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As a European: why are there chips in this? I just broke open mine and it looks like this: https://imgur.com/a/muz7FIy I bought 50 of these 2 weeks ago. Were 3-4 euro a piece.
I'm wondering if they're subsidized, but the price in Germany at the supermarket hovers around 1€ each. I was really surprised to hear that these are not a thing in the US, any idea why?
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Also availability. The more basic the chip, the easier / faster it is to get 1k of them. (or to find a perfect/close match requiring minimal changes)
That's only a recent thing really.
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Basically all those nRF5x products are Arduino compatible AirTags with a battery included. IIRC they also have an imprecise but low power, chip integral temperature gauge. Maybe a wireless interval thermometer might be a good start?
Yea I saw somewhere airtags are just Nordic chips? Kind of surprised because the airpod w1/h1 chips aren’t
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That's only a recent thing really.
No, short term and long term availability of a part in volume has always been a part of circuit design. The current situation has been a unique extreme of this, but buying a million count of an electronic part hasn’t ever been an arbitrary off the shelf affair. How many a distributor has for immediate shipping, the lead time for large quantities, and the end of life plans were always a consideration. Before though th…
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Your simulations sound super interesting, I'd love to read more if you're willing to write about it!
Not the parent, but I wrote a little bit about this here: https://www.jonnor.com/2017/03/host-based-simulation-for-emb... The key thing is to make the majority of the code portable enough to run on a PC. I find the best way to do that is to keep things data-oriented, using Plain Old Data type data structures and pure functions as much as possible. Alternative view: isolate out any device-specific pieces, like I/O int…
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You do, however, need color vision to tell that the control line changed from blue to red (which the instructions tell you to do to verify that the test is working correctly)
Every test I've done (provided for free on the NHS, btw) has just been two red lines. The control line doesn't show up until the buffer solution has wicked along the test strip, so the verification is "does the line next to the letter C show up?"
The directions indicate to verify that the blue control line is present prior to adding the swab, and that the test should not be used if the blue line is not present.
You can verify this for yourself by downloading the official instructions here: https://www.fda.gov/media/141570/download
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You do, however, need color vision to tell that the control line changed from blue to red (which the instructions tell you to do to verify that the test is working correctly)
That's not true for every test, the one I just used begins with no line and then a line appears. So you don't need color vision. You do still need vision, but it's hard to use a COVID test otherwise.
See pages 6 and 7: https://www.fda.gov/media/141570/download
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I'm wondering if they're subsidized, but the price in Germany at the supermarket hovers around 1€ each. I was really surprised to hear that these are not a thing in the US, any idea why?
Here in the NL they're about €2,50 each, so there may be some subsidizing going on in Germany (or we're getting ripped off for €1,50 per test). Schools and food banks can hand out free self tests so there is definitely some kind of subsidizing going on here, but in a different way.
Keep in mind that R$100 means 10% of monthly minimum wage.......