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Back(operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on http://www.latticesemi.com/view_document?document_id=213 Lattice caBGA-756, 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 ## GitHub repository ## Git repository * [https://github.com/holmesrichards/precadsr](https://github.com/holmesrichards/precadsr) * [https://gitlab.com/rsholmes/precadsr](https://gitlab.com/rsholmes/precadsr This repo uses submodules aoKicad and Kosmo_panel directories. If desired, copy the source code. (This alternative is allowed only for noncommercial distribution and modification follow. GNU GENERAL PUBLIC LICENSE TERMS AND CONDITIONS APPENDIX: How to apply and the following conditions: The above copyright notice, * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following conditions: The above copyright notice and this permission notice shall be construed as You may add their own licenses; we recommend you read them, as their terms may differ from the ages 4675f71e05fc19d3608ee6e5061bbe79ae432fb7 panel(width); // waves out wall(h=4, w=width_mm-hole_dist_top-4); // one more vertical to mount the circuit board to, dead center v_wall(h=4, l=top_row-rail_clearance*2-thickness-15); // PCB holder main MK_VCO/Panels/Font files/futura medium condensed bt.ttf differ Binary files /dev/null and b/Panels/Font files/futura medium condensed bt.ttf Normal file Unescape Hardware/PCB/precadsr_Gerbers/precadsr-B_Paste.gbr Normal file Unescape Synth Mages Power Word Stun Panel.kicad_prl "filename": "Synth Mages Power Word Stun.kicad_prl 78 lines { "board": { More tweaks after pro review "different_unit_footprint": "error", "different_unit_net": "error", "duplicate_reference": "error", "duplicate_sheet_names": "error", More tweaks after pro review "design_settings": { "defaults": { PCB initial layout, no traces "copper_text_size_h": 1.5, "copper_text_size_v": 1.5, "copper_text_thickness": 0.3, PCB initial layout, no traces }, More tweaks after pro review "different_unit_footprint": "error", "different_unit_net": "error", "duplicate_reference": "error", "duplicate_sheet_names": "error", More tweaks after pro review "extra_units": "error", "global_label_dangling": "warning", "hier_label_mismatch": "error", "label_dangling": "error", "lib_symbol_issues": "warning", More tweaks after pro review More tweaks after pro review Apply jlcpcb's design rules, small fixes.
- Normal 0.615692 0.525858 0.586853 vertex.
- Switches, all 2pin: - Glide attenuator (B10k.
- -0.634852 0.77255 0.0113593 vertex -3.28327 -4.80177 21.335 vertex.
- HLE-123-02-xxx-DV-A, 23 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xxx-dv-xx-xx-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-dv-footprint.pdf.