<div dir="auto">Teenage Engineering OP-Z has hall sensor encoders:<div dir="auto"><br><div dir="auto"><a href="https://boulderhackerspace.com/2018/10/31/teenage-engineering-op-z-teardown/" target="_blank" rel="noreferrer">https://boulderhackerspace.com/2018/10/31/teenage-engineering-op-z-teardown/</a><br></div><div dir="auto"><br></div><div dir="auto">From the official product spec:</div><div dir="auto"><br></div><div dir="auto">"unique encoder design</div><div dir="auto">teenage engineering designed floating ball bearing hall sensor encoders for minimal stacking height and wear."</div><div dir="auto"><br></div><div dir="auto"><a href="https://teenage.engineering/products/op-z">https://teenage.engineering/products/op-z</a><br></div><div dir="auto"><br></div><div dir="auto">Any other synths out there with hall effect? (-:</div><div dir="auto"><br></div><div dir="auto">/mr</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">Den sön 26 juli 2020 09:01ASSI <<a href="mailto:Stromeko@nexgo.de" target="_blank" rel="noreferrer">Stromeko@nexgo.de</a>> skrev:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">On Samstag, 25. Juli 2020 21:58:22 CEST Ben Bradley wrote:<br>
> Now that I see that, I remember seeing a similar magnetic rotary<br>
> sensor years ago, that probably gave me the idea for this. The reason<br>
> I came up with using two single-axis Hall effect sensors is two of<br>
> them are still several dollars less than a one-chip angle sensor at<br>
> about $6 each.<br>
<br>
You don't do that.  By the time you've figured out the how to align and <br>
calibrate the magnetic circuits you'll be several times that dollar amount <br>
short unless your time is worth nothing.  Instead you use a sensor that has <br>
multiple Hall elements integrated and the necessary compensation already built <br>
in, like the TLV493D (disclosure: I work for the manufacturer, but not on that <br>
product line).  There's an eval kit that comes with magnetics and everything <br>
should you want to try it:<br>
<br>
<a href="https://www.infineon.com/cms/en/product/sensor/magnetic-sensors/magnetic-position-sensors/3d-magnetics/tlv493d-a1b6/" rel="noreferrer noreferrer noreferrer" target="_blank">https://www.infineon.com/cms/en/product/sensor/magnetic-sensors/magnetic-position-sensors/3d-magnetics/tlv493d-a1b6/</a><br>
<a href="https://www.infineon.com/cms/en/product/evaluation-boards/mini_control2go/" rel="noreferrer noreferrer noreferrer" target="_blank">https://www.infineon.com/cms/en/product/evaluation-boards/mini_control2go/</a><br>
<br>
There's even code on GitHub that you can crib (it also has the 3D print data <br>
for the knobs).<br>
<br>
<a href="https://github.com/Infineon/TLV493D-A1B6-3DMagnetic-Sensor" rel="noreferrer noreferrer noreferrer" target="_blank">https://github.com/Infineon/TLV493D-A1B6-3DMagnetic-Sensor</a><br>
<br>
<br>
Regards,<br>
Achim.<br>
-- <br>
+<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk Blofeld]>+<br>
<br>
Wavetables for the Terratec KOMPLEXER:<br>
<a href="http://Synth.Stromeko.net/Downloads.html#KomplexerWaves" rel="noreferrer noreferrer noreferrer" target="_blank">http://Synth.Stromeko.net/Downloads.html#KomplexerWaves</a><br>
<br>
<br>
<br>
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</blockquote></div>