/challenges-projects/design-challenges/experimenting-with-magnetic-components/b/blog/posts/smart-coin-sorter-by-inductive-sensing-01-how-coins-change-coil-impedanceIntroduction Within the Experimenting with magnetic components challenge I am conducting experiments to develop an intelligent coin discriminator using inductive sensitivity. In this first experiment I want to see how the proximity of...en-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/experimenting-with-magnetic-components/b/blog/posts/smart-coin-sorter-by-inductive-sensing-01-how-coins-change-coil-impedanceThu, 14 Oct 2021 10:47:10 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:abe8596d-898a-416f-acf8-7842a1a04a33jc20481<p>Interesting experiments.</p><p>&nbsp;</p><p>Have you experimented with using the side of the coil rather than the top?</p><img src="https://community.element14.com/aggbug?PostID=22213&AppID=339&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/challenges-projects/design-challenges/experimenting-with-magnetic-components/b/blog/posts/smart-coin-sorter-by-inductive-sensing-01-how-coins-change-coil-impedanceThu, 14 Oct 2021 00:46:34 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:abe8596d-898a-416f-acf8-7842a1a04a33shabaz1<p>Hi Enrique,</p><p>&nbsp;</p><p>Nice blog post! Very interesting seeing your measurements, and showing how as the frequency rises, then the metal causes a drop in inductance, versus an increase at lower frequency.. I&#39;d have trouble finding the link (I&#39;m on mobile) but there was a discussion on element14 a while back about this, since we were originally expecting the inductance to always rise. </p><img src="https://community.element14.com/aggbug?PostID=22213&AppID=339&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/challenges-projects/design-challenges/experimenting-with-magnetic-components/b/blog/posts/smart-coin-sorter-by-inductive-sensing-01-how-coins-change-coil-impedanceWed, 13 Oct 2021 11:43:36 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:abe8596d-898a-416f-acf8-7842a1a04a33Fred270<p>I particularly like your use of Lego for the coin holder.</p><img src="https://community.element14.com/aggbug?PostID=22213&AppID=339&AppType=Weblog&ContentType=0" width="1" height="1">https://community.element14.com/challenges-projects/design-challenges/experimenting-with-magnetic-components/b/blog/posts/smart-coin-sorter-by-inductive-sensing-01-how-coins-change-coil-impedanceWed, 13 Oct 2021 11:37:36 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:abe8596d-898a-416f-acf8-7842a1a04a33rsjawale241<p>This is a cool application!</p><p>Very well explained and experimental analysis is detailed.<br />Wish I had an instrument like Analog Discovery to perform such experiments.</p><img src="https://community.element14.com/aggbug?PostID=22213&AppID=339&AppType=Weblog&ContentType=0" width="1" height="1">