Extended Shield readings – No voltage source connected

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  • January 1, 2016 at 9:31 pm #1367
    Kishore
    Participant

    Hello,

    I purchased LTC1859 shield and evaluating with Arduino Uno board. No voltage source is connected to the ADC shield. I am running ExtendedADCShieldDemo.ino script and I am watching serial monitor. I see the following readngs:

    2.58217 0.00000 0.00000 2.58248 2.58309 -0.00122

    The three numbers that are close to “0.0000” makes sense because no voltage source is connected. But I am not sure why I am seeing close to “2.582” on three other channels.

    I connected voltage source and tested the three channels that show “0.000” and these channels read the voltages very accurate.

    Can you help understand what could be causing the issue and I am seeing close to “2.582” when nothing is connected on those channels?

    Thanks
    Kishore

    November 10, 2016 at 5:05 pm #2329
    jlizhg
    Participant

    Where I can download the startup file for the card LTC1859 ? Thanks a lot.

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