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Power - MK uses a CA3080 OTA, an expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules Latest commits for file Synth Mages Power Word Stun.kicad_pro PSU \+12V, -12V and ground needed, probably up to 1amp - maybe not as big as the default. // Minimum size of 8 voltages controllable by individual knobs. MK's 5-step sequencer, expanded to 8 (or 10?) Bergman's 10-step sequencer (up to 10) https://www.eddybergman.com/2022/04/8-step-sequencer-v2.html very similar core to MK's, but using fewer diodes (substituting LEDs in sliders, lit for each stage? Latest commits for file Panels/FireballSpell.png Add panels Panels/FireballSpell.png | Bin 0 -> 1303306 bytes Panels/FireballSpellVertSmall.png | Bin 0 -> 12724 bytes .../Panels/POLYMORPH.png | Bin 0 -> 16369 bytes main MK_VCO/Schematics/MK_VCO_RADIO_SHAEK.diy 5515 lines 2bd01a1ff2 Add schematic, start on PCB sandwich, making some final-ish decisions about connecting to front panel to PSU PCB (will affect choice of sitching hardware). Consider aesthetics and prcticality of stand-offs from front panel. Current design uses six IDC 2×8 connectors with 4 unused pins if supplying power, but not that small - C3 and C4 could use fewer caps that way Latest commits for file Panels/title_test_36.stl Latest commits for file Panels/fireball_vco_14hp_v1.scad adds front panel to integer pseudo-origin, remove.

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