Re: [Emc-users] More Renishaw questions
On 03/26/2017 04:23 AM, Dave Caroline wrote: > I have tried a SFH213 Photodiode with a comparator but it is a bit > fiddly and not that sensitive, will try a QSE159 when it arrives. > > I don't know exactly what they are doing, the data sheet is pretty sparse on details, but it seems they must have some feedback in the amplifier to keep it just below the trigger threshold without IR pulses. It seemed to work well over quite a good range, although I suspect with the 12 LEDs that the Blum probe puts out a lot of IR. I did work with a photodiode and oscilloscope, and could only see signals on the scope from a few inches away. So, the QSE159 ought to help out quite a bit. Jon -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] More Renishaw questions
I have tried a SFH213 Photodiode with a comparator but it is a bit fiddly and not that sensitive, will try a QSE159 when it arrives. Dave Caroline -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] More Renishaw questions
On 03/23/2017 02:09 PM, Ken Strauss wrote: > I haven't managed to find an OMM + MI7 for an affordable price (this is only > a hobby). My current plan (hope) is to build the equivalent of an OMM. I > assume that what is required is something like a Vishay TEMD1000 photodiode > feeding a TIA and then follow with an Arduino or something similar to decode > the contact/battery low signals. It would be great if I could start with > something that is known to work to acquire the IR signal. > I can't say for the Renishaw, but I used QSE159 sensor module from Digi-Key. Made by Fairchild, it is a sensitive IR detector with amplifier and comparator all built in. It is one of the few that is NOT set up to sense 40 KHz or whatever frequency is used by IR remote controls for entertainment devices. It worked great for picking up the output of my Blum probe. It has a dozen IR LEDs wrapped around the circumference of the probe to send condition back to the IR interface. Jon -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] More Renishaw questions
Switch on is not a problem for me since the MP7 has an inbuilt centrifugal power switch according to the docs -- spin the probe at 500 rpm for a few seconds to turn on and then spin it again to turn off. I would appreciate any information on your homebrew OMM that you're willing to share. Please keep us informed of any web details. > -Original Message- > From: Dave Caroline [mailto:dave.thearchiv...@gmail.com] > Sent: Friday, March 24, 2017 12:01 AM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] More Renishaw questions > > Ken I have a LT02 and that is switched on by a just about any infrared pulse > waveform and the return appears to be 115k baud optical, I am building my > own OMM with an arduino MI as soon as I get around to it, had to get a fast > opto diode an opto transistor I first obtained was deaf and too slow (less than > an inch to get a signal) > > Results will be on the web soon. > > Dave Caroline > > -- > Check out the vibrant tech community on one of the world's most engaging > tech sites, Slashdot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] More Renishaw questions
Ken I have a LT02 and that is switched on by a just about any infrared pulse waveform and the return appears to be 115k baud optical, I am building my own OMM with an arduino MI as soon as I get around to it, had to get a fast opto diode an opto transistor I first obtained was deaf and too slow (less than an inch to get a signal) Results will be on the web soon. Dave Caroline -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] More Renishaw questions
On 23 March 2017 at 18:28, Ken Strauss wrote: > >From postings on this list earlier this year I believe that Sarah Armstrong > and Rene Hopf (and perhaps others) have had some success interfacing to a > Renishaw MP10 or similar probe. I recently got an MP7 so I'm very interested. I decided not to bother with the inductive link on mine, and only retained the probe itself, hard-wiring it to a GPIO. I got a little bit fancy with a home-made "Magsafe" style connector, in case I ever forgot to remove it before starting the spindle. This approach saves me a fair bit of headroom, which is a plus with my small mill. https://goo.gl/photos/snGgoumya4gXL3Ar8 I kept the ball interface betwixt the probe and the arbour, there is a gap where the screws are to allow the probe-ball to be centred. -- atp "A motorcycle is a bicycle with a pandemonium attachment and is designed for the especial use of mechanical geniuses, daredevils and lunatics." — George Fitch, Atlanta Constitution Newspaper, 1916 -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] More Renishaw questions
I haven't managed to find an OMM + MI7 for an affordable price (this is only a hobby). My current plan (hope) is to build the equivalent of an OMM. I assume that what is required is something like a Vishay TEMD1000 photodiode feeding a TIA and then follow with an Arduino or something similar to decode the contact/battery low signals. It would be great if I could start with something that is known to work to acquire the IR signal. > -Original Message- > From: Erik Friesen [mailto:e...@aercon.net] > Sent: Thursday, March 23, 2017 2:39 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] More Renishaw questions > > Do you have an OMI, or are you trying to connect directly with your own? > > On Thu, Mar 23, 2017 at 2:28 PM, Ken Strauss > wrote: > > > >From postings on this list earlier this year I believe that Sarah > > Armstrong > > and Rene Hopf (and perhaps others) have had some success interfacing > > to a Renishaw MP10 or similar probe. I recently got an MP7 so I'm very > > interested. > > > > Can anyone provide details of the electronics that they used used to > > detect and cleanup the IR signal? What was the range for reliable pickup? > > > > > > > > > > -- > > Check out the vibrant tech community on one of the world's most > > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > > ___ > > Emc-users mailing list > > Emc-users@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/emc-users > > > -- > Check out the vibrant tech community on one of the world's most engaging > tech sites, Slashdot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
Re: [Emc-users] More Renishaw questions
Do you have an OMI, or are you trying to connect directly with your own? On Thu, Mar 23, 2017 at 2:28 PM, Ken Strauss wrote: > >From postings on this list earlier this year I believe that Sarah > Armstrong > and Rene Hopf (and perhaps others) have had some success interfacing to a > Renishaw MP10 or similar probe. I recently got an MP7 so I'm very > interested. > > Can anyone provide details of the electronics that they used used to detect > and cleanup the IR signal? What was the range for reliable pickup? > > > > > -- > Check out the vibrant tech community on one of the world's most > engaging tech sites, Slashdot.org! http://sdm.link/slashdot > ___ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
[Emc-users] More Renishaw questions
>From postings on this list earlier this year I believe that Sarah Armstrong and Rene Hopf (and perhaps others) have had some success interfacing to a Renishaw MP10 or similar probe. I recently got an MP7 so I'm very interested. Can anyone provide details of the electronics that they used used to detect and cleanup the IR signal? What was the range for reliable pickup? -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users