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In one module with lots of analog drum voices; based heavily on Moritz Klein's work, but with buffering between (some) stages. Needs a TLC7524/AD7524 (a simple DAC that's still sorta analog) and a switch module label(string, size=4, halign="center", font=default_label_font) { color([1,0,0]) linear_extrude(thickness+1) text(string, size, halign=halign, font=font); } module external_direction_indicator() { if(pointy_external_indicator == true } } Notes: - Before producing, confirm footprint dimensions for capacitors, diodes (inc. LEDs), and barrel power jack works physically for male connector from wall wart. - Consider adding a switch to disable the clock, and a switch of some sort to the fab Precision ADSR build notes | C7, C12, C13 | 3 | 2N3904 | 0.2A Ic, 40V Vce, Small Signal NPN Transistor, TO-92 R16, R17, R19, R20 | 4 | 100nF | Unpolarized capacitor | | | | | R5, R29 | 3 | 4.7k | Resistor | | | | | | J10 | 1 | SW_SPDT | Switch, single pole double throw, separate symbols K switch SPST right angle, stacked (https://www.molex.com/content/dam/molex/molex-dot-com/products/automated/en-us/salesdrawingpdf/484/48406/484060001_sd.pdf USB 3.0 type A right angle Würth USB-A two stacked horizontal through-hole USB_B USB B receptable with flange, https://cdn.amphenol-icc.com/media/wysiwyg/files/drawing/10118193.pdf USB Micro-B horizontal SMD GCT Micro USB Type C, Right Angle, Surface Mount, Push-Pull Type, 1.42mm Height, with Detect Switch JST ACH series connector, DF52-10S-0.8H (https://www.hirose.com/product/en/products/DF52/DF52-3S-0.8H%2821%29/), generated with kicad-footprint-generator Molex SlimStack Fine-Pitch SMT Board-to-Board Connectors, 54722-0504, 50 Pins per row (http://www.te.com/commerce/DocumentDelivery/DDEController?Action=srchrtrv&DocNm=82181_SOFTSHELL_HIGH_DENSITY&DocType=CS&DocLang=EN), generated with kicad-footprint-generator ipc_noLead_generator.py Nexperia wafer level chip-size package; 15 bumps (6-3-6), 2.37x1.17mm, 15 Ball, 6x3 Layout, 0.4mm Pitch, https://pdfserv.maximintegrated.com/package_dwgs/21-100302.PDF, https://pdfserv.maximintegrated.com/package_dwgs/21-100302.PDF NXP VFBGA-42, 3.0x2.6mm, 42 Ball, 6x7 Layout, 0.4mm Pitch, https://pdfserv.maximintegrated.com/package_dwgs/21-100168.PDF XBGA-121, 11x11 raster, 10x10mm package, pitch 0.4mm; http://ww1.microchip.com/downloads/en/devicedoc/atmel-8235-8-bit-avr-microcontroller-attiny20_datasheet.pdf#page=208 WLCSP-16, 1.409x1.409mm, 16 Ball, 4x4 Layout, 0.35mm Pitch, https://www.st.com/resource/en/datasheet/stm32h747xi.pdf DFN, 6 Pin (https://www.silabs.com/documents/public/data-sheets/Si7020-A20.pdf), generated with kicad-footprint-generator Harwin Male Horizontal Surface Mount Single Row 2.54mm (0.1 inch) Pitch PCB Connector, M20-7810445, 4 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf), generated with kicad-footprint-generator.

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