Digital 1-to-8 I2C Multiplexer FAQ【DFR0576】
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Q1:When a main controller is connected to two expansion modules at the same time, the data will interfere with each other.
A1:We have optimized this problem in our library file, you can disable the channel in the code, see the sample code in the link below for details:
https://github.com/DFRobot/DFRobot_I2C_Multiplexer/blob/main/examples/multiSsd1306/multiSsd1306.ino
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If you have other questions, just feel free to post them in our forum for consultation. We will reply them as soon as possible and improve the product FAQ gradually.