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Sheet ## Photos ### Photos ## Documentation: ### Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf) * [BOM](Docs/precadsr_bom.md) * [Build notes](Docs/build.md) How to use the 4 pins (http://www.qingpu-electronics.com/en/products/WQP-PJ320E-177.html PJ31060-I 6pin SMD 3.5mm headphones jack plug stereo 3.5mm PJ311 Headphones with microphone connector, 3.5mm, 4 pins (http://www.qingpu-electronics.com/en/products/WQP-PJ320D-72.html 3.5mm jack mic microphone phones headphones 4pins audio plug Headphones with microphone connector, 3.5mm, 4 pins RGB RGBLED LED, Round, Rectangular size 5.0x2.0mm^2 z-position of LED center 3.0mm, 2 pins, diameter 1.8mm size 1.8x2.4mm^2 z-position of LED center 3.0mm, 2 pins, pitch 5mm, size 50x7.6mm^2, drill diamater 1.3mm, pad diameter 3mm, see , script-generated with , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix MKDS-1,5-3 pitch 5mm size 20x10mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00291, 6 pins, pitch 5mm, size 25x9mm^2, drill diamater 1.3mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/2138224.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_WAGO THT Terminal Block Phoenix PTSM-0,5-8-2.5-H-THR pitch 2.5mm size 15.5x5mm^2 drill 1.2mm pad 3mm Terminal Block Phoenix MKDS-1,5-2, 2 pins, diameter 5.0mm z-position of LED center 2.0mm, 2 pins LED diameter 3.0mm z-position of LED center 2.0mm, 2 pins, http://cdn-reichelt.de/documents/datenblatt/A500/LED15MMGE_LED15MMGN%23KIN.pdf LED_SideEmitter_Rectangular Rectangular SideEmitter Rectangular size 5.0x5.0mm^2 2 pins diameter 5.0mm z-position of LED center 3.0mm 2 pins THT ceramic resonator filter filter SMD Resomator/Filter 7.2x3.0mm, Murata CSTCC8M00G53-R0; 8MHz resonator, SMD, Farnell (Element 14) #1170435, http://www.farnell.com/datasheets/19296.pdf?_ga=1.247244932.122297557.1475167906, hand-soldering, 7.2x3.0mm^2 package SMD Crystal Seiko Epson SG-8002JC https://support.epson.biz/td/api/doc_check.php?mode=dl⟨=en&Parts=SG-8002DC, 10.5x5.0mm^2 package SMD Crystal EuroQuartz MQ series http://cdn-reichelt.de/documents/datenblatt/B400/MQ.pdf, 7.0x5.0mm^2 package SMD Crystal MicroCrystal CC7V-T1A/CM7V-T1A series https://www.microcrystal.com/fileadmin/Media/Products/32kHz/Datasheet/CC7V-T1A.pdf, 3.2x1.5mm^2 package SMD Crystal MicroCrystal CC4V-T1A series http://cdn-reichelt.de/documents/datenblatt/B400/CC4V-T1A.pdf, 5.0x1.9mm^2 package SMD Crystal Oscillator Seiko Epson MC-406 https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-306_en.pdf, 9.6x4.1mm^2 package SMD Resomator/Filter Murata SFECV, http://cdn-reichelt.de/documents/datenblatt/B400/SFECV-107.pdf, 6.9x2.9mm^2 package SMD Crystal Seiko Epson MC-306 https://support.epson.biz/td/api/doc_check.php?dl=brief_MC-306_en.pdf, 8.0x3.2mm^2.

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