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3 votes

Multiple unique I2C devices interfere

It turns out the issue was with limited dynamic memory. The MAX30105 requires a lot of space for its calculations and adding anything else, whether that be another sensor or even a software serial ...
0 votes

I2C HMC5983 communication issue

There are certain situations where the device can send a nack after a valid address is sent - search "received NACK on transmit of address". Nothing I read applies specifically to your ...
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