Subject:
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Re: Stepper Motor.
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Sun, 25 Oct 1998 14:52:04 GMT
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Original-From:
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FTHOMPSON9@AOL.COMnomorespam
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Viewed:
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1490 times
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Keith,
At first blush I would suggest the following connections:
Motor Out 0 1 - stepper phase #1
Motor Out 1 2- '' '' #2
Motor Out 2 3- '' '' #3
Motor Out 3 4 - '' '' #4
Ground 5 - stepper common #1,3
Ground 6 - stepper common #2,4
Your program would look like:
long someTime;
someTime = knob(); /* set time delay with frob knob */
while (1) { /* Forever */
while (start_press()) { /* Motor spins one way */
fd(0);
msleep(someTime);
off(0);
fd(1);
msleep(someTime);
off(1);
fd(2);
msleep(someTime);
off(2);
fd(3);
msleep(someTime);
off(3);
}
while (stop_press()) { /* Motor spins the other way */
fd(3);
msleep(someTime);
off(3);
fd(2);
msleep(someTime);
off(2);
fd(1);
msleep(someTime);
off(1);
fd(0);
msleep(someTime);
off(0);
}
}
You might want to use an ohm meter to measure the resistance of the coils
before you start. If the resistance is less and 5 ohms, I really wouldn't
expect too much from the motor outputs, but it might still do something no
load. This is a crude approach, and you might want to spend some time
fiddling with the way you arrive at "someTime." But I think this will get you
started.
Hope this helps
Pherd
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