1. 21 May, 2019 1 commit
  2. 26 Oct, 2018 1 commit
  3. 25 Sep, 2018 1 commit
  4. 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
  5. 14 Aug, 2018 1 commit
    • 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
  6. 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
  7. 23 Jul, 2018 3 commits
  8. 17 Jul, 2018 1 commit
  9. 16 Jul, 2018 1 commit
  10. 11 Jul, 2018 2 commits
  11. 09 Jul, 2018 1 commit
  12. 07 Jul, 2018 1 commit
  13. 05 Jul, 2018 1 commit
  14. 29 Jun, 2018 1 commit
    • Eric Kuzmenko's avatar
      Move USB-C, Mini-HDMI, RJ45, and 3.5mm jack receptacles to the bottom of the... · 71d87ac3
      Eric Kuzmenko authored
      Move USB-C, Mini-HDMI, RJ45, and 3.5mm jack receptacles to the bottom of the board, also place the Micro-SD card slot to the left of all of the receptacles centered at the bottom, place the Smart-Card slot just above the Micro-SD card facing the left, add 3D models to each of the respective connectors/sockets
      
      The order of the various receptacles and sockets can be changed bit the pitch between them should stay about the same since it is currently as tightly packed asreasonably possible (1.5~2.5mm clearance between connectors).
      71d87ac3
  15. 28 Jun, 2018 1 commit
  16. 26 Jun, 2018 1 commit
  17. 25 Jun, 2018 1 commit
  18. 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
  19. 23 Jun, 2018 1 commit
  20. 22 Jun, 2018 1 commit
  21. 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
  22. 20 Jun, 2018 2 commits
  23. 19 Jun, 2018 1 commit
  24. 17 Jun, 2018 2 commits
  25. 16 Jun, 2018 1 commit
  26. 15 Jun, 2018 5 commits
  27. 13 Jun, 2018 3 commits
  28. 12 Jun, 2018 1 commit
    • Eric Kuzmenko's avatar
      Add GNSS antenna footprint including correct 50Ohm feed line dimensions and... · 05b25768
      Eric Kuzmenko authored
      Add GNSS antenna footprint including correct 50Ohm feed line dimensions and keepout area, add u-blox MAX-8 3D model, rename all instances of MAX-M8* to MAX-8* due to part selection, antenna feed line calculatos included (coplanar waveguide)
      
      Need to add placeholder footprints for the other four antennae which will be represented as simple rectangular areas where the antennae will occupy. After that, all that is left is to assign the various remaining IC footprints and finally import all footprints into PCBNew & begin layout!
      05b25768
  29. 11 Jun, 2018 1 commit