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Lattice caBGA-756, ECP5 FPGAs, 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 version Alternative: CV from something else VCF MK's Diode Ladder VCF Kassutronic's KS-20 VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules Envelope/Envelope.kicad_pcb | 2 | 1N5817 | Schottky diode | | | | C1 | 1 | LED | Light emitting diode, 5 mm | | | | | | 1 | SW_SPDT | Switch, single pole normally-open tactile switch SPST LED OFF-ON lamp D Single Pole Single Throw (SPST) switch, temperature dependent K temerature switch dual double-pole single-throw OFF-ON D Single Pole Single Throw (SPST) switch with Signal Lamp, generic K switch normally-closed pushbutton push-button Side push button (https://www.alps.com/prod/info/E/PDF/Tact/SurfaceMount/SKRT/SKRT.pdf push horizontal SPST 1P1T tactile switch SPST LED OFF-ON lamp D Single Pole Single Throw (SPST) switch with Signal Lamp, generic K switch dp3t ON-ON-ON D Switch, three position, single pole normally-open tactile switch with 12 positions D 3.

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