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BackSocket A-004 4 Knobs Screws, nuts, and spacers (see build notes Change C13 to 10 Alternative: Midi -> CV Alternative: CV from something else VCF MK's Diode Ladder VCF 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 either internal or external clock signal, start/stop, manual step (sw13) - pushbutton // manual step (sw13) - pushbutton // glide manual (rv16 // 1 rotary switch to adjust CV output range, switch between 5v and 2.5v max (or whatever is configured). - Momentary-normal-off pushbutton to manually reset. More repo cleanup, adopt github .gitignore file ad96459571a569a983e452184e49702fe8779c4e created pull request 'Fix rail clearance = ~11.675mm, top and bottom railHeight = (threeUHeight-panelOuterHeight)/2; mountSurfaceHeight = (panelOuterHeight-panelInnerHeight-railHeight*2)/2; panelInnerOffset = (panelOuterHeight-panelInnerHeight)/2; echo("railHeight: ", railHeight); offsetToMountHoleCenterX = hp - holeOffset; // 1 rotary switch, 5+ positions - 10 LEDs 3 sockets Subject: [PATCH] More SR1 notation SR 1.pdf More SR1 notation 2d3c489f2acf0f8bdc9cf0fe8c2346d4d07472be b1fcba1e78f37669542b35a3e32a5257c5c0240c 9060b76361734f9abf9a1c676dd9110e9ced917b initial kicad project .../OttosIrresistableDance.kicad_pcb | 2 Examples/EG_MANUAL.pdf | Bin 0 -> 13714 bytes .../precadsr-panel-Gerbers/precadsr-panel.drl | 47 .../precadsr-panel.gbrjob | 126 .../precadsr-panel/precadsr-panel-cache.lib | 106 .../precadsr-panel-rescue.kicad_sym | 228 .../precadsr-panel/precadsr-panel.kicad_pro | 481 .../precadsr-panel/precadsr-panel.kicad_sch | 831 Hardware/Panel/precadsr-panel/sym-lib-table | 4 | 100 nF | Unpolarized capacitor | | | S3 | 1 | ICM7555xP | CMOS General Purpose Timer, 555 compatible, PDIP-8 Quad operational amplifier, DIP-14