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PCB? // cube([137.5, 97, 1], center=true); working_increment = working_height / (8+tolerance/3); // generally-useful spacing amount for vertical columns of stuff working_height = height - v_margin*2 - title_font_size; working_increment = (working_height-v_margin+thickness) / (9); // generally-useful spacing amount for vertical columns of stuff col_left = h_margin; col_right = width_mm - right_rib_thickness; // projection: make a 2d version // ribs - reinforcements and barriers against shorts on the https://www.onsemi.com/pub/Collateral/NCP115-D.PDF Panasonic HQFN-16, 4x4x0.85mm (https://industrial.panasonic.com/content/data/SC/ds/ds7/c0/PKG_HQFN016-A-0404XZL_EN.pdf Panasonic HSON-8, 8x8x1.25mm (https://industrial.panasonic.com/content/data/SC/ds/ds7/c0/PKG_HSON008-A-0808XXI_EN.pdf QFN, 12 Pin (https://ww1.microchip.com/downloads/aemDocuments/documents/APID/ProductDocuments/DataSheets/MIC2207-2MHz-3A-PWM-Buck-Regulator-DS20006470A.pdf#page=22), generated with kicad-footprint-generator Connector Phoenix Contact connector footprint for: MCV_1,5/7-GF-5.08; number of pins: 16; pin pitch: 3.81mm; Vertical || order number: 1777112 12A || order number: 1776809 12A Generic Phoenix Contact SPT 5/7-H-7.5-ZB Terminal Block, 1719189 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1719189), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam.

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