I have a musical instrument project with a Teensy 3.5 and an audio shield. I need more inputs and am connecting a I2C chip (MCP23017). From my research both the audio shield and I2C chip use pins 18 (SCA) and 19 (SCL) on the Teensy. Is it OK for both of the devices (audio shield and I2C chip) to be connected to the same pins? The program I am running is basically PJRC's SamplePlayer, but with more inputs.
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