Wrong laser shot

[jkwilborn (Jack Wilborn)]

I think we’ve seen this before… This link was the discussion. @ednisley traced it down to a bad lps. The signals say don’t lase, but it lases anyway…

Where Those Random Dots in Engravings Come From

Until I hacked the lid switch to its Water Protect input, the power supply had only two digital inputs from the Ruida controller: IN = PWM L = L-ON (low-active) (Plus ground, as discussed below.) This scope shot shows how the PWM signal behaves during the test pattern above at 40% PWM: [Tube Current - 40pct - enable vs PWM - 50 ma-div] The traces: X axis direction = yellow L-ON = Enable = magenta IN = PWM = cyan tube current 50 mA/div = green The upper half of the screen shows two com…

Good luck