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= knob_radius_top, h = engraved_indicator_depth * 2, $fn = knob_faces); // Create a hole with radius: ", hole_r , " at ", width_mm - thickness; // additives - labels, etc // one more to mount the circuit board to, dead center // pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // lower h-rib reinforcer ## Photos ### Photos ## 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 (http://www.china-bsun.com/Product48/1577.html 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 module CMS SOT223 4 pins for trigger, gate, and CV lines? **UI:** - 3 x switching (normalling) stereo jack B-gauge type (T/TN/R/RN/S/SN), https://www.neutrik.com/en/product/nj6tb-v M Series, 6.35mm (1/4in) jack receptacle, horizontal pcb mount, https://www.neutrik.com/en/product/nlj2md-v speakON Chassis Connectors, 4 pole chassis connector, nickel metal square G-size flange, self tapping screw holes (A-screw), vertical PCB mount, retention spring instead of latch, https://www.neutrik.com/en/product/nc3fahl-0 A Series, 5 pole female XLR receptacle, grounding: separate ground contact to mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3fav2 A Series, 5 pole female receptacle, grounding: mating connector shell and front panel, steel retention lug, lateral right PCB mount, asymmetric push, https://www.neutrik.com/en/product/ncj6fa-v-da Combo A series, 3 pole XLR female receptacle with 6.35mm (1/4in) jack receptacle, horizontal pcb mount, replaces NL2MD-V, https://www.neutrik.com/en/product/nl2mdxx-v speakON Chassis Connectors, 8 pole chassis connector, red D-size flange, countersunk thru holes, vertical PCB mount, https://www.neutrik.com/en/product/nc3mbh-1 B Series, 3.

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