View Single Post
  #110  
Old 14-10-2012, 08:25 PM
dtrewren's Avatar
dtrewren (Dave)
Above the equator ...

dtrewren is offline
 
Join Date: May 2012
Location: Bristol UK
Posts: 134
Hello Neale et al,

Great news, thanks for the feedback !

On the motor front any 4 phase unipolar motor should work fine with the SharpSky controller including the MoonLite Hurst motor. Even though motors have similar specifications due to variations in mechanical construction their response to being driven can be somewhat different. In order to support a wide range of motors I included a motor drive period parameter on the SharpSky properties window. This defaults to 35ms which gives good torque and speed for the motor I have been using. For Neale's motor this had to be increased to 60ms for smooth operation.

I usually increase the value to about 80ms and then reduced until the motor just starts missing steps or chattering and then add 10%.

Again, good job.

Cheers & clear skies,

Dave
Reply With Quote