Oomlout ARDX Скачать руководство пользователя страница 17

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Still not Working

A mistake we made a time or

two was simply forgetting to

connect the power (red and

brown wires) to +5 volts and

ground.

CIRC-04

Code

(no need to type everything in just)

File > Examples > Servo > Sweep

(example from the great arduino.cc site check it out for other great ideas)

Not Working?

(3 things to try)

More, More, More:

More details, where to buy more parts, where to ask more questions.

http://tinyurl.com/djwlop

Making it Better

Servo Not Twisting?

Even with colored wires it is still

shockingly easy to plug a servo

in backwards. This might be the

case.

Potentiometer Control:

void loop() {

We have yet to experiment with inputs but if you would like to

int pulseTime = 2100; //(the number of microseconds
//to pause for (1500 90 degrees

read ahead, there is an example program

File > Examples >

// 900 0 degrees 2100 180 degrees)
digitalWrite(servoPin, HIGH);

Servo > Knob.

This uses a potentiometer (CIRC08) to control

delayMicroseconds(pulseTime);
digitalWrite(servoPin, LOW);

the servo. You can find instructions online here:

delay(25);

http://tinyurl.com/dymsk2

}

Great Ideas:

Self Timing:

Servos can be used to do all sorts of great things, here are a few of

While it is easy to control a servo using the Arduino's included

our favorites.

library sometimes it is fun to figure out how to program

something yourself. Try it. We're controlling the pulse directly

Xmas Hit Counter

so you could use this method to control servos on any of the

http://tinyurl.com/37djhq

Arduino's 20 available pins (you need to highly optimize this

code before doing that).

Open Source Robotic Arm (uses a servo controller as well as the Arduino)

http://tinyurl.com/ckm3wd

int servoPin = 9;

void setup(){

Servo Walker

pinMode(servoPin,OUTPUT);

http://tinyurl.com/da5jfe

}

// Sweep
// by BARRAGAN <http://barraganstudio.com>

#include <Servo.h>
Servo myservo; // create servo object to control a servo
int pos = 0; // variable to store the servo position

void setup() {
myservo.attach(9); // attaches the servo on pin 9 to the servo object
}

void loop() {
for(pos = 0; pos < 180; pos += 1) // goes from 0 degrees to 180 degrees
{ // in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
for(pos = 180; pos>=1; pos-=1) // goes from 180 degrees to 0 degrees
{
myservo.write(pos); // tell servo to go to position in variable 'pos'
delay(15); // waits 15ms for the servo to reach the position
}
}

CIRC-04

What We’re Doing:

.:A Single Servo:.

.:Servos:.

Spinning a motor is good fun but when it comes to projects

where motion control is required they tend to leave us wanting

more. The answer? Hobby servos. They are mass produced,

widely available and cost anything from a couple of dollars to

hundreds. Inside is a small gearbox (to make the movement more powerful) and some

electronics (to make it easier to control). A standard servo is positionable from 0 to 180

degrees. Positioning is controlled through a timed pulse, between 1.25 milliseconds (0 degrees)

and 1.75 milliseconds (180 degrees) (1.5 milliseconds for 90 degrees). Timing varies between