1. 04 Mar, 2019 1 commit
  2. 28 Oct, 2018 1 commit
    • Eric Kuzmenko's avatar
      Add a TXB0101 logic level translator to the LCD_RESET# signal, the VIH(max) if... · 199f75a2
      Eric Kuzmenko authored
      Add a TXB0101 logic level translator to the LCD_RESET# signal, the VIH(max) if the LCD's reset pin is 1.8V so the voltage needs to be translated from 3.3V logic down to 1.8V logic
      
      The active TXB0101 level translator is used so that the pin can continue to be externally pulled low by a 10k resistor. The behavior of having this pin supplied with a logic level exceed its maximum rating is unpredictable (could be fine but could also act in unexpected ways). The TXB0101 is already used in the design as U1302, so now there will be 2x of these per board. This also requires two additional 0402 X5R 10V 100nF caps (already have 87 per board of CL05A104MP5NNNC / EmCraft PN: E-CAP-003-01, will now be 89 per board).
      199f75a2
  3. 17 Oct, 2018 2 commits
  4. 15 Oct, 2018 1 commit
  5. 24 Sep, 2018 1 commit
  6. 22 Sep, 2018 1 commit
  7. 21 Sep, 2018 1 commit
  8. 20 Sep, 2018 1 commit
  9. 16 Aug, 2018 2 commits
    • Christian Schilmoeller's avatar
      Fixed an erroneous pin swapping in U402 (MIC2876). · e46526d1
      Christian Schilmoeller authored
      Corrected library entry.
      New placement and wiring for resistors near U402 in layout.
      e46526d1
    • Eric Kuzmenko's avatar
      Make the backlight boost converter compensation capacitor (C459) 10nF instead... · 9234b540
      Eric Kuzmenko authored
      Make the backlight boost converter compensation capacitor (C459) 10nF instead of 100nF (was a typo), make the charge controller's PMID capacitor (C302) 10uF instead of 8.2uF since it is a more common value and is what is being used on the charge controller's eval board, select a 10uF 0603 X5R capacitor rated for 25V for both the PMID cap and the 10uF cap on VBUS, update the .ods BoM with tolerances & ratings for the caps and resistors which will be supplied by the PCBA house, export the component-placement-list file (dvk-mx8m-bsb-all.pos) which gives the coordinates of all components with respect to the top-left fiducial mark, re-export the gerbers for preliminary review (add silkscreen which states that this is preliminary instead of a version number), make a few minor improvements to the board's routing in various spots, update the IMU footprint so that its silkscreen which gives the axis directions is visible on the board, some footprints were updated to be defined as SMD footprints in order to show up on the component-placement list (strictly through-hole components are not listed)
      
      The 0603 10uF 25V caps have been ordered and will be shipped to wherever the assembly is done. This commit contains the preliminary materials which will be reviewed (BoM, .pos file, and gerbers all zipped).
      9234b540
  10. 15 Aug, 2018 1 commit
    • Eric Kuzmenko's avatar
      Move some of the reference designators on the silkscreen layers to more... · 97f08f6a
      Eric Kuzmenko authored
      Move some of the reference designators on the silkscreen layers to more visible positions where possible, update the schematic, BoM, footprint, and layout to reflect the fact that the dual 2-input AND gate (U1803) is actually a 74AUP2G08* part (no longer *LVC*)
      
      The rest of the silkscreen designators still need to be placed in more visible/unobstructed locations. The BoM still needs to have tolerance & rating values enter for all passive components that will be supplied by the PCBA house.
      97f08f6a
  11. 14 Aug, 2018 2 commits
    • Eric Kuzmenko's avatar
      Make the ENET_* traces on the top layer 53mils in order to ensure they have a... · 2456bfb3
      Eric Kuzmenko authored
      Make the ENET_* traces on the top layer 53mils in order to ensure they have a 50Ohm single-ended impedence, move one of the 5V_P bypass caps close to the SoM end of the USB2 diff pair, add meanders to the ENET_TXC, ENET_TX_CTL, ENET_RX_CTL in order to ensure these segments are matched to the long ENET_RXC segment (56.051mm, the rest of the RGMII signals are <10mm skew from this length and don't need adjusting, re-route the SIM card such that UIM-RESET is routed in between UIM-CLK and UIM-DATA as recommended by a BB manufacturer
      2456bfb3
    • Eric Kuzmenko's avatar
      Add a 5.29x27.14mm Purism logo to the "back" silkscreen of the board, seen on... · 0154972b
      Eric Kuzmenko authored
      Add a 5.29x27.14mm Purism logo to the "back" silkscreen of the board, seen on the bottom left edge when facing the display, remove the old schematic rescue files which are remnants from the Kicad 5.0.0 upgrade
      0154972b
  12. 11 Aug, 2018 4 commits
  13. 08 Aug, 2018 2 commits
    • Eric Kuzmenko's avatar
      Move the microphone downward out of the way of the display and re-place and... · df4666a7
      Eric Kuzmenko authored
      Move the microphone downward out of the way of the display and re-place and re-route the HDMI components and traces which become obstructed by this new microphone placement
      df4666a7
    • Eric Kuzmenko's avatar
      Place and route the JTAG circuit, place and route the BOOT_MODE slide switch... · dde321d8
      Eric Kuzmenko authored
      Place and route the JTAG circuit, place and route the BOOT_MODE slide switch circuit, place and route the user-LED circuit, place and route the top-level sheet passive components (I2C2 pull-ups, 5V_SOM, 3V3_OUT, & ENET_2V5 bypass caps, PWR_EN pull-down, USB2_VBUS voltage divider for SoC's comparator, etc), route the microphone to the analog audio switch IC, update the schematic, BoM, and footprints to reflect the MHF4 coax cable change (including them being 5cm long)
      
      Unrouted count is now 324. The power circuit and the display are what is now left to be placed on the board, a few nets currently on the board still need to be connected (~120). 3V3_SNVS and various other misc. power rails still need to be routed on the power plane (vias need to be placed near pads).
      
      JTAG header footprint is accessible from the display side (not underneath the display). User-LED is in a location as-close-as-possible to the bottom center of the board (somewhat near the microphone).
      
      Serpentine bends still need to be added to the CSI to match the intra-pair skew, still need to move the prox sensor to the top of the board!
      dde321d8
  14. 03 Aug, 2018 2 commits
  15. 02 Aug, 2018 3 commits
  16. 01 Aug, 2018 2 commits
  17. 30 Jul, 2018 1 commit
  18. 28 Jul, 2018 1 commit
    • Eric Kuzmenko's avatar
      Begin routing the HDMI circuit · 8c2544ff
      Eric Kuzmenko authored
      Needed to create the HDMI_HEAC_P/N labels to route Utility&HPD as diff pairs. Made cap C1905 NC, which is in parallel with a 0Ohm resistor between the HDMI sheilding and GND.
      8c2544ff
  19. 27 Jul, 2018 1 commit
  20. 26 Jul, 2018 3 commits
  21. 23 Jul, 2018 3 commits
  22. 20 Jul, 2018 1 commit
  23. 19 Jul, 2018 2 commits
  24. 18 Jul, 2018 1 commit