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- Mar 31, 2013
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I have an XY galvo and want to make a control card.
If I have values (0,0) (0,10) (10,10), (0,0) eg a square, how do I convert these XY values to voltages?
My understanding is that the angle the mirror rotate is supposed to be linear between -5v and +5v eg if I get it 0 volts then the mirror should rotate to 0 degrees, if I give it +5v it should go to say +20degrees so +2.5v=10degrees.
Playing with my galvo I see if I adjust the X galvo from -5v to +5v it will scan a straight line but if I scan the Y galvo the line is not vertical if the X galvo is not at 0v.
Anyone have the equations for the function (volts_A,volts_B)=function(x,y) ?
If I have values (0,0) (0,10) (10,10), (0,0) eg a square, how do I convert these XY values to voltages?
My understanding is that the angle the mirror rotate is supposed to be linear between -5v and +5v eg if I get it 0 volts then the mirror should rotate to 0 degrees, if I give it +5v it should go to say +20degrees so +2.5v=10degrees.
Playing with my galvo I see if I adjust the X galvo from -5v to +5v it will scan a straight line but if I scan the Y galvo the line is not vertical if the X galvo is not at 0v.
Anyone have the equations for the function (volts_A,volts_B)=function(x,y) ?