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[feature] battery indicator #36

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hdhoang opened this issue Mar 12, 2018 · 2 comments
Open

[feature] battery indicator #36

hdhoang opened this issue Mar 12, 2018 · 2 comments

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@hdhoang
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hdhoang commented Mar 12, 2018

ISTR #dev-chat said that there's no wire for the MCU to read the voltage level, so this might go into the README as not possible.

Otherwise, I suggest these feature levels:

  • Low battery indicator (need coordinating with led theme)
  • Led battery meter
  • Awesome level: BLE reporting (need coordinating with BLE chip?)
@ah-
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ah- commented Mar 12, 2018

I remember the same. According to https://github.com/hi-a/annepro-key#hardware there's a bq24075 charger, which doesn't seem to give us voltage: http://www.ti.com/lit/ds/symlink/bq24075-q1.pdf

I'm not sure if any of the other chips might help us, there's a tiny U5 that I'm not quite sure what it is?

The other bit to investigate would be wether PGOOD would let us at least do a low battery warning?

I haven't really looked into any of this yet, my dev keyboard runs without the battery attached.

@JacobBennett
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JacobBennett commented Mar 28, 2018 •
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As a side note, here is a really cool project that details adding an on off switch as well as a hardware battery indicator.

https://imgur.com/r/AnnePro/KNNts

image

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@hdhoang @ah- @JacobBennett