X="4.3" y="1.3"/> <-- CV In main MK_VCO/Panels/fireball_vco_14hp_v1.scad 330 lines width = 24; // [1:1:84] width_mm = 70.8; // 14HP×5.08mm = 71.12; ES for 14HP is 70.8 c_tune = [width_mm/2 - h_margin, top_row, 0]; left_rib_x = thickness + 9.5/2 + tolerance*2; // rib + half a jack col_right = width_mm - thickness*2; // pcb_holder(h=10, l=top_row-rail_clearance*2-15-thickness, th=1.15, wall_thickness=1); // lower h-rib reinforcer ## Photos [to be added] ## Documentation: * [Schematic](Docs/precadsr.pdf) * PCB layout: [front](Docs/precadsr_layout_front.pdf), [back](Docs/precadsr_layout_back.pdf * [How to use](Docs/use.md 96f746fa2d Final tweaks, version submitted to JLCPCB on 20240124 v1.0 Add CV in implement a DC offset via non-inverting op-amp. - A notable issue with this design is the two clockwise-most pins, looking from below. Clock rate goes down when resistance goes up, opposite to expectation. C1 is too small for a single 0.5 mm² wires, reinforced insulation, conductor diameter 0.9mm, outer diameter 2mm, outer diameter 3.9mm, size source Multi-Contact FLEXI-xV 1.5 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 6 times 1.5 mm² wires, basic insulation, conductor diameter 0.48mm, outer diameter 1mm, size source Multi-Contact FLEXI-xV 2.0 (https://ec.staubli.com/AcroFiles/Catalogues/TM_Cab-Main-11014119_(en)_hi.pdf), bend radius 3 times outer diameter, generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-103-02-xxx-DV, 3 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator Fuse SMD 0402 (1005 Metric), square (rectangular) end terminal, IPC_7351 nominal with elongated pad for handsoldering. (Body size source: http://www.tortai-tech.com/upload/download/2011102023233369053.pdf), generated with kicad-footprint-generator Harwin Female Vertical Surface Mount LED Lamp (https://www.kingbright.com/attachments/file/psearch/000/00/00/KPBD-3224SURKCGKC(Ver.20A).pdf Kingbright dual LED KPBD-3224 LiteOn RGB LED; https://optoelectronics.liteon.com/upload/download/DS22-2008-0044/LTST-C19HE1WT.pdf LED RGB Chip SMD LED SMD 0402 (1005 Metric), square (rectangular) end terminal, IPC_7351 nominal, (Body size from: http://www.kemet.com/Lists/ProductCatalog/Attachments/253/KEM_TC101_STD.pdf), generated with kicad-footprint-generator Molex CLIK-Mate series connector, BM12B-ZESS-TBT (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator JST VH series connector.