DIY Laser levelling using webcam and laser level

[devmonkey]

One final test, I repeated the straightness test on my milling machine table, again 10 stations over 500mm, 3 runs again eyeballed off a ruler bolted to the table. The table is pretty straight within +/- 0.01mm over 500mm.



It is certainly much straighter than my kitchen island !

I did this test very quickly and it wasn't performed perfectly, for example the laser was really too close sensor meaning that the sensor was saturated or nearly saturated around the beam, this would lead to a little inaccuracy as the maxima is effectively on a flat peak, it would be better if the laser was further away reducing its brightness.