It would be interesting to have a list of places where you can use one. FabLab Zürich is the only hackerspace I found at first search. https://wiki.zurich.fablab.ch/Kniterate
You got to weigh this against abortions for unborn children diagnosed (maybe even wrongly, the tests are really not that exact) with Down's syndrome. The slippery slope already began a long time ago probably.
By week 20 there is practically no chance you're not going to know if you're carrying a baby with downs or not unless you refuse all the modern screening/tests available.
NIPT tests can be done at week 8 and give a very high indicator that can be followed up with close monitoring/invasive tests at week 14-15 that give a 99% accuracy. That's hardly "are really not that exact".
Per Wikipedia, Down's syndrome currently occurs in ~1 in 1000 live births, and used to occur in 2 in 1000 live births some decades ago, in the USA. That means that a test with a 1% false positive rate (99% accuracy) will lead to a false positive for 98-99 healthy embryos per 1000 live births. I would say that this is fair to call "not all that accurate".
Note: I am not in anyway saying that this means that people shouldn't trust the tests, or anything like that. Just reminding everyone that a test's accuracy has to be compared to the incidence of the disease to decide if it's high or not.
Screening ‘test’ vs diagnostic ‘test’ is an important concept.
Screening tests are designed for sensitivity — false positives are expected and identify who would benefit from additional diagnostic tool and procedures.
The maker community is so much more than just 3D printing and soldering! The fight for open-source programming tools and open file formats are so important.
Awesome writeup! I wonder whether with a real contact mic (Korg offers one for about 20 bucks) you could get much better results. Due to no 3,5mm on phones anymore it might be easier to use a sound-enabled SBC though.
This is definitely the way. Even the old wired mics Apple phones used to ship with that had the little rectangle mic works better because you can press it right up against the case back.
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