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    Recommended wire to use

    For discussion of DIY weather equipment - sensors, accessories, improvements to existing kit etc
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    Posts: 1
    Joined: Sun 12 Nov 2017 11:23 am
    Weather Station: WMR300
    Operating System: RaspberryPi

    Recommended wire to use

    Post by stuee123 » Sun 12 Nov 2017 11:32 am

    Hi, im making a Rpi station including uv, luminance, soil temp
    What im after information on is what would be the best cable to use for them as they would be no longer than 10m from the Rpi unit.

    any info is greatly appreciated.


    Posts: 1061
    Joined: Sat 26 Feb 2011 1:58 pm
    Weather Station: Fine Offset 1080/1 & 3080
    Operating System: Windows XP SP3
    Location: SE London

    Re: Recommended wire to use

    Post by AllyCat » Mon 13 Nov 2017 9:36 pm


    Welcome to the forum. Are your sensors Analogue or Digital (e.g. I2C data bus) ?

    10 metres it getting rather long for I2C (but possible). If analogue, what are the typical signal amplitudes and source impedance? How many cores do you need in each cable run (signal, power lines, earth, etc.)?

    The choice might be between CAT5 (4 x twisted pairs) network cable or some form of screened coaxial cable. In either case the first criterion might be that it should be an "outdoor" (e.g. UV-resistant) grade.

    Cheers, Alan.

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