Bangle.js 2 Cutting Edge - new heart rate algorithm

You are reading a single comment by @Gordon and its replies. Click here to read the full conversation.

•

Gordon

@d3nd3-o0 you're trying to use analogRead on Bangle.js 2? If so that's not going to work - it doesn't have an analog sensor.

With the LED brightness, the heart rate monitor code attempts to adjust the LED brightness to keep the reading from the HRM within range. So if the HRM isn't pointing at anything the LED brightness isn't going to be the 'real' brightness you see.

If anything it's surprising you can see it at all, as Bangle.js should turn off the green LED after a few seconds of the HRM sensor not being near anything.

•

d3nd3-o0 in reply to @Gordon

So if the HRM isn't pointing at anything the LED brightness isn't going to be the 'real' brightness you see.

Not sure which part this is response to. Keep in mind these tests were often done with hrmGreenAdjust false, and hrmWearDetect false, although, you only have to lift the watch a tiny bit to peek at the led without triggering wear detect.

@Gordon Welcome Back, hope you had a merry holiday period.

About

Avatar for Gordon @Gordon started