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Microcontroller and smoothed PWM https://kassu2000.blogspot.com/2019/10/quantizer.html using a microcontroller but no DAC. Also interesting UI, featuring lit pushbuttons in a ring arrangement; a challenging PCB and/or print job! See PDF at https://raw.githubusercontent.com/kassu/kassutronics/master/documentation/Quantizer/Quantizer_Build_Docs_1.1A.pdf for explanation about PWM smoothing; essentially a 4-stage RC network but with an eye towards doing it all in one module with inputs made for an e-drum kit. 0 0 Y N 1 F N DEF SW_Push_Open_Dual SW 0 0 All-in-one module with inputs made for an e-drum kit. 0 0 N N 1 F N **UI:** -2 5mm LEDs -Consider: 1 simple on/off switch/button/knob/etc. PSU/Synth Mages Power Word Stun.kicad_sch SD, SMD, reverse on-board, right-angle, push-pull (https://media.digikey.com/PDF/Data%20Sheets/Hirose%20PDFs/DM3D-SF.pdf 1.10mm Pitch microSD Card Connector, Surface Mount, ZIF, 33 Circuits (http://www.molex.com/pdm_docs/sd/5022503391_sd.pdf), generated with kicad-footprint-generator JST PH series connector, B10P-VH-B (http://www.jst-mfg.com/product/pdf/eng/eVH.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-132-02-xxx-DV-BE, 32 Pins (http://www.molex.com/pdm_docs/sd/5024301410_sd.pdf), generated with kicad-footprint-generator Molex Pico-Clasp series connector, B3B-PH-K (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator Molex Molex 1.00mm Pitch Easy-On Type.

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