Wednesday, February 16, 2011
Synthanola - Bach Invention's 8 and 13 - Punch Tape Sequencer
YouTube via 256byteram | February 14, 2011 |
"This video demonstrates two paper tapes which play Inventions 8 and 13 by J.S. Bach.
Sorry about the jumpy video. My computer must have been doing something at the time. My hands can't actually move that quickly.
More information at .http://kaput.retroarchive.org/555/"
"It is a three channel music synthesiser, capable of four octaves per chanel. The 555's are used to generate each octave for each voice (or channel). There are twelve 555 timer IC's used for the synthesiser section and two more for tempo control and paper speed. It is sequenced by a Heathkit H-10 paper tape unit and programmed with a 486 PC running QBasic (seriously, it's easier).
There are a few reasons why I chose to use a paper tape machine instead of an EEPROM and counters, or a microcontroller. First, I wanted this project to be made with components available in the 1970's. Also, I think it looks better to have something moving with the music and I'm not a great fan of using IC's with bazillions of transistors in them."
555 Contest Entry - Synthanola
256byteram | February 13, 2011
"This is my 555 Contest (www.555contest.com) entry. It is an analogue synthesiser based on 555 timers, with three channels and four octaves per channel. It is sequenced with either paper tape (as shown) or by any 8-bit interface with suitable flow control.
More details and circuit diagrams at http://kaput.retroarchive.org/555/"
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
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