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  1. Oct 22, 2024
  2. Mar 15, 2024
    • Carsten Presser's avatar
      Fix clamp-voltage generation, improve documentation · c88fc290
      Carsten Presser authored
      One of the opamp-units used for the 2.1V clamp-voltage was mirrored,
      resulting in the supply to be connected with reverse polarity.
      
      On top of that, minor documentation stuff has been improved
      * Add MPNs for some more parts
      * Add device-marking field for more parts
      * Fix bug in i2c-xor table
      * +2.5V label actually should be -2.5V
      * Update silkscreen label
      c88fc290
  3. Feb 27, 2024
    • Carsten Presser's avatar
      Improve test software · 828e2f33
      Carsten Presser authored
      The i2c-scanner Arduino sketch was extended to be used for a production
      test. It not only scans the i2c bus, it also checks if the DACs are
      presend and configures them with a set voltage. Additionally, it tries
      to calculate the i2c-address-translation XOR value with the help of an
      extra board that has a single i2c-eeprom with a known address.
      828e2f33
  4. Jan 16, 2024
    • Carsten Presser's avatar
      Unknown changes · e08794ee
      Carsten Presser authored
      It looks like some designator changes in the schematic.
      I am not sure why those are not part of a previous commit.
      The board changes are the result of a new DRC run. One error
      (footprint-type) was changed to warning.
      e08794ee
    • Carsten Presser's avatar
      Change I²C-Translation voltage divider · 92284936
      Carsten Presser authored
      For the upper nibble of the translation the recommended values in the
      datasheet are 976/102kOhm for the 0.09374V/V divider option.
      The 976k resistor was not available. So the divider was changed to the
      values of 1000k/104k. That is more accurate an also neeeds one less item
      in the BOM.
      92284936
  5. Dec 20, 2023
  6. Apr 03, 2023
  7. Mar 09, 2023
  8. Mar 01, 2023
  9. Feb 21, 2023
  10. Feb 17, 2023
  11. Feb 16, 2023
  12. Feb 15, 2023
    • Carsten Presser's avatar
      Add decoupling cap for PCF8574 · 9539be9c
      Carsten Presser authored
      The cap was missing.
      Change default silk text to 0.8mm 0.12mm thicknes
      9539be9c
    • Carsten Presser's avatar
      Apply lessons-learned from first assembly · c05437b3
      Carsten Presser authored
      Voltage divider for 5V LDO is just wrong. 1.6k/510R works. (4.96V)
      Swap R91/R88 values
      Remove Logos from BOM
      Recalculate feedback resistors for Vbias generation, increase their
      values by x10 to limit the current wasted in those resistors.
      Change value of D87 to limit LED-Current
      
      All of those changes do _not_ change the PCB, only the BOM.
      c05437b3
  13. Jan 16, 2023
    • Carsten Presser's avatar
      Improve routing, add Silkscreen · caea21fa
      Carsten Presser authored
      Some nets on the inner layer looked ugly as a result of the
      replicate-layout plugin. That has been fixed.
      Some stitching vias have been added.
      A board-revision was added to the silkscreen.
    • Carsten Presser's avatar
      Add BOM .csv file · 60077f3b
      Carsten Presser authored
      60077f3b
    • Carsten Presser's avatar
      BOM Fixes · 3dd0ef3d
      Carsten Presser authored
      3dd0ef3d
    • Carsten Presser's avatar
      Review fixes and improvements · e8aaae1e
      Carsten Presser authored
      Add Voltage rating to critical capacitors
      Add low-pass filtering caps on some op-amp inputs
      Use PGOOD signal of LM2776 instead of the individual power LEDs
      Set values of feedback-voltage-dividers on LM2776
      Change termination on the TestPulse signal
      Move routing of TestPulse signal to Bot go get 50R impedance
      Add more stitching vias
      Exclude logos from BOM
      e8aaae1e
  14. Dec 23, 2022
  15. Dec 22, 2022
  16. Dec 21, 2022
    • Carsten Presser's avatar
      Add silkscreen docu · f88a0044
      Carsten Presser authored
      Mark the channels
      Add table of channel-mapping
      Add auxilliary mounting holes
      Add Logos and PCB art
      f88a0044
  17. Dec 16, 2022
  18. Dec 07, 2022
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