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1  Using Arduino / Motors, Mechanics, and Power / Re: Stepper overheating on: November 16, 2012, 12:20:50 am
Thank you Chagrin,

I've ordered one of the Pololus.
Looks as though I'll have much more control  over the motor.

Thanks again,

Chris
2  Using Arduino / Motors, Mechanics, and Power / Stepper overheating on: November 15, 2012, 10:11:14 pm
I'm successfully running an Astrosyn Miniangle Stepper 23Lm-C004-55.
Arduino Uno board, Adafruit stepper shield.
I have a 12v DC 7.5Ah gel battery as my power source to the shield.
The 5v USB supply from the Uno does not provide enough torque.
I'm planning to use this setup to drive a telescope equatorial platform.

The stepper motor gets very hot after a while.
The motor is a 6.0 v/phase 1.2 a/phase unit

Questions...
Should I reduce the voltage to 6v ?
How would I go about doing this ?
Can I achieve this on board the shield ?
Or do I have to buy a regulator ?

Thanks

Chris
3  Using Arduino / Installation & Troubleshooting / Re: Drivers for Windows 8 ? on: November 14, 2012, 12:35:54 am
Fixed!

Sorry, I should have looked further down the page, found the solution with the revised Arduino.inf file etc.
All working now.

Thank you!

Chris
4  Using Arduino / Installation & Troubleshooting / Drivers for Windows 8 ? on: November 14, 2012, 12:21:16 am
I've just upgraded my laptop to Windows 8 Pro. (mistake ?)
Arduino has stopped working!

My attempts to update drivers have failed.

Please refer to pictures for the current status.

Your advice would be appreciated!

Thanks

Chris
5  Using Arduino / Motors, Mechanics, and Power / Re: 9 wire stepper question on: November 11, 2012, 03:16:49 pm
Thank you!

There are moments when I ask myself why I am going down this path.
Than goodness I'm retired and have the time.
I feel as though I'm starting a marathon while I'm still learning to crawl!

Cheers

Chris



6  Using Arduino / Motors, Mechanics, and Power / Re: 9 wire stepper question on: November 11, 2012, 05:08:03 am
Thanks for the suggestion; I've created the chart but I'm not sure what it's telling me?

Can you see a meaningful pattern?

Thanks

Chris
7  Using Arduino / Motors, Mechanics, and Power / 9 wire stepper question on: November 10, 2012, 11:55:30 pm
Hi, new to the forum, and definitely a newcomer to this subject!

I'm hoping I can get some advice on running a 9 wire stepper motor, pictures attached,
Code 57SH-52A9D 22.5Ώ 0.9deg, JAPAN 16 May 86 DB

I have successfully got two 4 wire steppers running, using a Uno plus a stepper shield,
but I have no idea of where to go with this motor which I'm hoping will have a lot more torque.
 
I think I have identified the pairs on this motor using the 'easy to turn' test.
All other combinations lock the motor.

Nine wires...
White           1
Mauve   2
Orange   5
Blue           6
Green   4
Brown   3
Yellow   8
Red      7
Black   ?????

I'm scratching my head over  what the 12th wire is for?
Will I be able to hook this up to my '2 servo - 2 stepper - 4 DC motor' Arduino shield?

Your help would be appreciated!

Thanks

Chris
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