synth_tools

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Tstamp 1c9c2c29-57db-4a4e-bbff-29f893ea0430) Final revision; added custom DRC as project file version 1) #Kicad 7 # 2-layer, 1oz copper condition "A.Type == 'track' && B.Type == 'track'" (condition "A.Type == 'pad' && A.Fabrication_Property == 'Castellated pad'" condition "A.Net != B.Net" (condition "A.Pad_Type == 'NPTH, mechanical' && B.Type == 'track'" (condition "A.Type == 'track' && B.Layer == 'Edge.Cuts'" condition "A.Type == 'track' && B.Type == 'track'" main MK_VCO/Panels/luther_triangle_10hp.scad 359 lines width = 10; knob_smoothness = 20; // tweak on this and/or Hagiwo's quantizer, if going digital ** https://note.com/solder_state/n/nde97a0516f03 and https://www.youtube.com/watch?v=op_DhPr2goc ** 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 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 WiFi, https://www.adafruit.com/product/2471 Arduino UNO R3, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf 8devices Carambola2, OpenWRT, industrial SoM computer, https://www.8devices.com/media/products/carambola2/downloads/carambola2-datasheet.pdf Pololu Breakout 16-pin 15.2x20.3mm 0.6x0.8\ Raspberry Pi Zero using through hole M3, height 9, Wuerth electronics 9774080951 (https://katalog.we-online.de/em/datasheet/9774080951.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py 44-Lead Plastic Shrink Small Outline (SO), see https://docs.broadcom.com/cs/Satellite?blobcol=urldata&blobheader=application%2Fpdf&blobheadername1=Content-Disposition&blobheadername2=Content-Type&blobheadername3=MDT-Type&blobheadervalue1=attachment%3Bfilename%3DIPD-Selection-Guide_AV00-0254EN_030617.pdf&blobheadervalue2=application%2Fx-download&blobheadervalue3=abinary%253B%2Bcharset%253DUTF-8&blobkey=id&blobnocache=true&blobtable=MungoBlobs&blobwhere=1430884105675&ssbinary=true SO, 8 Pin (https://www.qorvo.com/products/d/da001879), generated with kicad-footprint-generator JST XA series connector, B20B-PUDSS (http://www.jst-mfg.com/product/pdf/eng/ePUD.pdf), generated with kicad-footprint-generator Hirose DF13 through hole, DF13-08P-1.25DSA, 8 Pins (https://www.molex.com/pdm_docs/sd/026605050_sd.pdf), generated with kicad-footprint-generator Diode SMD 0805 (2012 Metric), square (rectangular) end terminal, IPC_7351.

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