This is a very simple 555 timer based dual VCO. It fits nicely in any eurorack.

Sample output: https://vanheusden.com/permshare/magical555vco-v0.2.flac or listen in your browser at: https://vanheusden.com/electronics/Magical555VCO/audio-player.php

• schematics are under media/magical555vco.pdf

Folkert van Heusden [email protected]