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Old 23-04-2018, 04:44 PM
AndrewJ
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AndrewJ is offline
 
Join Date: Mar 2006
Location: Melbourne
Posts: 1,905
Gday Damien
Looks really pretty :-)
Have attached 2 units i have made for my Meade microfocusser on my LX200.
Both units are designed to go into the fork arms and hence remove a lot of cabling.
The MkI uses only passive components ( OpAmps, comparators and a Mosfet driver )
The MkII uses a PIC ( 12F675 ) and a motor driver chip ( L293D )
No control via PC, but only requires one hand and one potentiometer when at the EP.
Andrew
Attached Thumbnails
Click for full-size image (Passive Focusser MkI.jpg)
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Click for full-size image (12F675 and 293D unit.jpg)
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