[Alessandro G.]

(02-11-2016, 08:48 PM)Womblestew Wrote:  What tech is being used in this module? How is accuracy being addressed?
I have used Fitbit heart rate monitoring on and off for a year, and I am pretty unimpressed with how their trackers perform in this area. No mater where I wear the trackers on my arm, be it as Fitbit recommend, to as far up the arm as the strap will allow, wearing the tracker on the inner side of the arm, and any combination of the above or in between I get constant loss of "signal" along with readings that are way out from where a chest strap monitor, worn at the same time indicates. I know Fitbit denies that there is anything wrong, but from experience, friends who find the same problem, and many online also reporting the same, there is definitely something not quite right with the system they use, be it hardware or software.
I'm just hoping that the heart rate module will not have the same problems. I would be interested in ordering one but it will not be until the accuracy can be proven to be true.

So, as far as hardware is concerned, the following comes straight from their KS campaign: "Advanced heart rate monitoring module will be developed in partnership with PixArt Imaging, a leading provider of optical sensors, with inbuilt tri-LED pulse sensor". This is a link to PixArt website, to the specs page of their 3-led heart rate sensor: PixArt Heart Rate Sensor. The specs are certainly high-grade. All of this said, how effective and accurate is the Heart Rate module? Well, there's no way to know for sure, but the team stated in the latest update that they're doing extensive tests on the module, to find out if there might be some position constraints for it to work at full capacity. The new longer battery module must have caused some delays in the tests, as the HR sensor behavior, already quite difficult to predict as different people have different wrists and might place the module in different positions, would be affected by the presence (or the absence) of a battery module, that would cause it to be positioned in slightly different locations. What I know for sure is that the team knows how important the HR module is from a commercial point of view, so there's no way they're releasing a module with reading issues.