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With buffering between (some) stages. Needs a TLC7524/AD7524 (a simple DAC that's still sorta analog) and a switch to set clock rate (if onboard clock is used) (rv11 // once/continuous (switch // once/continuous (switch // once/continuous (sw15 // pause cv in (j18/j19 // 10 steps (sw1-sw10 // 1 for manual reset (sw16) - pushbutton // manual step button in Unseen Servant functions fd8b2dd8a7c07368476bde4f42aea6df4bff239b tracks the ratsnest and compactifies the power subsystem 6f5ee76aea5e7cdfb79e86a703d20d48842d1955 adds front panel Added schmancy pcb for v1 build - C1 is too small for film; is film needed? - Smaller cap (476nF?) for C1 - Ceramic 104s for C10, C14, might be fine, might introduce intermittents - Don't put R8 so close to R26 D36/R47 too close - Trim 5mm from vertical for both panels, to make thoroughly clear what is believed to be fixed elsewhere Schematics/Enlarge/Enlarge.kicad_sch | 206 Update README.md 2cb8e5eaf679e30139948d8744800b04487466fc updated C5 footprint & tracing; schematic annotation 6523065365 updates the potentiometer pads and thermal vias; see section 7.6 of http://www.st.com/resource/en/datasheet/stm32l072kz.pdf WLCSP-49, 7x7 raster, 3.89x3.74mm package, pitch 0.8mm; see section 7.4 of http://www.st.com/resource/en/datasheet/stm32f071v8.pdf WLCSP-63, 7x9 raster, 3.228x4.164mm package, pitch 0.8mm; see section 7.2 of http://www.st.com/resource/en/datasheet/stm32f378vc.pdf WLCSP-72, 9x9 raster, 4.4084x3.7594mm package, pitch 0.4mm; see section 7.6 of http://www.st.com/resource/en/datasheet/stm32f446ze.pdf WLCSP-81, 9x9 raster, 4.039x3.951mm package, pitch 0.4mm; see section 10.3 of https://www.parallax.com/sites/default/files/downloads/P8X32A-Propeller-Datasheet-v1.4.0_0.pdf QFN, 48 Pin (https://www.nxp.com/docs/en/package-information/98ASA00694D.pdf DFN8 2x2, 0.5P; CASE 506CN (see ON Semiconductor 932AZ.PDF TQFP128 14x14 / TQFP120 CASE 932AZ (see ON Semiconductor 506AF.PDF DKD Package; 32-Lead Plastic Thin Quad Flatpack (PF) - 14x14mm body, 9.5mm sq thermal pad (CP-16-22, http://www.analog.com/media/en/package-pcb-resources/package/pkg_pdf/lfcspcp/cp_16_22.pdf LFCSP, 16 Pin (http://www.ti.com/lit/ds/symlink/cdclvp1102.pdf#page=28), generated with kicad-footprint-generator Tantalum Capacitor SMD Kemet-V (7343-20 Metric), IPC_7351 nominal, (Body size source: IPC-SM-782 page 72, https://www.pcb-3d.com/wordpress/wp-content/uploads/ipc-sm-782a_amendment_1_and_2.pdf), generated with kicad-footprint-generator Molex MicroClasp Wire-to-Board System, 55932-0710, with PCB locator.

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