Hi, stupid question but is it possible, to have adafruit SD shield (RV3) and I2c output/input extender on same line. I would like to have PCF8575 I2C 16-Bit Digital Input Output Expander full of input values that are getting logged into a SD card. I would be using Arduino Uno for that project if po…

I don't see problems. The RTC on the shield and the port expander will share the I2C bus, but the bus is designed for that so that's OK. There will not be interference with the SPI.

Is it possible to have SD shield and Pinout output/input on same lines

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Is it possible to have SD shield and Pinout output/input on same lines

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