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  • Will you need pull up resistors to get the DS18B20 working reliably with the pi?

    Also, why not do it wirelessly? You can get a decent WiFi Dev board for less than a fiver now days. I know that's another £50 down but surely worth it for no cables?

  • I always wire them like this and that works a treat. I believe you can power OneWire devices off of the data line, but I never really got it to work and it wasn't worth the hassle for me.

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