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Topic: Hybird bi-polar stepper motor (Read 1 time) previous topic - next topic

DerekMellott

Hello,

I'm hoping that someone here would be generous with their time and help me with my problem.

I am trying to operate a hybird bipolar stepper motor through a "motor sensor" connected to a Camera Axe.

This setup controls a normal bipolar stepper motor just fine but when I hook up a hybird one the motor buzzes and when I activate it the motor movements are erratic and jerks around in both directions. I have tried every possible arrangement of cable connection.

Is this board able to operate this type of motor? Do I have to modify the board?

Here are the schematics of the Camera Axe shield and motor sensor.
http://www.cameraaxe.com/files/eagle/circuit_motorSensor_v11.png

http://www.cameraaxe.com/files/ca5/ca5_shield_schematic.png

Here is the manual for the motor.
http://www.phidgets.com/documentation/Phidgets/3318_0_Product_Manual.pdf

Thank you to anyone who can help me with this, I am very new to the arduino platform and stepper motors.

If I'm missing any info that can help you help me please ask and I will do whatever I can to provide the answers.





kf2qd

It's the correct type of motor. 2 possible problems -

You don't have the motor connected correctly to the driver. Check you wiring for loose connections.

You don't have the correct voltage/current or you need to have a longer acceleration time.

You are trying to move the motor too fast (can be a voltage or current problem)

DerekMellott

Thank you for your reply!

I will test out the speed when I get home.

Would that also account for the loud buzzing when powered on? The buzzing goes away when the motor is activated.

I am using a 12v lithium battery to power the driver.

DerekMellott

Changing the speed does not help. I've also hooked up 2 other hybird motors and they all behave the same. I have no idea what to try next.

DerekMellott

Does anyone have any ideas for what else I can try or what the problem might be?

justone

You say that you can get a regular bipolar (4 wires) working but not a hybrid bipolar ( 4 wires ) .

Hook up the regular one and get it working. Make a note of the wiring. Remove the wiring and measure the resistance with an ohmmeter between the wires. With a 4 wire stepper there are  2 sets of "coils" which will show some resistance between 2 wires which indicates a "coil".

Don't have an ohmmeter? Well you might be able to identify the "coil" by spinning the stepper by hand and touching 2 wires together. If you feel resistance then those 2 wires form a "coil".

Now identify the "coils" on your hybrid. Hook them up the same way as the regular one to the board.

DerekMellott

Thank you for the tip, I will try that.

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