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Heden Carat wireless focus with Preston DM1 motor


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#1 Robert Tench

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Posted 13 July 2017 - 08:54 AM

Hi all,

 

I am wondering if anyone has used a preston DM1 motor with their Heden carat wireless focus system?

 

The default setting in the Heden, should allow you to run the Preston DM1, however when I have tried it, the auto calibration has the motor running very weak and struggling to calibrate a lens that this motor should have no issues on.

 

If it does manage to calibrate, with a turn of the focus knob, the motor can be heard to rev up and come to a stop, and the red lights flash on the handunit to indicate a motor error.

 

I have tried the motor on a preston mdr, and it works perfectly, so the issue lies in the Heden itself.

 

Have contacted Heden, but whoever coded these motor setups into the Heden GUI was a sub supplier, and it would appear no one at Heden actually tested these motors to see if they even work.

 

If anyone has used the Preston motors on the Heden, would be great to know if you had any difficulties and what settings you used.


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#2 AJ Young

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Posted 18 July 2017 - 11:24 PM

Sounds like you've mostly answered your own question.

 

The Heden system does connect with the Preston motors, but the results are less than stellar.

 

Your best bet is to treat wireless FF and video like household batteries: never mix brands. If it's a Preston motor, then pair it with an MDR and Preston handheld unit. Otherwise you're in for a huge headache.


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#3 Robert Tench

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Posted 19 July 2017 - 12:50 AM

I have to say it is a little surprising because they all use Faulhaber motors.

Reps at Heden said that the various motor timings supplied in their GUI was by a sub supplier. Trying to get Heden now to look into it as they make the claims to be able to use other motors, but never actually took it upon themselves to test the functionality of a product they release.

Trying to find out exactly which Faulhaber motor and encoder was used in the Preston DM-1
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