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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 arduino nano clone (atmega 328p), 12-bit dac (mcp4726) and small amounts of supporting hardware Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a gate. Main synth_tools/Schematics/SynthMages.pretty/6.3mm_NPTH_MAXJLCPCB.kicad_mod 24 lines Binary files /dev/null and b/Images/capsocket.png differ // The number of pins: 02; pin pitch: 5.08mm; Angled || order number: 1924376 16A (HC Generic Phoenix Contact connector footprint for: GMSTBV_2,5/10-GF-7,62; number of pins: 07; pin pitch: 5.08mm; Vertical; threaded flange || order number: 1924570 16A (HC Generic Phoenix Contact connector footprint for: MSTBVA_2,5/14-G-5,08; number of pins: 04; pin pitch: 5.00mm; Angled || order number: 1827868 8A 160V Generic Phoenix Contact connector footprint for: MCV_1,5/13-GF-3.5; number of pins: 09; pin pitch: 5.00mm; Angled; threaded flange || order number: 1827936 8A 160V Generic Phoenix Contact connector footprint for: GMSTB_2,5/2-GF-7,62; number of pins: 09; pin pitch: 3.81mm; Angled; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1755626 12A Generic Phoenix Contact connector footprint for: MC_1,5/10-GF-5.08; number of pins: 10; pin pitch: 7.62mm; Vertical; threaded flange; footprint includes mount hole for the Adafruit Feather WICED Wifi board, https://learn.adafruit.com/introducing-the-adafruit-wiced-feather-wifi Adafruit Feather 32u4 FONA board, https://learn.adafruit.com/adafruit-feather-32u4-fona Adafruit Feather WICED Wifi board, https://learn.adafruit.com/introducing-the-adafruit-wiced-feather-wifi Adafruit Feather series of boards, https://learn.adafruit.com/adafruit-feather/feather-specification Footprint for Mini-Circuits case QQQ130 (https://ww2.minicircuits.com/case_style/QQQ130.pdf Footprint for Mini-Circuits case BK377 (https://ww2.minicircuits.com/case_style/BK276.pdf Footprint for the setscrew (in mm). If dome cap is selected, it is safe to put the output jacks Latest commits for file Schematics/MK_VCO_RADIO_SHAEK_W_PARTS.diy main MK_VCO/Panels/Font files/futura medium bt.ttf // 13 SPDT switches: // 1 for run/stop (sw14) // 1 rotary switch, 5+ positions 10 LEDs - one per step // 1 for once/cont (sw15 // pause (j18/j19 // run/stop (switch // once/continuous (switch // cv switch.

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