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Gday Mate -
Moonlite hi res stepper controlled focuser and a Moonlite controller. The controller takes Maxim out of the loop - computer (focus max) talks to the controller and the controller steps the motor - there is no other software involved.
I dont know about dc focus control through Maxim however the operation should be similar. In my case - focus max tells the focuser to move 'x' steps thru the controller (thse steps are the x axis of the V curve - obviously I suppose). With a DC motor it should be pulse the dc motor for 't' duration to move the fosuer 'x' distance - I imagine thats what Maxim does - just that it must be linear for a given load - if it pulses for say 20 millseconds it must move it the same distance every 20 millsecond pulse (similar to a stepper controlled ystem). These pulse durations or focuser movement distance also will form the x axis of the V curve and it measures 1/2FD ( the y xis of the V curve) at each step (or pulse).
It then just does a linear regression (I assume linear but some form of regression) on each side of the V curve, works out the x axis intercepts and the idea is to get them as close to each other as possible - ie the 2 lines meet in the middle at the smallest possible 1/2FD. So the basic operation should be the same
What I dont know (have never used) is the communication between Maxim and the DC motor but the basic operation of FocusMax should be the same using pulses instead of steps.
If the problem is with FocusMax I can probably help but if the problem is with communication and control via Maxim it may ned someone familiar with it. I have it on this computer and will read thru it.
Damn i am curious now - when you open the V curve window (not the wizard) under the endpoints check button it says intital then final then the next box down says step increment - is that the same as yours? If it is diferent it must run a different set up for a DC motor.
It'd be good to get it going - it works brilliantly - I will have a read of Maxim docs and see I can fathom it.
Mark
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