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<p>Issues I see with a sin/cos pot;</p>
<p>Use of 2 x ADC channels (more expensive than logic inputs)</p>
<p>Slightly more complex software for reading/processing the sin/cos outputs.</p>
<p>Advantge; you get an absolute position.</p>
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<p>if you want more resolution from a regular grey code rotary encoder. you can use double edge triggering.</p>
<p>So instead of just picking the rising edge on one channel, use both edges, this will give you 48PPQN with a 24PPQN encoder.</p>
<p>I guess, though not tested, you could go a step further and use edge detection on both channels and both edges on both channels giving you 96PPQN from a 24PPQN encoder, though I would expect switch bounce to cause more of a problem at this resolution.</p>
<p>Downside; no absolute position.</p>
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<p>Paula</p>
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<p>On 2017-07-10 11:31, Julian Schmidt wrote:</p>
<blockquote type="cite" style="padding: 0 0.4em; border-left: #1010ff 2px solid; margin: 0"><!-- html ignored --> <!-- head ignored --><!-- meta ignored --> I also found them at <span style="font-size: 10.0pt; font-family: 'Arial','sans-serif'; color: #1f497d;"><a href="http://www.adimpex.it/">www.adimpex.it</a> for 1.15€/pcs. but they have a minimum order amount of 200€ :-/<br /> still looking for a better sample source.<br /> </span><br />
<div class="moz-cite-prefix">Am 10.07.2017 um 12:09 schrieb Michael Zacherl:</div>
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<pre>On 9.Jul 2017, at 12:42 , Julian Schmidt <a class="moz-txt-link-rfc2396E" href="mailto:elfenjunge@gmx.net"><elfenjunge@gmx.net></a> wrote:
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<pre>Anybody has an idea what the part number for the continuous alpha pots is?
I just asked the other day for an encoder alternative with higher resolution, they would be great!
Maybe I'd have to ask my distributor in taiwan about them.
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<pre>Thanks for sharing, didn't know such a pot exists.
How would you tell the direction of the movement?
BTW, $15 ... hm ... needs quantities I'd guess ...
<a class="moz-txt-link-freetext" href="https://www.aliexpress.com/item/1pcs-ALPHA-RV112FF-40B3N-22F-0B10K-Encoder-360-degree-turn-gain-potentiometer/32751858615.html">https://www.aliexpress.com/item/1pcs-ALPHA-RV112FF-40B3N-22F-0B10K-Encoder-360-degree-turn-gain-potentiometer/32751858615.html</a>
Thanks, Michael.
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