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LowCost Rev1 issues #63

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Tobi3566 opened this issue Dec 7, 2020 · 0 comments
Open

LowCost Rev1 issues #63

Tobi3566 opened this issue Dec 7, 2020 · 0 comments
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All-in-One All-in-One Board Version (Batt. Charger + µC) var_lowcost

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@Tobi3566
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Tobi3566 commented Dec 7, 2020

  1. Missing pullup for io Expander (fixed)
  2. Missing pullup for GPIO0 Pin (fixed)
  3. Missing pullup for EN Pin (fixed)
  4. Cap on Enable pin to small (fixed)
  5. power cut to ESP while FTDI is still powered via USB caused it to bootup in Flash mode (fixed by adding diode in series to only enable the FTDI to pull down EN pin)
  6. wrong pin mapping of FTDI crystal (fixed)
  7. wrong pinmaping of auto reset Transistors (fixed)
  8. Interrupt line not on the pin header for easy override (fixed)
  9. missing bypass cap for IO expander (fixed)
  10. unstable IO expander I2C communication due to Vlogic being supplied by VBat (fixed by connecting Expander supplies to V_I2C
@MantaRayDeeJay MantaRayDeeJay added var_lowcost All-in-One All-in-One Board Version (Batt. Charger + µC) labels Feb 2, 2021
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@MantaRayDeeJay @Tobi3566