Junk Filter (I am quite aware that this video is too long)
114 views · Published 6 January 2012 · 8:08 · Indexed 5 October 2026
Channel: JingleJoe · 2012 · Science & Technology
Three light controlled oscillators are connected by an OR gate, to this crappy filter I made from junk I had lying around, two chips: the TL072, which makes the filter and a voltage follower for the envelope, and a 40106 which makes the oscillators and the envelope generator. Nothing is fine tuned so everything is a bit crap but it's definately working! Also the driver circuit for my speaker is just a transistor with two resistors on the base and collector so it doesn't give a true output of what I'm suuuuure is a rich and colourful sound.
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