Thanks! Now i read a bit more into this but still have some things unclear:

-how many amps you drive the each Nichia NDB7875? it seems it should be much less than 2.4A i thought, for continuous use i mean. If much less, couldnt i use in series 2 diodes with say 4A driver, or i still need the more expensive 2 channel driver?
-do you have Lasorb fitted on your set up?

-The DAC still puzzles me. now having to fabricate the DAC converter as per the PDf, i start to think- is there any schematic to make all by my self, including the driver?


-why you say at many places that the encoder gives better resolution than the circuit. I can not understand that. I was also thinking as my machine will be servo driven, could i somehow use the servo encoder /2500ppr / or even somehow use the analogue 0-5v output of my 8 axis Galil board