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Adafruit TCA9548A 1-to-8 I2C Multiplexer

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I have a Raspberry Pi 3B+ and I bought two BME280 sensors (specifically these) and I would like to connect them via I2C. I read that you can do software multiplexing but all the information I am finding is incomplete, makes assumptions, or people are commenting that it doesn’t work. Can anyone please let me know what I need to do? For the record, I’ve already hooked up one of them and am getting the readings correctly, but I need both of them connected.

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