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In this guide we will set the camera offset, based on actual measurements taken from the machine.
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Locate the following parts:
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A working pick-and-place machine, with nozzle and down-looking camera
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Silly putty
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Place the silly putty on the bed, close to X=0, Y=0, or wherever the machine home is.
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If you don't have silly putty, you can just use the little hole on the center of the bedplate as a point of reference.
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Jog the machine's SMT nozzle tip down into the silly putty.
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NOTE: If you don't have silly putty, you can jog the SMT tip down to the little hole in the center of the bed plate, and use it as a refererence. Simply use the jog commands until the tip is precisely centered in the dot, and is level with the top of it.
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Either way, write down the X,Y,Z numbers from the DRO in a safe place. We'll need to refer to them later.
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Click "Position the camera at the tool's current location'.
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At this point, if you followed the machine.xml guide, you should be "close" to the dot, at least enough to see it on the camera. You shouldn't be more than a few millimeters off, if that.
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Put the DRO in relative mode by clicking the X and Y readout until they turn blue and the numbers change to zero.
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Jog the end effector around until the dot is precisely under the graticule.
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Write the X and Y values down.
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Take these X and Y values. Invert them, and add them to the current X and Y camera offsets in machine.xml.
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