.write(val1);
delay(1000);
Serial.println("AA");
myservo2.write(val1);
delay(1000);
myservo1.detach();
break;
case 10: // bs1 and bs2 pressed others not
myservo1.detach();
myservo2.detach();
delay(1000);
Serial.println("BB");
break;
case 9: // bs1-Ax and bs2a-By pressed others not
Serial.println("AxBy");
myservo2.write(val1);
delay(1500);
// myservo1.write(val1);
// delay(1500);
Serial.println("AxAy");
myservo1.detach();
myservo2.detach();
break;
case 6: // bs1a-Bx and bs2-Ay pressed others not
Serial.println("BxAy");
myservo1.write(val1);
delay(1500);
// myservo2.write(val1);
// delay(1500);
Serial.println("AxAy");
myservo1.detach();
myservo2.detach();
break;
case 0: // no keys pressed;
break;
default: // invalid key combination
// error message
Serial.println("Invalid key combination pressed");
break;
myservo1.detach();
myservo2.detach();
}
}
here i want the servo to stop after 1 rotation until another case is called.
system
April 18, 2011, 11:21am
8
i want the servo to stop after 1 rotation until another case is called
I don't understand the last part of this sentence.
m1804:
Did you read the post immediately before yours? Let me quote it for you.
You realise an ex-servo can't be commanded to a set position?
So, a servo that has been modified to continuous rotation cannot be controlled in a way that will make it stop at a specific location.
When you state that you want the servo to stop after 1 rotation, you are describing a specific location.
I am going to shout now. YOU CANNOT DO THAT WITH THE HARDWARE YOU HAVE!
You will need to add an encoder to replace the position sensitive pot that was disabled/removed when the servo was modified for continuous rotation.