{"id":398,"date":"2012-03-27T23:26:00","date_gmt":"2012-03-27T23:26:00","guid":{"rendered":"http:\/\/dbbd.sg\/blog\/uncategorized\/coin-mechanisms\/"},"modified":"2022-03-09T07:35:54","modified_gmt":"2022-03-09T07:35:54","slug":"coin-mechanisms","status":"publish","type":"post","link":"https:\/\/dbbd.sg\/blog\/2012\/03\/coin-mechanisms\/","title":{"rendered":"Coin Mechanisms"},"content":{"rendered":"<p><b>Thoughts on simple ways to build a coin mechanism:<br \/>\n<\/b><br \/>\nWhile talking with a friend a few days ago I thought about switches and mechanisms and googled for coin mechanisms. This site underthepier has a great guide to <a href=\"http:\/\/www.underthepier.com\/01_howtocoinmech.htm\">how to make coin mechanisms<\/a> on your own, and it seems like the best methods are as follows:<\/p>\n<ul>\n<li>inductive sensor (triggered when metal is close)<\/li>\n<li>opto switch (triggered when light beam is broken)<\/li>\n<li>torque switch (triggered when a tiny lever arm is depressed by a small weight)<\/li>\n<\/ul>\n<p>I also recalled that i once had a device with a &#8220;wind&#8221; detector. It was a electric candle which would &#8220;go out in the wind&#8221;, but it did not actually measure airflow. I took it apart one day and realised it was a microphone inside with an amplifier! When the wind blew, it blew against the tiny mic which was amplified. When another sensor detected the sound waves, this triggered the off switch.<\/p>\n<p>I don&#8217;t know what are the local brands for coin acceptors. I suppose the toy capsule dispensers ought to have this sorted though! The ones that are popular here are the Gashapon (\u30ac\u30b7\u30e3\u30dd\u30f3) machines, called so because of the &#8220;gasha&#8221; noise they make when you turn the lever and the &#8220;pon&#8221; when the capsule is ejected. I wonder if there is a cheaper localised version of this tikam tikam machine that one can buy and repurpose&#8230;.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Thoughts on simple ways to build a coin mechanism: While talking with a friend a few days ago I thought about switches and mechanisms and googled for coin mechanisms. This site underthepier has a great guide to how to make coin mechanisms on your own, and it seems like the best methods are as follows: [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[933,934],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/posts\/398"}],"collection":[{"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/comments?post=398"}],"version-history":[{"count":1,"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/posts\/398\/revisions"}],"predecessor-version":[{"id":2525,"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/posts\/398\/revisions\/2525"}],"wp:attachment":[{"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/media?parent=398"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/categories?post=398"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dbbd.sg\/blog\/wp-json\/wp\/v2\/tags?post=398"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}