Re: [Emc-users] Possible lathe spindle encoder.

2015-07-30 Thread Ken Strauss
Has anyone found a source for the ATS694? Digikey doesn't have a listing... > -Original Message- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: Wednesday, July 29, 2015 3:38 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Possible lathe sp

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread Ken Strauss
> -Original Message- > From: andy pugh [mailto:bodge...@gmail.com] > Sent: Wednesday, July 29, 2015 3:38 PM > To: Enhanced Machine Controller (EMC) > Subject: Re: [Emc-users] Possible lathe spindle encoder. > > A useful allegro publication, google for AN296089 (I can&

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread Jerry Scharf
Andy, Thanks for the info about how the cars came to use a missing pulse. I love how these historic things come back around. It's great that the standard railroad gauge is set to the width to the wheels of a roman war chariot. jerry On Wed, Jul 29, 2015 at 12:21 PM, andy pugh wrote: > On 29 J

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread andy pugh
A useful allegro publication, google for AN296089 (I can't seem to get a link out of google) -- atp If you can't fix it, you don't own it. http://www.ifixit.com/Manifesto -- __

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread andy pugh
On 29 July 2015 at 19:42, Jerry Scharf wrote: The "dual channel" is the independent output of the two hall effect > transducers (available only in the surface mount part.) The other two > outputs are direction (simple binary pin) and speed. Speed is the XOR of > the two transducers, so it produce

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread Jerry Scharf
Andy, I read the datasheet and it looks really easy. The "dual channel" is the independent output of the two hall effect transducers (available only in the surface mount part.) The other two outputs are direction (simple binary pin) and speed. Speed is the XOR of the two transducers, so it produc

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread andy pugh
On 29 July 2015 at 18:41, andy pugh wrote: > > I can't find a source for the sensor in the US. >> > > I think this is the one: > http://www.digikey.com/product-detail/en/A1233LK-T/620-1487-ND/3878417 > > Actually, that's a 2-channel one, rather than the 1-channel. I don't know how you would detec

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread andy pugh
On 29 July 2015 at 18:32, Dave Cole wrote: > Does Ford buy them via Amazon ?? ;-) The price is right. > > http://www.amazon.co.uk/Febi-36070-Crankshaft-Timing-Wheel/dp/B00CD3DHXO > > I can't find a source for the sensor in the US. > I think this is the one: http://www.digikey.com/product-detail

Re: [Emc-users] Possible lathe spindle encoder.

2015-07-29 Thread Dave Cole
Does Ford buy them via Amazon ?? ;-) The price is right. http://www.amazon.co.uk/Febi-36070-Crankshaft-Timing-Wheel/dp/B00CD3DHXO I can't find a source for the sensor in the US. Dave On 7/28/2015 6:01 AM, andy pugh wrote: > Now that many cars have automatic stop/start there is a requirement

[Emc-users] Possible lathe spindle encoder.

2015-07-28 Thread andy pugh
Now that many cars have automatic stop/start there is a requirement for bidirectional crank position sensors. (So that the PCM can track crank position if the crank rocks-back and still fire on the first TDC). The sensors are (often) a magnetic track on the outside of a wheel. The ones I have here