Hi Erin, Exactly, I’m scanning addresses from 0 to 128 to catch all possible I2C addresses. As for the clock speed, it's currently set between 350 and 400 kHz, which should be low enough, I believe. In the past, I’ve encountered chips that didn’t respond because they were in sleep mode, requiring a special pin to be pulled high or low to wake them up. Is there anything like that with this DAC? I don’t think so, but I also don’t see any other clues at the moment. Thanks, Jean
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