LitePlacer.com forums

I'm trying to use the "Components by Pads" feature as described in Up Camera Assisted Placement and can't get a result. For example, here's the up camera view of an 0603:



With a simple thresholding and size filter the "Components by Outline" feature finds the pads no trouble:



My understanding from the documentation is that the "Components by Pads" feature similarly does not care about rectangularity, and uses the same "white blobs" criteria as "Components by Outline". But when I enable it, I get nothing:



I see the same symptoms were reported here, so I wonder if we're both missing something fundamental? Without this feature I fear I can get no benefit from the up camera other than nozzle calibration, since any part body is going to be hard to distinguish from the nozzle itself. So the pads are key.

Add "filter features by size" , so that the search sees only the pads. Please re-read https://liteplacer.com/up-camera-assisted-placement/ about this. Without this, the small blob under the part gets included, and that causes the result to be outside the acceptable size.

Ooooh, "Filter Features by Size" is a separate function. Got it - it works!


Screenshot shows both the "by Outline" results (red and green boxes around features) and the "by Pads" result (the larger green rectangle).

Thanks again. By the way, I have no idea why I was trying to see a component upside-down on the nozzle (markings facing down), but at least I learnt something in the process!

You want to decrease the acceptable size for both on the filter features and on the acceptable size. Finally, pick either by pads or by outline; if you select both, you get multiple results. That will fail when actually used, the final result should be unique.