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Cascade out is easier done via skywiring; only one tl074 and support Kassutronic's KS-20 VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules Latest commits for file Docs/precadsr_bom.md abc39a50d6 Delete '3D Printing/AD&D 1e spell names in Filmoscope Quentin/Panels/MIRROR IMAGE.png Normal file View File Schematics/Kassutronics_Slope_Build_Docs_2.0A.pdf Normal file View File 3D Printing/Cases/Eurorack Modular Case/DSC03777.JPG Executable file View File Hardware/PCB/precadsr/precadsr.net Normal file View File Synth_Manuals/LABOR_MANUAL.pdf Normal file View File Hardware/PCB/precadsr_aux_Gerbers/precadsr-B_Mask.gbr Normal file View File b404e3f9c5 Update luther's layout Update luther's layout Update luther's layout Drill report for precadsr-panel.kicad_pcb Created on Tue Mar 5 20:19:51 2024 Copper Layer Stackup: ============================================================= L1 : F.Cu front L2 : B.Cu back Drill file 'precadsr-panel.drl' contains T1 3.200mm 0.1260" (4 holes) (with 4 slots) T2 5.000mm 0.1969" (1 hole) Total plated holes unplated through holes: ============================================================= From a22bca6d29ddc0a54597dab4d11ad9ab7e48e3c6 Mon Sep 17 00:00:00 2001 Subject: [PATCH 2/2] Update README.md * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to use 7.5mm holes, not 6mm alpha pots - 9.8mm, +2mm - rotary - 11.5mm, +3.5mm -- biggest by far, maybe 12.6mm? Alpha pots: tight, only 1/2 turn for nut 11mm - rotary, SR2511 style, with very large range of in-tune response, but comments discuss potential fixes, maybe worth it for a single 0.15 mm² wire, basic insulation, conductor diameter 2.4mm, see http://www.4uconnector.com/online/object/4udrawing/10687.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00072 pitch 7.5mm size 51.5x15mm^2 drill 1.2mm pad 3mm Terminal Block WAGO 804-304, 45Degree (cable under 45degree), 3 pins, pitch 7.5mm, size 45x11mm^2, drill diamater 1.3mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00023_DB_EN.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block 4Ucon ItemNo. 10699 vertical pitch 5mm Varistor, diameter 9mm, width 4.5mm, pitch 5mm size 30x9mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00086, 10 pins, pitch 5mm, size 16.5x15mm^2, drill diamater 1.3mm, pad diameter 3.2mm, see http://www.metz-connect.com/de/system/files/METZ_CONNECT_U_Contact_Katalog_Anschlusssysteme_fuer_Leiterplatten_DE_31_07_2017_OFF_024803.pdf?language=en page 133, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type055_RT01504HDWU, 4 pins, pitch 3.81mm, size 11.3x7.3mm^2, drill diamater.

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