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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 attenuator, intended for use as tremolo - Manual offset knob From aa199fc6f4983bb3329ebb61d633face7f24ca94 Mon Sep 17 00:00:00 2001 Subject: [PATCH] Fix getting a bunch of diodes and support Kassutronic's KS-20 VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules schematic start, and some supporting components. ~$6 in parts, needing only one side when convenient. You can even use a non-metal spacer underneath alpha pots: barely enough to attach knob Schematics/SynthMages.pretty/Alpha Rotary 12.kicad_mod 46 lines Latest commits for file Schematics/SynthMages.pretty/PinSocket_1x02_P2.54mm_Vertical.kicad_mod Latest commits for file Schematics/circuit.pdf main synth_tools/RadioShaek2Board.diy 5515 lines 2bd01a1ff2 Add schematic, start on PCB with exploratory 8hp layout 2x Sockets, all three pins need wires: - clk in - glide in (sleeve and normal both GND Glide attenuator (B10k) (join two left pins from below - Clock rate (B100k) (not sure yet which 2 pins LED Round FlatTop Rectangular size 4.5x1.6mm^2, 2 pins, http://cdn-reichelt.de/documents/datenblatt/A500/LED10-4500RT%23KIN.pdf LED diameter 3.0mm z-position of LED center 2.0mm 2 pins LED, diameter 3.0mm, 2 pins, diameter 3.0mm z-position of LED center 3.0mm 2 pins LED, diameter 5.0mm, 2 pins, http://www.kingbright.com/attachments/file/psearch/000/00/00/L-483GDT(Ver.15B).pdf LED Round FlatTop diameter 5.0mm 2 pins LED diameter 3.0mm z-position of LED center 3.0mm 2 pins LED diameter 1.8mm size 1.8x2.4mm^2 z-position of LED center 2.0mm, 2 pins diameter 3.0mm z-position of LED center 1.6mm 2 pins diameter 3.0mm z-position of LED center 1.6mm 2 pins diameter 5.0mm 3 pins THT ceramic resonator filter SMD Resomator/Filter Murata CSTLSxxxG, http://www.murata.com/~/media/webrenewal/support/library/catalog/products/timingdevice/ceralock/p17e.ashx, length*width=8.0x3.0mm^2 package, package length=7.0mm, package width=2.5mm, 3 pins THT ceramic resonator filter filter hand-soldering SMD Resomator/Filter Murata SFECV, http://cdn-reichelt.de/documents/datenblatt/B400/SFECV-107.pdf, 6.9x2.9mm^2 package SMD Crystal TXC 7M http://www.txccrystal.com/images/pdf/7m-accuracy.pdf, 3.2x2.5mm^2 package Miniature Crystal Clock Oscillator TG2520 series SMD inductor Ferrite Bead Array 4x0603, Taiyo Yuden NRF51822 Module Bluetooth https://www.yuden.co.jp/wireless_module/document/datareport2/en/TY_BLE_EYSGJNZ_DataReport_V1_9_20180530E.pdf Taiyo Yuden NRF51822 Module Bluetooth https://www.yuden.co.jp/wireless_module/document/datareport2/en/TY_BLE_EYSGJNZ_DataReport_V1_9_20180530E.pdf Taiyo Yuden BK Series (see https://www.yuden.co.jp/productdata/catalog/mlci09_e.pdf Inductor, Walsin, WLFM201609x, 2.0x1.6x0.9mm, http://www.passivecomponent.com/wp-content/uploads/inductor/WLFM_C_series.pdf Inductor, Walsin, WLFM252009x, 2.5x2.0x0.9mm, http://www.passivecomponent.com/wp-content/uploads/inductor/WLFM_C_series.pdf Inductor, Walsin, WLFM252009x, 2.5x2.0x0.9mm, http://www.passivecomponent.com/wp-content/uploads/inductor/WLFM_C_series.pdf Inductor, Wuerth, WE-XHMI 8080, 8.3mmx8.8mm (Script generated with kicad-footprint-generator JST PH series connector.

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