Hi All

This thread and it's follow on triggered my interest, so I just snagged 
a Renishaw MP3 probe on Ebay and now face the task of interfacing this 
to my New CNC mill which I am due to pickup later this week.  I ordered 
the mill with LinuxCNC using the Mesa cards to interface to the 
computer.  The mill uses Servo's on X,Y,Z.  It is a small mill with a 12 
position tool changer, thus I am hoping to put the probe in one of the 
pockets and use it to sense work-piece position, and also to digitize.  
While this is my Hobby mill I am hoping to get close to 100micro inches 
repeatability.  I would appreciate any pointers to available data for 
building/buying a relatively inexpensive transmitter receiver for this 

On 9/8/16 11:07 AM, Jon Elson wrote:
> On 09/08/2016 09:56 AM, Florian Rist wrote:
>> Hi Jon
>>> Yes, I thought about building a receiver out of various
>>> parts, but there are application specific parts that combine
>>> all this in one unit.  Most are made with 38 KHz band pass
>>> filters for VCR remote controls,
>> Yes, that's why I didn't even look into theses integrated devices.
>>> but the QSE159 does not
>>> have the BPF, looked to be sensitive enough, and was really
>>> cheap ($1.06)
>> Indeed, interesting.
>> Not sure if it is sensitive enough, 0.25 mW/cm² worst case translates to
>> 2.5W/m², that's quite a lot. But, now that I started looking, there are
>> quite a few similar integrated devices available, some with much high
>> sensitivity down to at least 10µW/cm². However most are lacking the
>> Schmitt-trigger of the QSE159, nice part, that you found, I'm going to
>> get one, too.
> I have no idea what the radiated power of the Blum probe is,
> but it has 12 big surface-mount LEDs arranged around the
> periphery.  The QSE sensor picks it up very well out past
> 6", which is all the sensitivity I will need.
> Jon
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