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"Layer B.Paste" "Notes": "Layer B.Cu" "Notes": "Layer F.Paste" "Notes": "Layer B.Paste" "Notes": "Layer F.Cu" "Notes": "Layers L1/L2" "Notes": "Layer B.SilkS" ; DRILL file {KiCad 5.1.10-88a1d61d58~90~ubuntu20.04.1} date Sat Aug 7 13:40:31 2021 ; DRILL file {KiCad 5.1.10-88a1d61d58~90~ubuntu20.04.1} date Thu Aug 12 11:11:04 2021 ; DRILL file {KiCad 5.1.10-88a1d61d58~90~ubuntu20.04.1} date Sat Aug 7 13:39:59 2021 ; FORMAT={-:-/ absolute / metric / decimal} Hardware/Panel/precadsr-panel-Gerbers/precadsr-panel.gbrjob Normal file Unescape © 2012 Steve Cooley ( http://sc-fa.com , http://beatseqr.com , http://hapticsynapses.com ) © 2021 Matthias Ansorg ( https://ma.juii.net /* [Basic Parameters] */ // Four hole threshold (HP cv_in = [input_column, row_2, 0]; fm_lvl = [second_col, third_row, 0]; fm_lvl = [h_margin+working_width/8, row_3, 0]; cv_in_2b = [right_col, row_1, 0]; triangle_out = [width_mm-h_margin-working_width/4, row_1, 0]; triangle_out = [third_col, fifth_row, 0]; pwm_duty = [second_col, fourth_row, 0]; pwm_cv_lvl = [width_mm - h_margin - working_width/8, row_2, 0]; audio_in_2 = [left_col, row_6, 0]; audio_in_1 = [left_col, row_5, 0]; cv_in_2a = [left_col, row_1, 0]; saw_out = [h_margin + working_width/4, row_1, 0]; audio_out_2 = [right_col, row_2, 0]; audio_in_2 = [left_col, row_3, 0]; pwm_duty = [width_mm - h_margin - working_width/8, row_3, 0]; right_rib_x = width_mm - thickness*2; // draw panel, subtract holes // v_wall(h=4, l=height-rail_clearance*2-thickness); // top horizontal rib // h_wall(h=1.6, l=right_rib_x); // middle-bottom h rib // bottom horizontal rib // h_wall(h=4, l=right_rib_x); // bottom horizontal rib // h_wall(h=4, l=right_rib_x); // middle-bottom h rib // middle horizontal rib // one more vertical to mount a circuit outside the full dev board (in some cases) Arduino + DAC https://www.youtube.com/watch?v=t3kUPjdiq0o for explainer https://drive.google.com/drive/folders/156nn9rClRLJplS4M46s56-Pibi86Z-Kp for schematics and .ino file 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 signal, start/stop, manual step (sw13 // 1 rotary switch, 5+ positions 10 LEDs - one per step // 1 rotary switch - 7mm, with 3-4mm extra space available - mini toggle pushbuttons: ample space above pcb micro toggle: 0mm above panel; could work with spacer but it lacks the second video. Https://youtu.be/frLXzG9-W3Q?t=1197 (variants, especially in the output jacks 2eebdf7ecf Add four more switches/buttons, move LED drivers onto PCB Latest commits for file Images/PXL_20210831_002553634.jpg main synth_tools/README.md 0 lines From 4ee68877235c53d350cd6d734e74936e7f605c70 Mon Sep 17 00:00:00 2001 Subject: [PATCH] Update README.md 085327769df1923053fc21adb0ef584f908b8264 Add befaco.

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