Pulse Sensor

Item dispatched by HellasDigital and not remotely as described: 1) Soft braided-wire ribbon cable. Not kidding, that's one nice cable! Not included - cheap cable used 2) An Ear Clip that's perfectly sized to the sensor. Not included 3) A Velcro Finger Strap, just like the pro's. Not included 4) Transparent Vinyl Dots, which make electrical insulation simple. Not included This is the knockoff version - no doubt.

Fonctionne bien quand il n'y a pas de mouvement parasite. Bien donc pour une utilisation en statique. En effet peu importe la mise en place (attache), la sueur et les frottements sont a proscrire pour que le capteur reste précis.

This worked great and without issues. Signal is quite clean.

It's good, not great. It works most of the time when you have your finger positioned JUST right, but it can sometimes produce wildly varied results which means it is NOT a reliable measuring tool. The build quality seems good but for $30 I expected something a bit more consistent. There are $5 versions of this available which I have not tested but kinda wish I had. I expect a bit of flakiness at a $5 price point - not at $30. To their credit the Arduino libraries and example code for the sensor seem solid and helpful and their website has a lot of useful information. This is an open source project which is great, but if you are going to position yourself as the premium version of the product I would expect better results.

The PulseSensors arrived in time and there were no damages. Before use, the sensor needs to be protected. There a transparent vinyl pad enclosed for the front and velcro-pads for the back. The (good) instructions tell you to seal it into hot glue, but I will do this later. The examples they provide are nice and work flawlessly. Only the pressure you apply with your finger is critical. A quite light pressure worked best for me, but its hard to be constant. Maybe a big clip, like they have in hospitals, would make it easier. I did not try the mounting variant with the ear-clip yet.

It's a little pricey for what it is. I bought this for a simple project with an Arduino Uno, and it worked fine. It's a little finicky, which I knew to expect when I bought it. It's not a super advanced piece of technology, but it's good for a beginner project. The code online is fine, if I recall correctly, it worked okay, maybe a few adjustments? My favorite part is the velcro that it comes with to attach to your finger. Apparently to use the ear clip, you have to hot-glue the sensor onto the clip. I didn't want to try this for fear of breaking the sensitive pieces on the back of the sensor. It also comes with little vinyl covers for the sensor. These are nice, they're the right size.