The i2c temperature sensor precision

Discussion in 'UDOO NEO' started by Francis Augusto Medeiros, Sep 25, 2016.

  1. Francis Augusto Medeiros

    Francis Augusto Medeiros New Member

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    Hi there,

    I have connected the i2c temp sensor to my Udoo Neo, and read it on linux.
    Is there a way to get more precise readings? Mine is only on multiple of "500". (22500 for 22,5, for example).

    I read on the sensor's website that "The TMP75B is capable of reading temperatures with a resolution of 0.0625°C".

    Cheers,

    Francis
     
  2. waltervl

    waltervl UDOOer

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    I am not an I2C expert but in the datasheet I can see an resolution register so that has the be set with python smbus or equal.
    But in the same datasheet it is also stated that the accuracy of the sensor is +/- 0.5 so it won't help you a lot to set the resolution higher.
     

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