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ECP5 FPGAs, based on either internal or external clock signal, start/stop, manual step (featuring debouncing!), sequencer cascading, basic glide (for portamento), attack decay sustain release envelope generator synth module. Layout and panel are Kosmo format. * [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 your choice of sitching hardware). Consider aesthetics and prcticality of stand-offs from front panel. This leaves a gap between the hub and circumference. * @todo Make the top_rounding() module. * @todo Refactor the top_rounding() module. * @todo Adjust $fn based on SIP7, http://power.murata.com/data/power/ncl/kdc_nma.pdf Isolated 1W or 2W Single and Dual Output, 1500VDC Isolation, 19.0x17.0x8.7mm https://www.xppower.com/Portals/0/pdfs/SF_ISU02.pdf DCDC SMD TRACO TMR-1SM DCDC-Converter TRACO THN 10 to 30W, Single or dual Output, (https://www.tracopower.com/sites/default/files/products/datasheets/thn30_datasheet.pdf DCDC-Converter TRACO TMRxxxx Single/Dual_output DCDC-Converter, TRACO, TMR 1-xxxx, Single output, Rev. March 21.2016 DCDC-Converter TRACO THN30 Generic muRata MEJ1DxxxxSC, 19.5x9.8x12.5mm, 5.2kVDC Isolated, 1W, single output, http://www.cincon.com/upload/media/data%20sheets/Data%20Sheet%20(DC)/C%20CASE/SPEC-EC6C-V12.pdf DCDC-Converter CINCON EC6Cxx single output POE DCDC-Converter, 60W POE, Silvertel, pitch 2.54mm, size 13.16x6.5mm^2, drill diamater 1.2mm, pad diameter 3mm, see , script-generated with , script-generated with , script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block Metz Connect Type701_RT11L02HGLU pitch 6.35mm size 19x12.5mm^2 drill 1.3mm pad 2.6mm Terminal Block Phoenix MPT-0,5-3-2.54 pitch 2.54mm size 20.8x6.2mm^2 drill 1.1mm pad 2.1mm terminal block RND 205-00030 pitch 10mm size 75x9mm^2 drill 1.3mm pad 2.5mm terminal block RND 205-00085, 9 pins, pitch 5.08mm, size 20.3x8.45mm^2, drill diamater 1.3mm, pad diameter 2.6mm, see http://www.farnell.com/datasheets/100425.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_Phoenix THT Terminal Block WAGO 236-305 45Degree pitch 7.5mm Varistor, diameter 21.5mm, width 6.3mm, pitch 7.5mm size 54.8x14mm^2 drill 1.15mm pad 3mm Terminal Block WAGO 236-601, 45Degree (cable under 45degree), 12 pins, pitch 5.08mm, size 50.8x11.2mm^2, drill diamater 1.3mm, pad diameter 2.1mm, 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 ipc_noLead_generator.py QFN, 64 Pin (https://www.silabs.com/documents/public/data-sheets/Si5345-44-42-D-DataSheet.pdf#page=51), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-112-02-xxx-DV-BE, 12 Pins (http://www.molex.com/pdm_docs/sd/908140004_sd.pdf), generated with kicad-footprint-generator Molex PicoBlade Connector System, 43045-2021 (alternative finishes: 43045-180x), 9 Pins (http://www.molex.com/pdm_docs/sd/559320530_sd.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP, 36 Pin (http://ww1.microchip.com/downloads/en/DeviceDoc/36L_QFN_6x6_with_3_7x3_7_EP_Punch_Dimpled_4E_C04-0241A.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py QFN, 24 Pin (http://www.ti.com/lit/ds/symlink/msp430fr5720.pdf#page=108), generated with kicad-footprint-generator JST SH side entry Molex Micro-Fit 3.0 Connector System, 43045-2221 (alternative finishes: 43045-080x), 4 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator Molex Molex 0.30mm Pitch Easy-On BackFlip, Right-Angle, Bottom Contact FFC/FPC, 200528-0100, 10 Circuits (http://www.jae.com/z-en/pdf_download_exec.cfm?param=SJ103130.pdf), generated with kicad-footprint-generator Molex Mini-Fit Jr. Power Connectors, old mpn/engineering number: 5569-18A1, example for new mpn: 39-30-0060, 3 Pins per row (http://www.molex.com/pdm_docs/sd/530480210_sd.pdf), generated with kicad-footprint-generator Resistor SMD 4020 (10251.

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