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Footprints whenever possible; some fabs charge more for ovals 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-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, FlatTop, diameter 5.0mm, 2 pins, http://www.kingbright.com/attachments/file/psearch/000/00/00/L-43GD(Ver.12B).pdf LED diameter 5.0mm 3 pins THT ceramic resonator filter CSTLSxxxG Ceramic Resomator/Filter 7.0x2.5mm^2, length*width=7.0x2.5mm^2 package, package length=8.0mm, package width=3.0mm, 3 pins LED Round FlatTop diameter 5.0mm 2 pins grey LED, diameter 10.0mm, 2 pins, http://cdn-reichelt.de/documents/datenblatt/A500/LL-504BC2E-009.pdf LED diameter 3.0mm 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 LED, diameter 5.0mm z-position of LED center 1.0mm, 2 pins, pitch 7.5mm, size 22.5x11mm^2, drill diamater 1.2mm, pad diameter 2.5mm, see http://cdn-reichelt.de/documents/datenblatt/C151/RND_205-00056_DB_EN.pdf, script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block RND 205-00291 pitch 5.08mm length 9.52mm diameter 5.33mm Diode, DO-34_SOD68 series, Axial, Horizontal, pin pitch=10.16mm, , length*diameter=8.9*3.7mm^2, , http://www.diodes.com/_files/packages/8686949.gif Diode 5KP series Axial Horizontal pin pitch 37.50mm length 41.5mm width 13mm Capacitor C, Radial series, Radial, pin pitch=5.00mm, 3W, length*width=12.0*8.0mm^2, http://www.vishay.com/docs/30218/cpcx.pdf Resistor Radial_Power series Radial pin pitch 20mm length 17mm diameter 6mm Electrolytic Capacitor CP, Radial series, Radial, pin pitch=5.00mm, , length*width=8*8mm^2, Neosid, NE-CPB-07E, http://www.neosid.de/produktblaetter/neosid_Festinduktivitaet_NE_CPB07E.pdf Inductor Radial series Radial pin pitch 10.16mm length 5.2mm diameter 2.7mm Vishay IM-2 Inductor, Axial series, Axial, Horizontal, pin pitch=10.16mm, , length*diameter=7*3.3mm^2, Fastron, MICC, http://www.fastrongroup.com/image-show/70/MICC.pdf?type=Complete-DataSheet&productType=series Inductor Axial series Axial Horizontal pin pitch 7.50mm diameter 10mm Electrolytic Capacitor CP, Axial series, Axial, Horizontal, pin pitch=32mm, , length*diameter=23.37*12.7mm^2, Vishay, IHA-203, http://www.vishay.com/docs/34014/iha.pdf Inductor Axial series Axial Horizontal pin pitch 5.08mm 2W length 17mm diameter 7.0mm Tantal Electrolytic Capacitor, , http://www.vishay.com/docs/42037/53d.pdf CP Axial series Axial Horizontal pin pitch 7.62mm length 3.04mm diameter 1.6mm Diode, DO-34_SOD68 series, Axial, Vertical, pin pitch=7.62mm, , length*diameter=12*5mm^2, Fastron, MISC, http://cdn-reichelt.de/documents/datenblatt/B400/DS_MISC.pdf Inductor Axial series Axial Horizontal pin pitch 5.00mm diameter 7.0mm Tantal Electrolytic Capacitor CP, Axial series, Axial, Horizontal, pin pitch=20.32mm, 0.5W = 1/2W length 9mm diameter 3.2mm Resistor, Axial_DIN0309 series, Axial, Horizontal, pin pitch=100mm, , length*diameter=93*23.0mm^2, Electrolytic Capacitor, , http://www.vishay.com/docs/42037/53d.pdf CP Axial series Axial Horizontal pin pitch 10.16mm length 26.67mm diameter 13.97mm Vishay IHA-104 Inductor, Axial series, Axial, Horizontal, pin pitch=15.24mm, , diameter=21mm, http://www.abracon.com/Magnetics/radial/AIRD02.pdf Inductor Radial series Radial pin pitch 12.7mm length 3.2mm diameter 2.6mm Diode, T-1 series, Axial, Vertical, pin pitch=5.08mm, 0.5W = 1/2W length 9mm diameter 5.3mm Diode, DO-201AE series, Axial, Vertical, pin pitch=10.16mm, , length*diameter=3.2*2.6mm^2, , http://www.diodes.com/_files/packages/T-1.pdf Diode T-1 series Axial Vertical pin pitch 38.1mm 7W length 38mm width.

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