71 lines
1.6 KiB
Markdown
71 lines
1.6 KiB
Markdown
# changelog
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Note that numbers are skipped arbitrarily based on my whims and fancies.
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## revision 7.2 (untested)
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Previous revision: 7.1
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Compatibility:
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- Pinout identical to 6.3
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- New stencil required (different from 7.1)
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Changes:
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1. remove I2C pullups from MAX17048 chip; they were frying the MCU IO pins
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2. shrink LEDs to 0402 size
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3. add solder points for metal can
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## revision 7.1 (do not build -- broken)
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Previous revision: 6.3
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Compatibility:
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- Pinout identical to 6.3
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- New stencil required
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Changes:
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1. add on-board MAX17048 fuel gauge IC for battery monitoring
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## revision 6.3
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Previous revision: 6.1
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Compatibility:
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- (Slightly) incompatible pinout: `VDDH` pin (top right) changed to `VDD`
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- Stencil / position / parts compatible with 5.17+
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- Underside pads compatible with 6.1
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Changes:
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1. Change the `VDDH` extra pin to be `VDD` instead; note that it's usually an output, and should only draw a maximum of 25mA (less when transmitting!)
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2. Fiddle slightly with the antenna layout (with ref. to the nRF52840 Dongle from Nordic) even though I don't know what I'm doing
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3. Adjust trace routing around the antenna feed to improve ground plane coverage
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## revision 6.1
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Previous revision: 5.20
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Compatibility:
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- Incompatible pinout, bottom pad layout for USB changed (SWD pad positions unchanged).
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- Stencil / position / parts compatible with revisions 5.17 - 5.20.
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Changes:
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1. Changed `P1.00` to `P1.08` (still high drive)
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2. Exposed the old `P1.00` as an `SWO` pad instead (useful for debug trace output)
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3. Changed the `VBUS` pin to expose `VDDH` instead
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4. `VBUS` exposed as an underside pad
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