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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 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 VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules Envelope/Envelope.kicad_pcb | 2 pin Molex header 2.54 mm spacing | | | | Q1, Q2, Q3 | 3 | 22k | Resistor | | R20, R22 | 3 | 4.7k | Resistor | | Tayda | A-001 | | | | Q1, Q2, Q3 | 3 | A1M | **Potentiometer, 16 mm vertical board mount module ACDC-Converter, 3W, Meanwell, IRM-02, THT, https://www.meanwell.co.uk/media/productPDF/IRM-02-spec.pdf ACDC-Converter, 3W, Meanwell, IRM-03, THT, https://www.meanwell.com/Upload/PDF/IRM-03/IRM-03-SPEC.PDF ACDC-Converter 5W THT HiLink board mount | | | S1 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TSSOP-8/VSSOP-8 Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling) | | | | | J10 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TO-99-8 | | | U2 | 1 | TL074 | Quad Low-Noise JFET-Input Operational Amplifiers, DIP-8/SOIC-8/TO-99-8 | | | | Tayda | A-962 | | Tayda | A-4349 | | J3, J4, J5 | 3 pin Molex connector 2.54 mm spacing | Tayda | A-4349 | | | | 2 | 1N5817 | Schottky diode | | Knobs | | R1, R10, R11 | 3 | 10uF | Polarized capacitor | | Tayda | A-804 | | | 14 pin DIP socket | | | C1, C11 | 2 | 1M | Resistor | | | J6, J10, J11 | 3 | 10uF | Polarized capacitor | | U2 | 1 | AudioJack2_SwitchT | Audio Jack, 2 Poles (Mono / TS), Switched T Pole (Normalling) | | R5 | 2 From 5082711a9800483ca58d4b1dffec55bdf27856b9 Mon Sep 17 00:00:00 2001 Subject: [PATCH] checkpoint before trying to implement chaining Schematics/Unseen Servant/Unseen Servant.kicad_dru Normal file Unescape Schematics/SynthMages.pretty/C_Rect_L22.0mm_W6.1mm_P20mm_MKT_BIG_RED_CAP.kicad_mod Normal file Unescape Schematics/Unseen Servant/Unseen Servant Front Panel v2.kicad_pcb Normal file Unescape Schematics/SynthMages.pretty/SOCKET_3_PIN_HEADER_NORMAL.kicad_mod Normal file Unescape working_height = height - v_margin - title_font; saw_out = [h_margin + working_width/4, row_1, 0]; f_tune = [second_col, fifth_row, 0]; square_out = [output_column, row_2, 0]; pwm_in = [first_col, fifth_row, 0]; pwm_duty = [second_col, fifth_row.

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