<div dir="ltr">Mutable Instruments Rings module sends a stream of known random values to the switching jack, which are then read back in by the MCU to see if the switch is still connected to the tip:<div><br></div><div><a href="https://github.com/pichenettes/eurorack/blob/master/rings/cv_scaler.cc">https://github.com/pichenettes/eurorack/blob/master/rings/cv_scaler.cc</a><br></div><div><br></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Jul 23, 2018 at 5:21 PM, Tim Ressel <span dir="ltr"><<a href="mailto:timr@circuitabbey.com" target="_blank">timr@circuitabbey.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello supremely helpful folks!<br>
<br>
I've got another challenge: how to detect when a plug is inserted into a jack. These are 3.5mm mono jacks btw. The current method is to use a stereo jack. When a mono plug is inserted the ring connection gets shorted to ground by the sleeve of the plug. This method works well, but the stereo jacks are taller than the mono jacks.<br>
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The only jack I can use is a switched mono jack where switched port is tied to the tip port until a plug is inserted. My idea is to use the switch port to feed an out of range voltage to the tip port, probably a negative voltage. Then use a comparator to detect when the tip port goes high.<br>
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Any other thoughts?<span class="HOEnZb"><font color="#888888"><br>
<br>
-- <br>
--Tim Ressel<br>
Circuit Abbey<br>
<a href="mailto:timr@circuitabbey.com" target="_blank">timr@circuitabbey.com</a><br>
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