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swharden.com
Personal blog · swharden.com/blogprogrammingsciencehardware
swharden.com is a personal blog at swharden.com about programming, science and hardware. Since 2009, 11 different Hacker News readers have linked it 11 times, most often “DIY ECG Machine On The Cheap with Python”. No feed was found, so read it on the site itself.
Too few sampled comments (5) to say how often HN recommends it.?
Why HN links it
HN readers link this blog for DIY biosignal projects (EEG, EKG, EMG), a Wii Balance Board bathroom scale, and linear data smoothing. Most comments are bare links or citations.
Summarised by Claude from a sample of 5 HN comments that link here. Each comment is marked recommending, critical or neutral (citing without judging); how this works.
Most-linked posts?
- /blog/2013-04-14-simple-diy-ecg-pulse-oximeter-version-2/2 people · 2 mentions · first linked 2013-11-14
- DIY ECG Machine On The Cheap with Python2 people · 2 mentions · first linked 2009-08-22
What Hacker News says?
Most oximetry is performed optically, actually[1], and it is the technology Apple is drawing from to determine heart rate[2]. It's not difficult to build an oximeter[3], though reliable and calibrated O2 sat[4] numbers may be more challenging to derive from a device in the form factor of a consumer watch. 1. https://en.wikipedia.org/wiki/Pulse_oximetry 2. https://en.wikipedia.org/wiki/Photoplethysmogram 3. http://ww…
Comment linking /blog/2013-04-14-simple-diy-ecg-pulse-oximeter-version-2/
on “A Watch Guy's Thoughts on the Apple Watch After Seeing It in the Metal”Submitted DIY ECG Machine On The Cheap with Python as a story · 4 points
HN discussionI have been under the impression that doing this kind of thing is not that difficult (as explained here) but somewhat "dangerous" in that if you get the wiring at all wrong and accidentally apply even a small amount of current you can confuse the heart and get it to damage itself. I do not see any paragraphs here of "dire warning" or even any specific mentions of parts of this process being dangerous, just a comment…
Comment linking /blog/2013-04-14-simple-diy-ecg-pulse-oximeter-version-2/
on “Do-it-yourself EEG, EKG, and EMG”Submitted Realtime Data Plotting With Python as a story · 2 points
HN discussionWell, it looks like they vary by -+0.5kg, since this is what I'm doing here: http://www.stavros.io/misc/weight/ That's why I want a smoothing algorithm, but the one I found here[1] is giving me a bit of a problem (I can't see why the data points are being squeezed). [1] http://www.swharden.com/blog/2008-11-17-linear-data-smoothin...
Comment linking /blog/2008-11-17-linear-data-smoothing-in-python/
on “Turning a Wii Balance Board into a net-enabled bathroom scale”Submitted ECG Machine On The Cheap as a story · 2 points
HN discussionhttps://swharden.com
Comment linking /
on “Ask HN: Could you share your personal website here?”Submitted Embed Arbitrary Payloads into JPEGs Without Special Tools as a story · 1 points
HN discussionThank you for the link and I need to spend some time to read the details. It was stated in the paper I read that tracking one of the proving flights failed but other flights had data which correlated to part of an aircraft's flight path. I agree with your analysis that some pre-knowledge of the track is apparent here and therefore more fully blinded independent experiments would be needed to add credibility. Given t…
Comment linking /software/FSKview/wspr/
on “Seven years on, what do we know about the disappearance of flight MH370?”Submitted Curve Fitting in C# Using Particle Swarm Optimization as a story · 1 points
HN discussionSubmitted How I Deleted My Site from the Wayback Machine (2020) as a story · 1 points
HN discussion
