Difference between revisions of "Orchard EVT1 to DVT1"
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{| class="wikitable sortable" | {| class="wikitable sortable" | ||
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| − | ! scope="col" | | + | ! scope="col" | EVT |
| − | ! scope="col" | | + | ! scope="col" | DVT |
! scope="col" | Notes | ! scope="col" | Notes | ||
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Revision as of 07:55, 25 April 2015
Contents
ECO1: Fix Microphone mirroring
Microphone schematic symbol was mirrored. No BOM change, board layout change only.
ECO2: Make battery easier and safer to solder
Space battery terminals wider, increase pad size, and add solder mask openings around the battery tabs. This makes it less likely to short wires together during a botched soldering operation.
ECO3: Fix gas gauge topology
Gas gauge goes between the charger and battery, not between the charger and the system. Oops!
ECO4: Add isolation resistors on SPI to OLED=
For independent I2C operation of the OLED and complete dedication of the SPI bus to BLE, isolation resistors are needed on SPI1_SCK and SPI1_MOSI to the OLED display.
| EVT | DVT | Notes |
|---|---|---|
| added | R19D 0 ohm | |
| added | R20D 0 ohm |
