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  1. #1
    Senior Member chuckieboy's Avatar
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    Default temperature sensor

    I want to be able to monitor 2 DS18B20 temperature sensor’s at the same time and send the data out through top the serial port. The serial port code is covered. I’m just struggling with the DS18B20
    I’ve got one DS1820 and DD18B20 which I have been playing around with the sample code and got the DS1820 working, Now for the next stage I’ve ordered a couple of the DS18B20 has I only have one DS18B20 of these plus the fact they are half the price of the DS1820. So I thought while they are coming I’d ask some questions

    Q1. Is it possible to read 2 DS18b20’S at the same time
    Q2. Can they share the same pins or can I use 2 pins

    I have searched the forum and got the DS18B20 working to a fashion but I’m unable how to work out how to get it to read below 0 degrees and read two at the same time. Like always I struggle and get by most of the time but come stuck sometimes and end up shelving it.
    Which would be the best way to get it read below 0 degrees and read 2 sensors at the same time has at the moment I’m at a total loss how to do it.

    Thanks
    Steve

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  • #2
    jamachine
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    Default Re: temperature sensor

    http://www.picbasic.org/forum/showth...ghlight=ds1820 go there as far as multiples on the same bus they all have 64 bit addresses
    you will just have to write alittle code to get in there

    Stan

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    pverburg
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    Default Re: temperature sensor

    let me know how you go Steve.

    I'm running 4 on one wire here for the last couple of years works well.
    If you show me where you get stuck I can give you a hand.

    Paul V.

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    Senior Member chuckieboy's Avatar
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    Default Re: temperature sensor

    Thanks Stan I shall have a look there this should be help

    Thanks for the offer paul I will see how I get on over the next couple of days and be in touch if needed

    Thanks
    Steve

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