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C64 Theremin — Parallax Forums

C64 Theremin

PublisonPublison Posts: 12,366
edited 2022-09-02 08:54 in General Discussion

Linus is at it again, (no props this time).

https://www.linusakesson.net/hardware/theremin/

He did a wonderful demo with the P1 here:

https://www.linusakesson.net/scene/turbulence/index.php

li

Comments

  • Phil Pilgrim (PhiPi)Phil Pilgrim (PhiPi) Posts: 23,514

    There's a big difference in quality between the original Theremin's sine waves and the square waves burped out by the C64.

    -Phil

  • PublisonPublison Posts: 12,366

    @"Phil Pilgrim (PhiPi)" said:
    Theres a big difference in quality between the original Theremin's sine waves and the square waves burped out by the C64.

    -Phil

    Agreed. I have played a couple of MOOG units back in the 80's and 90's.

  • ercoerco Posts: 20,256

    GENIUS! Love this. Amazing Grace never sounded so good.

    @Whit needs to play this in his church!

  • pik33pik33 Posts: 2,366
    edited 2022-11-19 22:14

    So I got 2 555s and solder one of these (2 needed) lft's 555 contraptions. It works, generating something about 500kHz. Instead of C64 I connected the output to a P2 and made a quick program using one of my audio drivers. It plays (whatever waveform I want), I can change the audio frequency with my hand over a piece of wire.

    To do: solder the second 555 to control the volume, make the real program for a P2, add several encoders to adjust "zero beat" and ranges.

    Then I wonder if it is possible to make a theremin with a P2 and nothing else...

  • msrobotsmsrobots Posts: 3,709

    that Goerzel demo from chip may give hints to do so.

    Mike

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