[sdiy] Rotary Encoder Question

[Sowa Roman]

haven't though of that this way.
This might work. Thanks!

Roman

""-----Original Message-----
""From: Forbes, William - EE - UK/Leamington
""[mailto:william.forbes at luk-asg.com]
""Sent: Thursday, January 10, 2002 3:52 PM
""To: 'Sowa Roman'; 'Dr Steve Grainger'; synth-diy at dropmix.xs4all.nl
""Subject: RE: [sdiy] Rotary Encoder Question
""
""
""Hi
""The ALPS type come in "audio" type where there is no detent 
""or notched feel
""to the pot.
""With these, it is possible to decode the outputs such that 
""each quarter of
""the phase can give a step.
""This then effectively give you 24*4 98 steps per rev.
""
""Cheers,
""Bill.
""
""> -----Original Message-----
""> From: Sowa Roman [mailto:Roman.Sowa at upc.com.pl]
""> Sent: 10 January 2002 14:25
""> To: 'Dr Steve Grainger'; synth-diy at dropmix.xs4all.nl
""> Subject: RE: [sdiy] Rotary Encoder Question
""> 
""> 
""> There's this mechanical encoder, which according to description
""> makes pulses on one pin when turned clockwise, and pulses
""> on other pin when turn counterclock. By pulses I mean shorting
""> and releasing contacts. And there are plenty of standard
""> "quadrature modulation" encoders.
""> 
""> All those I described cost about 4-6 EUR, can be mounted like
""> potentiometers, have 20-24 pulses per rotation, are made
""> by ALPS and are available in www.elfa.se
""> Haven't tried them though.
""> 
""> Many years searching for device able to produce more than
""> 40 pulses per rotation and not costing a fortune made me
""> give up on using them at all.
""> 
""> Roman


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