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Team meeting 06/12/2020 #62

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9 tasks done
Informaticore opened this issue Dec 6, 2020 · 0 comments
Open
9 tasks done

Team meeting 06/12/2020 #62

Informaticore opened this issue Dec 6, 2020 · 0 comments

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@Informaticore
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Informaticore commented Dec 6, 2020

Topics:

FIRST THING: find the right MOSFETS!

Current state of the project

  • Replace N-Channel at RTC with P-Channel (see image below) and move the MOSFET to the Regulator sheet @dr-stefan-krank
    image
  • Use a TestPoint for easy add INT track to MCU if needed (just in case)
  • Add DIP-Switch jumper for programming mode to bypass RTC incl debounce (via capacitor)
  • Add GND Pin to J5 and J6 (bottom)
  • +3.3V Switching change to high side switching (instead of low side currently)
  • Research Dual-Channel CMOS component (if we find a good one we go for high side switching on 5V and 3.3V-MCU, if not we keep 5V low-side switching)
  • exchange C12 with 1uF instead 0.1uF for better performance

Footprint assignment

  • we need to assign/re-assign footprints and remove all errors

BOM

  • create a basic BOM for Andreas to give to the manufacturers for a quote

Low Cost Version findings

  • FTDI auto flash mode does not works properly. Sometime it goes into flash randomly after shut-down and power back on
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