MAX30100 ?

[titithebad]

Hello !

Does the script work woth MAX30100 chip ?

I try it but nothing happen. No red light is on...

Regards

[vrano714]

Hi.

I think it does not work with MAX30100.

Searching on github showed this: https://github.com/mfitzp/max30100
How about trying this one?

I hope you successfully make your sensor work.

[titithebad]

Hin

Thanks. Finally I bought a max30102.

The red light is now on but the value are false 👍

pi@rpi-medical:~/max30102-tutorial-raspberrypi $ python test.py
Channel: 1, address: 0x57
(-999, False, -999, False)
(-999, False, -999, False)
(-999, False, -999, False)
(-999, False, -999, False)
(-999, False, -999, False)
(-999, False, -999, False)
(150, True, 71.26890599999999, True) ==> only these values
(-999, False, -999, False)
(-999, False, -999, False)
(20, True, -999, False)
(-999, False, -999, False)
(-999, False, -999, False)
(-999, False, -999, False)
(-999, False, -999, False)

Do you know why ?

Regards

[vrano714]

You successfully made the sensor turn on. That's good. 👍

There can be many reasons for that.
Finger placement is most likely.
Your finger should be steady on the sensor.
Because the sensor has to read blood flow, put your finger softly for blood to flow normally.

Saving the raw sensor values and plotting them may help.
HR/SpO2 calculation uses peak detection.
If the plotting is too flat, peak detection cannot work.

In my opinion, max30102 sensor is susceptible to environmental factors such as finger placement, thickness of the skin and so on. 🤔
Please try several times to find the optimal way of placing finger.

[titithebad]

Can you tell me the electrical connection you made with your Rpi please ?

[vrano714]

Here's the connection:

Pin order of the sensor may be different with yours. Please refer to pin names.

(I think there is no problem in connection because you can see red light from the sensor and retrieve some values)

[titithebad]

So, no problem with the connexion... How can I do to have more values for calculating the HR et Sp02 ?

[titithebad]

Another question, how do you put your finger on the sensor ?

[vrano714]

more values

How about referring to "Running Continuously" (in README.md)?

put your finger

I put my index finger, like when touching a fingerprint reader.