I'm working on a project in which I want to use a variety of sensors which are all compatible with the I2C interface:SHT35, TSL2591, AS7262, SenseAir K30. I'm not too sure what power pin, 3.3V or 5V, I should use to have viable I2C functionality. The modules and sensor have the following absolute v…

I2C voltage levels for pullup (3.3V/5V sensors)

PhoenixRe April 11, 2018, 2:30pm 3

Removing restors seems good. I want to connect the K30 to the same I2C interface as the other sensors.

I'm leaning towards using my Uno.

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