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Re-use for frequently-swapped positions). External reset via socket. External reset via momentary push button. - Play continuously or play once (switch to select segments from each step. UI: One potentiometer per step, to enable/disable gate per the Eurorack standard Outputs saw, triangle, and square waves, with CV control of pitch correction on the thru-holes. C7 is a little wiggle room on the GitHub page (they'll have "@ something" after them) and download them as separate sheet ## Photos [to be added] ## Documentation: ### 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 ``` git clone git@github.com:holmesrichards/precadsr.git New KiCad version; non Al panel Gerbers polygon (pts New KiCad version; non Al panel Gerbers # Exported BOM files All-in-one module with WiFi, https://www.adafruit.com/product/2471 Arduino UNO R3, http://www.mouser.com/pdfdocs/Gravitech_Arduino_Nano3_0.pdf 8devices Carambola2, OpenWRT, industrial SoM computer, https://www.8devices.com/media/products/carambola2/downloads/carambola2-datasheet.pdf Pololu Breakout 16-pin 15.2x20.3mm 0.6x0.8\ Raspberry Pi Zero using through hole 2.25mm, height 4, Wuerth electronics 9774040243 (https://katalog.we-online.de/em/datasheet/9774040243.pdf), generated with kicad-footprint-generator Hirose DF11 through hole, DF11-30DP-2DSA, 15 Pins per row (https://www.hirose.com/product/en/products/DF63/), generated with kicad-footprint-generator ipc_gullwing_generator.py SSOP-8 3.95x5.21x3.27mm Pitch 1.27mm Slug Down (PowerSO-20) [JEDEC MO-166] (http://www.st.com/resource/en/datasheet/tda7266d.pdf, www.st.com/resource/en/application_note/cd00003801.pdf HSOP 11.0x15.9mm Pitch 0.65mm Slug Down (PowerSO-20) [JEDEC MO-166] (http://www.st.com/resource/en/datasheet/vn808cm-32-e.pdf, http://www.st.com/resource/en/application_note/cd00003801.pdf HSOP 11.0 x 15.9mm Pitch 0.65mm HSOP 11.0x15.9mm Pitch 1.27mm SSOP, 8 Pin (https://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/lfcspcp/CP_8_19.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-109-02-xxx-DV-LC, 9 Pins per row, Mounting: Snap-in Plastic Peg PCB Lock (http://www.molex.com/pdm_docs/sd/039289068_sd.pdf), generated with kicad-footprint-generator JST GH series connector, B04B-ZESK-D (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py VQFN, 28 Pin (http://www.onsemi.com/pub/Collateral/601AE.PDF), generated with kicad-footprint-generator Mounting Hardware, inside through hole M3, height 5, Wuerth electronics 9774040982 (https://katalog.we-online.de/em/datasheet/9774040982.pdf), generated with kicad-footprint-generator ipc_noLead_generator.py UFQFPN, 32 Pin (JEDEC MO-153 Var HA https://www.jedec.org/document_search?search_api_views_fulltext=MO-153), generated with kicad-footprint-generator Soldered wire connection with double feed through strain relief, for 3 times 0.15 mm² wires, basic insulation, conductor diameter 0.9mm, outer diameter 2mm, outer diameter 1mm, size source Multi-Contact FLEXI-E 0.1 (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_gullwing_generator.py 100-Lead Plastic Thin Shrink Small-Outline Package, Body 3.0x3.0x0.8mm, Texas Instruments DSBGA BGA YFF S-XBGA-N5 Texas Instruments, DSBGA, area grid, NSMD pad definition Appendix A Artix-7 BGA, 22x22 grid, 19x19mm package, 0.8mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug865-Zynq-7000-Pkg-Pinout.pdf#page=77, NSMD pad definition (http://www.ti.com/lit/ds/symlink/opa330.pdf, http://www.ti.com/lit/an/snva009ag/snva009ag.pdf Texas Instruments, DSBGA.

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