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Author Topic: DS1990A serial id i-button for trade  (Read 945 times)
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i got a bunch of these, brand new, im not gonna use anymore. we originally got them for an access control project. they come in fob's. datasheet here im looking for temperature i buttons specifically, or i2c rtc's with alarms, or any weather type sensor ie temperature, humidity. i also have the recepticles for these that work well with arduino's. recepticle has two wires, gnd and onewire.

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