I am working on a major project for rocket telemetry and I've stumbled on a strange conflict between an SD Card (on SPI) and a MPU9250 accelerometer (on I2C). These are both connected to an Arduino Mega 2560 board mounted on a custom shield. There is nothing else on the SPI bus and there is a small …

SD write interference with MPU9250 accelerometer ??

rtek1000 May 23, 2018, 4:15pm 8

Hello,

As far as I know, I2C operates with "open collector," which means that only the pull-up resistors will provide some power, so why use an adapter in that field?

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SD write interference with MPU9250 accelerometer ??

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