[HN Gopher] Radar fall detection and breath rate under $40
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       Radar fall detection and breath rate under $40
        
       Author : GameOfKnowing
       Score  : 23 points
       Date   : 2022-01-31 10:00 UTC (1 days ago)
        
 (HTM) web link (www.seeedstudio.com)
 (TXT) w3m dump (www.seeedstudio.com)
        
       | robocat wrote:
       | That board shouldn't have passed QC? The largest SMD on the first
       | image of the board is severely off-centre.
        
         | jacteh wrote:
         | I think you'd be surprised how lax IPC-A-610 can be. That
         | probably just sneaks in as acceptable for class 1/2 (side
         | overhang <=50%). Even class 3 acceptance criteria allows for
         | 25% overhang.
        
         | crystalmeph wrote:
         | They probably gave the marketing department a QC reject to take
         | pictures with, since marketing can't be bothered to worry about
         | things like proper ESD protection =)
        
           | jrockway wrote:
           | I would be shocked if they didn't ship that. The capacitor is
           | electrically connected to the pads, and isn't shorting the
           | row of smaller passives above. It's $32.
        
         | GameOfKnowing wrote:
         | Whoa-- yeah, that's hard to un-see. I can't believe they missed
         | that (and that I did at first glance)
        
       | GameOfKnowing wrote:
       | The breath rate application really got my mind turning here--
       | replacing 2 wearables (breath monitor, fall monitor) with a
       | wireless device, and pulse sensing can already be done by video.
       | Imagine walking into a hospital room or grandma's home & having
       | full bio monitoring with no tubes or cables...
        
       | bloodyplonker22 wrote:
       | Anyone remember how viral "I've fallen and I can't get up" went?
       | This was apparently the main use case and selling point for those
       | devices back then, and it still is now.
        
         | adolph wrote:
         | See also "Apple's new ad invites you to imagine dying alone
         | without a Watch on your wrist"
         | 
         | https://theverge.com/2022/1/1/22862543/apple-watch-911-ad-fe...
        
       | keville wrote:
       | This ought to make for inexpensive home automation sensors that
       | do much better occupancy detection for rooms than pIR sensors,
       | which stall out if you're sitting and don't move enough to
       | trigger "motion" but still want lights on in the room.
        
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       (page generated 2022-02-01 23:00 UTC)