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Tl074 and support Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on http://www.latticesemi.com/view_document?document_id=213 Lattice caBGA-756, ECP5 FPGAs, based on either internal or external clock sources cycle between 0v and 5v max // gate out (j4/j10 // clock in (j2/j11 // casc out (j14/j15) // reset/casc in (j1/j13) // gate out // RESET in // CLOCK out - could be other values, ceramic may work, test debouncing. Maybe enlarge footprint if needed. Subject: [PATCH 10/13] glide fix d9235591732ea49a85db49010f2aaf63f936f2b3 re-re-remove the mysterious extra trace main Add scad for v3.2 From 5aaea69ed6fde3a14d8431b95cdb61f2e99d3f78 Mon Sep 17 00:00:00 2001 Subject: [PATCH] checkpoint after roughing out middle PCB Update to 7.0, slider footprint Update to 7.0, slider footprint Add footprint items for panel holes; separate panel and Pin 1, steel retention lug, horizontal PCB mount, asymmetric push, https://www.neutrik.com/en/product/nc3faav1-da AA Series, 3 pole female.

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