* too not two
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I wish I could remember how I heard to buy this early enough https://twitter.com/amelapay/status/1233200566228193281?s=21 …https://twitter.com/amelapay/status/1233200566228193281 …
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I don’t know how you heard, but the rationalists were very much telling everyone to buy these!
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Pulse oximeters are very easy to build; you just need a photodiode, red LED, IR LED, and op-amp. Don’t expect supply chain problems personally but who knows
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I'll wait :D
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I was given this advice from a friend who had covid a month ago and I bought one for $20. A worthwhile insurance policy for everybody.
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I don't know why everyone is so down on phone apps for oximetry. Some aren't perfect, but they are accurate enough and you'll get general trends.
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can't even buy a thermometer right now
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