oxullo
Big values for GY-MAX30100
Troubleshooting checklist
- [x] I read the README (on master) thoroughly
- [x] I ran the MAX30100_Tester and I'm going to paste the output down below
- [x] I filled in all the details of my setup down below
The GY-MAX30100 sensor gives wrong values for heart rate - the values are mostly to big, sometimes it gives non-zero values even when I'm not touching the sensor. I changed the IR led current to pox.setIRLedCurrent(MAX30100_LED_CURR_7_6MA) and this way it gives 0 when I dont touch the sensor but it still gives large value for HR.
Tester Output:
Initializing MAX30100..Success Enabling HR/SPO2 mode..done. Configuring LEDs biases to 50mA..done. Lowering the current to 7.6mA..done. Shutting down..done. Resuming normal operation..done. Sampling die temperature..done, temp=0.00C WARNING: Temperature probe reported an odd value
Press any key to go into sampling loop mode
I connected the sensor to an Arduino MEGA 2560 Vin- 3.3V GND-GND SCL-SCL SDA-SDA
Output : Heart rate:119.47bpm / SpO2:95% Beat! Beat! Heart rate:144.82bpm / SpO2:96% Beat! Beat! Beat! Beat! Heart rate:186.02bpm / SpO2:95% Beat! Beat! Beat! Beat! Heart rate:227.04bpm / SpO2:94% Beat!
Arduino IDE version 2.0.3 I got the zip archive from the master branch and added to arduino library
this is the sensor I used - https://www.sigmanortec.ro/senzor-puls-optic-gy-max30102?gclid=CjwKCAjw04yjBhApEiwAJcvNoe6ep7EQXLRGdOR0HxnFfKtAWjC-iBOqamjsQUAgWZ4-ppDLwpj9ohoChpAQAvD_BwE
I am also having this problem with my GY-MAX30100. Is there any way that we can fix this?
Hi did any one of you solved this problem? I am facing the same problem
@BloggingKIng I manage to reduce the values a little by changing some values from MAX30100_beatDetector.h. I changed a bit the threshold values and it did lower the values. I believe that it would also help to change the frequency values from butterworth filter, although I did not try that. I still get some spikes now and then but I used a median filter and is working decent enough.
@PaulaStef thanks for your reply. My problem is that actually Max30100 sends random values and some time eventually stops sending values. I will then have to reset Arduino Uno to get it working back again.
I am interested in that median filter thing. Can you tell m, how did you implement it?
@BloggingKIng I stored 5 consecutive values of pulse from the sensor in an array, sorted it and then a used the value in the middle instead of the current value that the sensor gave (at index 2 starting from 0). When you get a new value you replace it with an existing one in the array. This filter is usually used to reduce noise in images but it worked pretty well.