{"id":699,"date":"2012-05-10T22:09:25","date_gmt":"2012-05-11T02:09:25","guid":{"rendered":"http:\/\/hackaweek.com\/hacks\/?p=699"},"modified":"2012-06-12T12:53:12","modified_gmt":"2012-06-12T16:53:12","slug":"the-555-slider-synth","status":"publish","type":"post","link":"http:\/\/hackaweek.com\/hacks\/the-555-slider-synth\/","title":{"rendered":"The 555 Slider Synth"},"content":{"rendered":"<p>Here&#8217;s a fun project to make with the 555 chip.<br \/>\nHere&#8217;s how it works. When it&#8217;s turned on by pressing SW1, the 555 astable oscillator is activated. It will produce a tone through the speaker that can be varied in pitch by changing the distance between the LED and the photo cell. The photo cell is mounted at one end of a 1\/4&#8243; diameter tube which shields it from 99% of the light. The LED is mounted on a piece of music wire and inserted into the tube. You change pitch by simply moving the wire in and out. Move it inwards and get a higher frequency tone. Move it outwards and the tone goes down in frequency. You can build the device as I have shown in the pictures and video, or get creative and come up with something new!<\/p>\n<p>I encourage you to try building other circuits with the 555. It&#8217;s a very versatile chip with many applications.<br \/>\nHave fun and&#8230;<\/p>\n<p>Keep On Hackin!<\/p>\n<p><iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"http:\/\/www.youtube.com\/embed\/Twvc_-uedjg\" frameborder=\"0\" allowfullscreen><\/iframe><\/p>\n<p><strong>Parts list:<\/strong><br \/>\n2 &#8211; 100 Ohm ohm resistors<br \/>\n1 &#8211; Photo Cell also call Light Dependent Resistor (LDR)<br \/>\n1 &#8211; 2.2 mF Electrolytic capacitor<br \/>\n1 &#8211; 100 mF Electrolytic capacitor<br \/>\n1 &#8211; Bright white LED<br \/>\n1 &#8211; LM555 8 pin DIP timer chip<br \/>\n1 &#8211; Small speaker<br \/>\n1 &#8211; Momentary push button switch<br \/>\n1 &#8211; 9 volt battery<br \/>\n1 &#8211; 9 volt battery clip<br \/>\n1 &#8211; small perf board to mount components on<br \/>\nHook up wire<br \/>\n5&#8243; length of music wire or large paper clip.<\/p>\n<p><strong>Rob Paisley&#8217;s 555 timer circuit page.<\/strong><br \/>\nThis has a TON of great info on the 555 including a few timing calculators to aid in component selection.<br \/>\n<a href=\"http:\/\/home.cogeco.ca\/~rpaisley4\/LM555.html\">http:\/\/home.cogeco.ca\/~rpaisley4\/LM555.html<\/a><\/p>\n<p><a href=\"http:\/\/hackaweek.com\/hacks\/?attachment_id=701\" rel=\"attachment wp-att-701\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-schematic-HAW1.jpg\" alt=\"\" title=\"slider synth schematic HAW\" width=\"2850\" height=\"1800\" class=\"alignnone size-full wp-image-701\" srcset=\"http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-schematic-HAW1.jpg 2850w, http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-schematic-HAW1-150x94.jpg 150w, http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-schematic-HAW1-300x189.jpg 300w, http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-schematic-HAW1-1024x646.jpg 1024w\" sizes=\"auto, (max-width: 2850px) 100vw, 2850px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/hackaweek.com\/hacks\/?attachment_id=702\" rel=\"attachment wp-att-702\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth2.jpg\" alt=\"\" title=\"slider synth2\" width=\"800\" height=\"506\" class=\"alignnone size-full wp-image-702\" srcset=\"http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth2.jpg 800w, http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth2-150x94.jpg 150w, http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth2-300x189.jpg 300w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/hackaweek.com\/hacks\/?attachment_id=706\" rel=\"attachment wp-att-706\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-closeup.jpg\" alt=\"\" title=\"slider synth closeup\" width=\"800\" height=\"533\" class=\"alignnone size-full wp-image-706\" srcset=\"http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-closeup.jpg 800w, http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-closeup-150x99.jpg 150w, http:\/\/hackaweek.com\/hacks\/wp-content\/uploads\/2012\/05\/slider-synth-closeup-300x199.jpg 300w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Here&#8217;s a fun project to make with the 555 chip. Here&#8217;s how it works. When it&#8217;s turned on by pressing SW1, the 555 astable oscillator is activated. It will produce a tone through the speaker that can be varied in &hellip; <a href=\"http:\/\/hackaweek.com\/hacks\/the-555-slider-synth\/\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"class_list":["post-699","post","type-post","status-publish","format-standard","hentry","category-hacks"],"_links":{"self":[{"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/posts\/699","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/comments?post=699"}],"version-history":[{"count":10,"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/posts\/699\/revisions"}],"predecessor-version":[{"id":745,"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/posts\/699\/revisions\/745"}],"wp:attachment":[{"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/media?parent=699"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/categories?post=699"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/hackaweek.com\/hacks\/wp-json\/wp\/v2\/tags?post=699"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}