IOT CONNECTION ISSUE

Hii, may I ask if there might be any connection error between my ESP32 and MAX30102? I used male-to-male jumper wires to connect them, but it seems like the ESP32 still cannot detect the MAX30102 sensor. Does anyone know what could be the issue? Thank you.

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shabaz 1 day ago +1

Your connections locations look fine to me, perhaps it is a software issue. There's also a chance it could be a breadboard or jumper wire quality issue. Ideally you'd use an oscilloscope to check that…

0 shabaz 1 day ago

Your connections locations look fine to me, perhaps it is a software issue. There's also a chance it could be a breadboard or jumper wire quality issue.

Ideally you'd use an oscilloscope to check that you can see I2C data is occurring or not. A logic analyser could be used, but better to start with an oscilloscope and examine the supply, SDA and SCL lines.

Without an oscilloscope, I think the best you can do is swap out the jumper cables in case they are faulty, and maybe try a new breadboard unless you know you can trust it (some of the very cheap ones have poor non-nickel-plated contacts for instance), and double-check the code to try to get confdence that I2C is functioning.
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0 obones 1 day ago

Without the code you are running on the ESP32, it's hard to tell.
I mean, it could either be a faulty connection, or a faulty setup code inside the ESP32
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0 SamanthaCh 6 hours ago in reply to shabaz

Thanks very much, I solved it. It was a wiring issue.
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0 SamanthaCh 6 hours ago in reply to obones

Thank you very much, it was a wiring connection issue.
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