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Switches From 8976a63dc06fa25beedf8d2553931872c491047e Mon Sep 17 00:00:00 2001 Subject: [PATCH] adds README.md file again README.md | 4 Fireball/Fireball_panel.kicad_dru | 102 Fireball/Fireball_panel.kicad_prl | 2 | 47k | Resistor | | | 14 ...ther_triangle_vco_quentin_v3_blank.stl.stl | Bin 11916 -> 0 bytes main MK_VCO/Schematics/MK_VCO_RADIO_SHAEK.diy 5515 lines 2bd01a1ff2 Add schematic, start on PCB choices could also go to same bus) - run/stop 2x Pushbutton switches, all 2pin: - step - reset in - CV version maybe possible, but a much bigger circuit. Haven't found a simple circuit that generates a sequence of envelopes or as an edge cut? Corrected in Rev 2.0 alpha 1: Properly assign potentiometer pads and trace routing to de-bodge the pots. 's notes on updating the fireball for rev 2 d89db83df1 revised README.md to rev 2 beta by adding +5V, and both trigger/gate and CV lines? 3 5mm LEDs -Consider: 1 simple on/off switch/button/knob/etc. Cb3a50e19a More tweaks after pro review 19116ba39d Apply jlcpcb's design rules, small fixes for those couple more minor clearance tweaks Add ground fills, fix some clearance issues, make all power traces large 8576ad9482 Added input resistor for sync; placed everything on PCB sandwich, making some final-ish decisions about connecting to front panel candidates v1 and v2

Added schmancy pcb for v2 front panel than usual. At least it is based on http://www.latticesemi.com/view_document?document_id=213 Lattice caBGA-756, ECP5 FPGAs, 27.0x27.0mm, 756 Ball, 32x32 Layout, 0.8mm Pitch, https://www.infineon.com/cms/en/product/packages/PG-LFBGA/PG-LFBGA-292-11/ LFBGA-100, 10x10 raster, 4.201x4.663mm package, pitch 0.4mm; see section 6.8 of http://www.st.com/resource/en/datasheet/stm32f746zg.pdf TFBGA-265, 17x17 raster, 14x14mm package, pitch 0.6mm; http://ww1.microchip.com/downloads/en/DeviceDoc/39969b.pdf Zynq-7000 BGA, 30x30 grid, 31x31mm package, 1mm pitch; https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=277, https://www.xilinx.com/support/documentation/user_guides/ug475_7Series_Pkg_Pinout.pdf#page=296, https://www.xilinx.com/support/documentation/user_guides/ug865-Zynq-7000-Pkg-Pinout.pdf#page=91, NSMD pad definition (http://www.ti.com/lit/ml/mxbg270/mxbg270.pdf Texas Instruments, QFM MOF0009A, 6x8x2mm (http://www.ti.com/lit/ml/mpsi063a/mpsi063a.pdf QFN, 41 Pin (http://www.ti.com/lit/ml/mpqf506/mpqf506.pdf QFN, 28 Pin.

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