synth_tools

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(for portamento), attack decay sustain release envelope generator synth module. Layout and panel are Kosmo format. * [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 ## GitHub repository https://github.com/holmesrichards/precadsr Submodules git clone git@gitlab.com:rsholmes/precadsr.git git submodule update Find and replace last few thin traces, fix teardrops and gnd fill db7d02719b68f4d2f81a25d8b6527257f18cc3a1 Embiggen traces, add teardrops 46614f2341 Add 55k-ish resistor to coarse knob to fix tuning range 's notes on repique/caixa, two or three for surdos Samba Reggae 1 Samba Reggae 1

BSD

Back surdo (L for low, H for high R/L: accented note (right/left hand suggested) r/l: quieter note * A trill, generally three very fast notes on repique/caixa, two or three for surdos

paper "A4") updates to rev 2 beta edits README.md file Latest commits for file Schematics/Dual_VCA.diy Bring in diylc and openscad design ec67859b1c2779470b99801ce69f8850b83fa3e1 Start of LM13700 version to see why 0d3d72c49e Use THT electrolytics, finish SMT layout, try on quentin font for size Compare 2 commits » 2bd01a1ff2 Add schematic, start on PCB with on-board components PCB initial layout, no traces "other_line_width": 0.15, PCB initial layout, no traces }, Add ground fills, fix some clearance issues, make all power traces large "rules": { PCB initial layout, no traces "min_copper_edge_clearance": 0.0, PCB initial layout, no traces One SPST switch to disable reset (run once). Momentary-normal-off pushbutton to manually step. SPST switch to disable reset (run once). Momentary-normal-off pushbutton to manually reset. LEDs: One per step, to set output voltages. (10) One potentiometer for internal clock rate. Arrasta Playbook REP: repique CAX: caixa MSD: mid surdo BSD: back surdo (L for low, H for high)

R/L

Accented note (right/left hand suggested)

r/l

Quieter, unaccented note

A trill, generally three very fast notes on repique/caixa, two or three for surdos Common break specific to any person obtaining a copy MIT License Copyright (c) 2014 Alexandre Cesaro Permission is hereby granted, free of charge, to any person obtaining a copy of Copyright (c) 2015 "1910" www.weare1910.com Permission is hereby granted, free of charge, to any person obtaining a copy THE SOFTWARE. Copyright (c) 2009 The Go Authors. Extensions copyright (c) 2011, Miek Gieben.

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