On 10 Apr 2012, at 12:20, inflo <[email protected]> wrote:

> To the 7i76 card i can connect the power supply, or ? 

No, the PSU connects to the stepper motor drives. (the 7i76 is optional, you 
could connect the drives direct to the 5i25, but the 7i76 adds protection, 
spindle control and extra GPIO. 
> 
> Can i use just one power-supply for all 3 motors ?

Yes. But you still need stepper drives:
This sort of thing. 
http://www.zappautomation.co.uk/dm422c-digital-driver-p-455.html

> Can i run stepper or servos with the mesa 7i76 ? 

You would use a 7i77 for servo drives. 

> You think servos are better than stepper motors ?

Yes, but a lot more expensive, and excessive for your Proxxon

> what do you mean with "ie both Pico and Mesa products move step signal 
> generation and counters into hardware"  ? do i need motors with some inner 
> signal generation ?

No, the cards themselves generate the step pulses, at a frequency set by 
LinuxCNC, rather than the LinuxCNC commanding each step one at a time. 
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