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HDC1000EVM reliability issue

I have three HDC1000EVM's from Digi-Key.  One works fine.  The second fails to communicate via the USB connector.  The third has a -40C and 100% humidity reading constantly.  I am using a Windows XP desktop with the HDC1000EVM GUI 0.0.1.5 software downloaded from TI.com.  When the good unit is plugged back into the same USB connector as the other two, it again works just fine.  There seems to be an issue with the EVM module manufacturing....

  • Hi Robert

    Regarding the third board is probably a I2C communication issue. What you see on the I2C line are all zeros.

    Our HDC1000EVM are tested before the shipment and I would like to investigate better.
    Could you please write directly to my address: m-mascotto@ti.com

    Regards
    Massimo