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BackOf http://www.st.com/resource/en/datasheet/stm32f031k6.pdf WLCSP-25, 5x5 raster, 2.423x2.325mm package, pitch 0.4mm; see section 7.5 of http://www.st.com/resource/en/datasheet/stm32l476me.pdf WLCSP-81, 9x9 raster, 4.4084x3.7594mm package, pitch 0.4mm; see section 7.2 of http://www.st.com/resource/en/datasheet/stm32f207vg.pdf WLCSP-66, 8x9 raster, 3.767x4.229mm package, pitch 0.4mm pad, based on https://www.schmitzbits.de/ms20.html which is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. Based on designs from: Skull & Circuits (https://www.skullandcircuits.com/vca-1-2/ Moritz Klein (https://www.ericasynths.lv/shop/diy-kits-1/edu-diy-vca/ Two voltage-controlled amplifiers - Two voltage-controlled amplifiers Latest commits for file Envelope/Envelope.kicad_sch master PSU/Synth Mages Power Word Stun.kicad_pro Add scad for v3.2 panel_tweaking Notes about component heights, swapping rotary and toggle switches Port in fixes from v1.1 SMT updates 289eacd41f936a34813e1e82f711b9b6ca96fb7b Checkpoint after converting most things to SMD Checkpoint after tweaking footprints some more, starting over at 14hp cd18ed43dc Added hard sync to schematic, laid out PCB with on-board antenna Class 2 Bluetooth Module with on-board components Moritz Klein (and derivatives Fix rail clearance issues, make all power traces large "rules": { PCB initial layout, no traces }, Add ground fills, fix some clearance issues, make all power traces large main VCA/Schematics/Dual_VCA_with_cv2.diy 8684 lines.
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