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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 ~$8 in parts, depending on PCB with exploratory 8hp layout Schematics/Enlarge/Enlarge.kicad_prl | 77 Synth Mages Power Word Stun.kicad_pro 555 lines }, "silk_line_width": 0.15, "silk_text_italic": false, "silk_text_size_h": 1.0, "silk_text_size_v": 1.0, PCB initial layout, no traces a3181ad06b Add correct footprints to fireball Minor layout tweaks Minor layout tweaks From cd915e24c94d463c67b0b011c09a1ed6f99bb0bf Mon Sep 17 00:00:00 2001 Subject: [PATCH] PCB initial layout, no traces PCB initial layout, no traces "silk_text_size_h": 1.0, "silk_text_size_v": 1.0, "silk_text_thickness": 0.15, "silk_text_upright": false, "zones": { "min_clearance": 0.5 } }, updates to rev 2 beta f12031bb41 updates to rev 2 beta by adding +5V, and both trigger/gate and CV lines? **UI:** - 3 5mm LEDs - one per step // 1 hp from side to center of package, Thorlabs photodiodes, https://www.thorlabs.de/drawings/374b6862eb3b5a04-9360B5F6-5056-2306-D912111C06C3F830/FDGA05-SpecSheet.pdf TO-92 leads molded, wide, drill 0.75mm (https://www.diodes.com/assets/Package-Files/TO92S%20(Type%20B).pdf TO-92 leads in-line, narrow, oval pads, drill 0.75mm (see NXP SSOP-TSSOP-VSO-REFLOW.pdf and sot337-1_po.pdf SSOP16: plastic shrink small outline package; 16 leads; body width 4.4 mm (see NXP sot054_po.pdf TO-126-2, Horizontal, RM 1.27mm, Multiwatt-7, staggered type-2 TO-220F-5, Vertical, RM 1.27mm, staggered type-2, see http://www.st.com/resource/en/datasheet/tda7391lv.pdf TO-220-11 Horizontal RM 1.7mm PentawattF- MultiwattF-5 TO-220F-5, Vertical, RM 10.9mm, see https://toshiba.semicon-storage.com/us/product/mosfet/to-247-4l.html TO-247-4 Horizontal RM 1.7mm PentawattF- MultiwattF-5 TO-220F-7, Vertical, RM 2.54mm.

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