amanm27

@biomurph Thank you for your quick response! I have a few follow-up questions about taking the software timer approach. First of all, are there any other major drawbacks in using...

@biomurph we were actually able to set up reliable hardware timer interrupts at 500 Hz, which we validated to indeed fire off every 2ms by toggling a GPIO pin. We...

@biomurph Our sketch also includes bluetooth advertising at the same time, so looks like the interrupts seemed to work fine with that as well! Our BLE activity and pulse sampling...

@biomurph Hello! I'm having a similar problem, getting high values for BPM using the PulseSensor_BPM_Alternative sketch (consistently above 100bpm, usually between 100 and 150bpm). I'm running it on a Adafruit...

@biomurph Thanks for the pointers! Unfortunately I don't have access to other Arduino hardware at the moment. I see your point about the dicrotic notch potentially contributing to high BPM,...

@biomurph I haven't modified the sketch at all. As far as my setup, I'm using the PulseSensor with an Adafruit Bluefruit Feather (nRF52832), running Arduino 1.8.13 on a MacBook Pro...

@biomurph ahh that makes sense. Thank you so much!

@biomurph we seem to have fixed the issue of high HR values, and are now consistently getting HR values below 90 bpm. The main fix was to disengage our code...