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3V3 SDA, SCL #1

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awickert opened this issue Apr 1, 2017 · 1 comment
Open

3V3 SDA, SCL #1

awickert opened this issue Apr 1, 2017 · 1 comment

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@awickert
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awickert commented Apr 1, 2017

  • Add MOSFET + chip resistor level shifter
  • Mark as 3V3
  • Move VCC that is by SDA and SCL
@awickert
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Not a bug on this version, because clock is run off of system-wide VCC and therefore there can't be the clash we saw on the non-level-shifting ALog BottleLogger between the clock and external I2C.

Also not even clearly an enhancement. Just a decision: 3V3 or 5V?

  • 3V3 seems more the standard
  • 3V3 used on main ALog
  • BUT 3V3 requires more parts/cost
  • BUT VCC is used on standard Arduino

Decisions! @superchap123, I recall that you were in favor of this one.

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@awickert