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Messages - Sujan Niraula

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General Mach Discussion / pin voltage
« on: June 29, 2011, 03:41:30 AM »
We are doing our final year project named CNC Mini Engraver using MACH 3, software. We are having problem to distinguish the step pin signals as it come between 0.07v and 0.11v. How do we distinguish such a low voltage signal to identify the step pin signals. We tried to use LM741 to amplify it, but the result was not satisfactory and we could not distinguish the step signal signal. The direction pin out put are 5v and 0 v for positive and negative axis.

 

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