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Whenever possible; some fabs charge more for ovals PCB layout: front, back How to use 7.5mm holes, not 6mm alpha pots - 9.8mm, +2mm rotary - 11.5mm, +3.5mm -- biggest by far, maybe 12.6mm? Alpha pots: barely enough to attach knob 01bb4964a6 Add CV in to pause the clock oscillilator an external CV-to-pulse-rate module? Is this even useful? Seven-segment display. Can be done, but requires a trigger-sized pulse on input. - Portamento (aka slew rate controller aka glide). - Knob version fairly simple. - CV Range - Once/Cont 11 Toggle Switches, 2pin: all step switches (all go to same bus) - run/stop 2x Pushbutton switches, all 2pin: - all step switches (all go to 10 steps, but limited by decade counter expects CLOCK to pass 1/2 of V+ (i.e. 6v) but many people have made generous contributions to the present or absence of Contributions are its original creation(s) or it has to go all the same as Littelfuse_Package_H_XN2MM, https://www.infineon.com/dgdl/Infineon-FS75R07N2E4-DS-v02_00-en_de.pdf?fileId=db3a30432f5008fe012f52f916333979 35-lead TH, EasyPIM 2B, same as ST_ACEPACK-2-CIB, https://www.infineon.com/dgdl/Infineon-FP50R06W2E3-DS-v02_02-EN.pdf?fileId=db3a30431b3e89eb011b455c99987d24 24-lead TH, Package W, https://www.littelfuse.com/~/media/electronics/datasheets/power_semiconductors/littelfuse_power_semiconductor_igbt_module_mg1250w_xbn2mm_datasheet.pdf.pdf 35-lead TH, ACEPACK 2 CIB, PressFIT, https://www.st.com/resource/en/datasheet/a2c50s65m2-f.pdf 25-lead TH, SDIP-25L, https://www.st.com/resource/en/datasheet/stgips20k60.pdf Valve ECC-83-1 round pins Valve ECC-83-2 flat pins Mini-Pentode, 5-pin, e.g. JAN6418 Valve Mini-Pentode 5-pin JAN6418 Varistor, diameter 12mm, width 4.6mm, pitch 7.5mm size 17.3x14mm^2 drill 1.15mm pad 3mm Terminal Block 4Ucon ItemNo. 19964, 6 pins, pitch 2.5mm, size 7.2x10mm^2, drill diamater 1.1mm, pad diameter 2.1mm, see http://www.te.com/commerce/DocumentDelivery/DDEController?Action=showdoc&DocId=Customer+Drawing%7F282834%7FC1%7Fpdf%7FEnglish%7FENG_CD_282834_C1.pdf, script-generated using https://github.com/pointhi/kicad-footprint-generator/scripts/TerminalBlock_RND THT terminal block (Script generated with kicad-footprint-generator Mounting Hardware, inside through hole 3.3mm, height 15, Wuerth electronics 97730506330 (https://katalog.we-online.com/em/datasheet/97730506330.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 2.5/6-V-5.0-EX Terminal Block, 1732438 (https://www.phoenixcontact.com/online/portal/gb/?uri=pxc-oc-itemdetail:pid=1732438), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-119-02-xxx-DV-BE, 19 Pins per row (https://www.hirose.com/product/en/products/FH12/FH12-24S-0.5SH(55)/), generated with kicad-footprint-generator Hirose DF12E SMD, DF12E3.0-50DP-0.5V, 50 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), generated with kicad-footprint-generator ipc_gullwing_generator.py EQFP, 144 Pin (https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/packaging/04r00476-02.pdf), generated with kicad-footprint-generator JST PH series connector, S13B-PH-SM4-TB (http://www.jst-mfg.com/product/pdf/eng/ePH.pdf), generated with kicad-footprint-generator JST PH series connector, 505405-1470 (http://www.molex.com/pdm_docs/sd/5054050270_sd.pdf), generated with kicad-footprint-generator Mounting Hardware, inside through hole M2, height 1, Wuerth electronics 9774090960 (https://katalog.we-online.de/em/datasheet/9774090960.pdf,), generated with kicad-footprint-generator ipc_gullwing_generator.py TSSOP.

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