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Back3.8 x 3.8mm SAW filter package based on ** https://www.instructables.com/Another-MIDI-to-CV-Box-/ yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another version 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 the mid surdos. * : trill, generally three very fast notes on updating the fireball for rev 2 d89db83df1 revised README.md to rev 2 beta edits README.md file Binary files a/3D Printing/Panels/FIREBALL VCO.png | Bin 0 -> 92229 bytes Panels/FireballSpellSmall.png | Bin 0 -> 36336 bytes create mode 100644 3D Printing/Pot_Knobs/scaled_french_pot.mix Normal file View File 3D Printing/Cases/Eurorack Modular Case/EuroRack_Case_26.stl Executable file View File 3D Printing/AD&D 1e spell names in Filmoscope Quentin/Panels/SPIDER CLIMB.png' 48c8a4e4f4fcbe006366a8816f63cc69d2b79d5a Delete '3D Printing/AD&D 1e spell names in Filmoscope Quentin/Panels/MAGIC MISSILE VCF.png' f1ff8406b4 Delete '3D Printing/Panels/FIREBALL VCO.png' # precadsr.sch BOM Optional capacitor socket # Temporary files *.000 *.bak *.bck *.kicad_pcb-bak *.kicad_sch-bak *-backups *.kicad_prl *.sch-bak *~ _autosave-* *.tmp *-save.pro *-save.kicad_pcb fp-info-cache *.lck # Netlist files (exported from Eeschema *.net # Autorouter files (exported from Pcbnew) *.dsn *.ses Fireball/Fireball VCO saw wave core.circuitjs.txt Normal file View File 3D Printing/Cases/Eurorack Modular Case/EuroRack_Case_26.png Executable file View File Schematics/Unseen Servant/fp-info-cache | 399 2 5mm LEDs Latest commits for file Schematics/OttosIrresistableDance/OttosIrresistableDance.kicad_sch From 2666d5803f3b2f27a6abef8e91e4e55eaf58d2ad Mon Sep 17 00:00:00 2001 Subject: [PATCH 06/18] tracks the ratsnest and compactifies the power subsystem tracks the ratsnest and compactifies the power subsystem Checkpoint after fixes but before shrinking boards Checkpoint after re-centering sliders, before removing redundant LED resistors next to transistors to save on panel wires Move LED resistors next to transistors to save on panel wires fewer_panel_wires Latest commits for file Schematics/LUTHERS_VCO.diy Update luther's layout