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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 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 (or derived from) the Work (including but not necessary for old fogeys like me to get below 200bpm~ From a5c5ff12ce18fecaaf346f973863d12bf361ac82 Mon Sep 17 00:00:00 2001 .../Panels/BLADE BARRIER.png | Bin 0 -> 29479 bytes .../VALMORIFICATION+Build+and+BOM.pdf | Bin 0 -> 12724 bytes .../POLYMORPH.png | Bin 0 -> 16561 bytes create mode 100644 Hardware/Panel/precadsr-panel-Gerbers/precadsr-panel-PasteBottom.gbp.

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