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An expensive and rare chip these days ($3/ea on amazon, maybe fakes) VCA MK's VCA Probably a straightforward build: one op-amp, four transistors and some example modules Latest commits for file Docs/precadsr_layout_back.pdf rm old format files Removed submodules aoKicad, Kosmo_panel .gitmodules | 6 Kosmo_panel | 2 Internal clock with manual control. Clock in socket with 80 contacts AT ISA 16 bits Bus Edge Connector x1 http://www.ritrontek.com/uploadfile/2016/1026/20161026105231124.pdf#page=70 Highspeed card edge connector for 1.6mm PCB's with 05 contacts (not polarized Highspeed card edge connector for 1.6mm PCB's with 40 contacts (not polarized Highspeed card edge connector for PCB's with 50 contacts (polarized Highspeed card edge connector for 2.4mm PCB's with 08 contacts (not polarized Highspeed card edge card connector socket for 1.57mm PCBs, vertical, alignment pins (source: https://suddendocs.samtec.com/prints/hsec8-1xxx-xx-xx-dv-x-xx-footprint.pdf 0.8 mm BGA-64, 10x10 raster, 4.201x4.663mm package, pitch 0.5mm; 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; 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, 0.5mm Pitch, https://www.st.com/resource/en/datasheet/stm32mp151a.pdf ST UFBGA-73, 5.0x5.0mm, 73 Ball, 9x9 Layout, 0.4mm Pitch, https://www.st.com/resource/en/datasheet/stm32wb55vc.pdf Texas Instruments DSBGA BGA YZR0009 Texas Instruments, QFM MOF0009A, 6x8x2mm (http://www.ti.com/lit/ml/mpsi063a/mpsi063a.pdf QFN, 41 Pin (http://www.ti.com/lit/ml/mpqf506/mpqf506.pdf QFN, 28 Pin (JEDEC MO-153 Var HB https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator JST J2100 vertical JST VH series connector, S10B-XASK-1N-BN (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, LY20-24P-DT1, 12 Circuits (https://www.molex.com/pdm_docs/sd/2005280120_sd.pdf), generated with kicad-footprint-generator Molex Pico-Clasp series connector, BM13B-ZESS-TBT (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Mounting.

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