A Eurorack ring Modulator

Based on a design by Mutable Instruments: https://mutable-instruments.net/modules/links/ Olivier Gillet ol.gillet@gmail.com released under a cc-by-sa-3.0 license https://creativecommons.org/licenses/by-sa/3.0/ This version Andy C andy@r2-dvd.org Changes: Removed 2:2 section Increased input and outputs to 4:1 and 1:4 Changed packaging of chips for easier construction Changed orientation of sockets to bottom side of the board.