Laser Head Height Sensor – Looking for a Beta Tester

smapp progress but still not too perfect. 
But it's simply stepper motor only

That is crazy! Still waiting for a 0-10v beckhoff module to arrive here. But just tonight I found a metal shim from a DRO mounting kit and some 3M decal self adhesive mounting glue strip panel beaters use. Press part on, glue peels off onto it then press it on where you wanted. So now my home switch triggers. The 8mm prox sensor would not see 12mm thick aluminium!

Awesome to see more folks doing Linuxcnc fiber lasers. I also just ordered a 6kw laser source from raycus together with the chiller and laser head. I am debating if i will use a raytools controller as those are quite inexpensive or linuxcnc.

What is the current state of the art in linuxcnc fiber lasers? any pointers?

forum.linuxcnc.org/plasma-laser/52597-bu...nuxcnc-and-qtplasmac
forum.linuxcnc.org/plasma-laser/51929-vi...led-500w-fiber-laser
forum.linuxcnc.org/show-your-stuff/50208...-laser-with-linuxcnc
forum.linuxcnc.org/plasmac/38701-plasmac...-control-auto-focuas

So, has there been any progress on getting this sensor to market? 

I'm trying to get a laser machine built, but, this is one of the toughest issues I'm facing.  I have a MESA 7i76EU that I have been trying to interface a BCL-AMP output to.  I have the BCL-AMP connected to a Raytools BT210S002A cutting head sitting on the bench with a chunk of steel in front of it and grounded to the case of the Raytools cutting head.  Between the BCL-AMP and the 7i76EU, I have a TI SN74HCS74DR dual Schmidt Trigger Flip Flop that I'm using to divide the BCL-AMP output frequency by 2 and "clean it up" at the same time.  However, it's just not very stable.  The velocity measured by the 7i76EU jumps around about 600-700 hz.  The velocity range only seems to be around 6500 hz from 0-10mm (3/8") sensing distance, so, my positional sensitivity sucks at around 0.1 inches.  Just for giggles, I ran the signal through 4 Flip Flops to see if the 'jumping around' would decrease.  It didn't.  Which leads me to believe the instability is introduced somewhere in my circuitry or wiring.  I even tried connecting Q and Q not outputs into the MESA card as differential signals and twisted the wires.  No help.

Anyhow, This CV2 height sensing device sounds very promising.  

  The velocity range only seems to be around 6500 hz from 0-10mm (3/8")

That does seem quite small, maybe too much stray capacitance on the sensor?

The BCL-AMPs ~2.5 MHz /2 frequency of ~1.25 MHz only gives you about 1250
counts per 1 ms servo period which will end up adding quite a bit of noise.
 This may be improved if you set the hires-timestamp of the encoder true but
a better solution may to use the periodm's frequency output as it does frequency
estimation by 1/period_average:

forum.linuxcnc.org/plasma-laser/51568-in...e-sensor-to-linuxcnc