1. 22 Sep, 2018 1 commit
  2. 21 Sep, 2018 1 commit
  3. 18 Sep, 2018 1 commit
  4. 12 Sep, 2018 1 commit
  5. 26 Aug, 2018 1 commit
    • Eric Kuzmenko's avatar
      Reduce the trace width of CLKO1 and CLKO2 on the inner layers to 0.127mm in... · c6e5a1c6
      Eric Kuzmenko authored
      Reduce the trace width of CLKO1 and CLKO2 on the inner layers to 0.127mm in order to keep their impedance at 50Ohms throughout their length, do the same for SD2_~RST & WIFI_WAKE, remove a pointless stub found on CLKO1 near U1302, update the version number in the schematics to v0.1.1 and re-export the schematics' PDF
      c6e5a1c6
  6. 21 Aug, 2018 1 commit
  7. 16 Aug, 2018 1 commit
    • 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
  8. 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
  9. 03 Aug, 2018 1 commit
    • Eric Kuzmenko's avatar
      Add pi-matching circuit to the baseband modem antenna's feedline · 2f8fb756
      Eric Kuzmenko authored
      The return path for the antenna may have to have a 6.8nH Murata LQG15HN inductor installed on it (cutting the ground trace shorting the pads). The BoM was updated with the new components and everything was reannotated and updated (page 2's caps were out of order).
      2f8fb756
  10. 02 Aug, 2018 1 commit
  11. 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
  12. 23 Jul, 2018 2 commits
  13. 18 Jul, 2018 1 commit
  14. 17 Jul, 2018 1 commit
  15. 16 Jul, 2018 1 commit
  16. 11 Jul, 2018 1 commit
    • Eric Kuzmenko's avatar
      Replace the 103HT NTC thermistor with a ERTJ1VG103FA as found in TI's... · 2a2eba5c
      Eric Kuzmenko authored
      Replace the 103HT NTC thermistor with a ERTJ1VG103FA as found in TI's TIDA-01182 eval board which has a charge controller IC from the same family and uses an 18650 battery, change is due to it being smaller, cheaper, and has the same B value as the recommended thermistor in the charge controller IC's datasheet, comparing the thermistors' tables shows that they are nearly identical and that it should be a drop-in replacement
      2a2eba5c
  17. 09 Jul, 2018 2 commits
  18. 07 Jul, 2018 1 commit
  19. 05 Jul, 2018 3 commits
  20. 04 Jul, 2018 1 commit
    • Eric Kuzmenko's avatar
      Now using GPIO5_IO03 (P4.03) to put the class-D op-amp in shutdown and... · 3bf0094e
      Eric Kuzmenko authored
      Now using GPIO5_IO03 (P4.03) to put the class-D op-amp in shutdown and conserve energy when muted, make C1716 near the ETH PHY's DVDDL pin 47 220nF instead of 10uF (EmCraft suggested that this should be 100nF but their's is 220nF, asked why), added a 10k pull-down to PAM2841's ENA pin, added a 100nF cap to the smart card's C1 VCC pin, added a 1uF cap to the haptic motor circuit's 3V3_P rail
      
      Still need to use I2C3 instead of I2C1 according to EmCraft's suggestions.
      3bf0094e
  21. 03 Jul, 2018 1 commit
  22. 29 Jun, 2018 1 commit
  23. 28 Jun, 2018 1 commit
  24. 27 Jun, 2018 1 commit
  25. 26 Jun, 2018 1 commit
  26. 25 Jun, 2018 1 commit
  27. 24 Jun, 2018 1 commit
    • Eric Kuzmenko's avatar
      Add proper WWAN reset circuit using a MMBT2222A NPN BJT along with a 100nF cap... · 3b5880ca
      Eric Kuzmenko authored
      Add proper WWAN reset circuit using a MMBT2222A NPN BJT along with a 100nF cap and a TVS diode, make needed adjustements to the WWAN's SIM card circuit (UIM-CLK and UIM-RESET caps are NC & added 4.7k series resistor to SIM_DETECT_O#), assign the MMBT2222A footprint to KiCad's official SOT-23 footprint (identical to the spec sheet's recommended land pattern)
      
      If necessary, the NC cap pads on UIM-CLK and UIM-RESET can be tested with various values during the first prototype debugging phase.
      3b5880ca
  28. 23 Jun, 2018 1 commit
  29. 22 Jun, 2018 2 commits
    • Christian Schilmoeller's avatar
      Small change in footprint assignment of the SOM: · 12e88a43
      Christian Schilmoeller authored
      Old situation:
      First footprint of the SOM contains outline, mounting holes, footprint of P1 and markers for positions of P2, P3 and P4.
      Second, third and forth footprint contain only P2..P4 connectors.
      This situation leads to a problem with the BoM, because the 4 identical connectors could not be grouped together.
      
      New situation:
      Outline, mounting holes and position markers are now located in the footprint which is assigned to the SOM placeholder
      4 identical footprints assigned to the SOM's connectors P1..P4 contain only the connector footprint.
      This shouldn't cause problems with the BoM.
      12e88a43
    • Eric Kuzmenko's avatar
      Add mounting holes to the schematic and assign the associated M2 hole... · 7d21696e
      Eric Kuzmenko authored
      Add mounting holes to the schematic and assign the associated M2 hole footprint, add fiducial marks to schematic and assign the associated 1mm diameter copper with 2mm diameter solder mask opening footprint, make various visual adjustments throughout the schematic
      7d21696e
  30. 21 Jun, 2018 1 commit
    • Eric Kuzmenko's avatar
      Replace WWAN M.2 circuit with one intended for mPCIe modules, include... · 456a509a
      Eric Kuzmenko authored
      Replace WWAN M.2 circuit with one intended for mPCIe modules, include 74LVC1G08 single 2-input AND gate, create the AND gate's footprint and use the official SOT-23-5 3D model
      
      The mini-SIM slot will need to be replaced with one that has an active-LOW detection pin. Will want to see if we can find cheap electrolytic to replace a few of the tantalum caps with (not all since we still need some low ESR, high capacitance, low profile, caps).
      456a509a
  31. 20 Jun, 2018 2 commits
  32. 19 Jun, 2018 1 commit
  33. 17 Jun, 2018 1 commit