/challenges-projects/design-challenges/smart-home-healthcare-challenge/b/projects/posts/vitarf---a-wrist-node-that-notices-when-someone-needs-helpRecap: VitaRF is a small wrist sensor that reads heart rate, blood oxygen (SpO₂), skin temperature and movement, and sends it over Bluetooth to Home Assistant. The idea is simple: keep an eye on someone who lives alone, without making them wear anythen-USTelligent Community 12https://community.element14.com/challenges-projects/design-challenges/smart-home-healthcare-challenge/b/projects/posts/vitarf---a-wrist-node-that-notices-when-someone-needs-helpMon, 26 Oct 2026 07:44:33 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:ae8b496a-4e67-4fa5-8b07-d2da8665f48eQbit1<p>Nice write up! [mention:c1295226a524499ebc86ab19939f27c2:e9ed411860ed4f2ba0265705b8793d05]&nbsp;Good to see you also interested in algorithms used!</p><img src="https://community.element14.com/aggbug?PostID=30352&AppID=495&AppType=Weblog&ContentType=0" width="1" height="1">