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    BME 280 hardware review

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    BME 280 hardware review

    Good Evening.,

     There is a voltage drop of 0.2v across the data and clock pin of the BME280 in our design and we took the reference from datasheet. In our schematic VDD pin and vDDIO pin uses same DC power supply. But in datasheet it is mentioned that vDD pin is analog and vDDIO is for digital interface. So, want know whether the design is good or need some suggestions from your team. Or, is it ok to leave the vDD pin floating and use vDDIO for interafce as well as supply.BME280.JPG

    And i've added the schematics image for your reference. I'm looking forward on your reply ASAP!

    Thanking You.

    2 REPLIES 2
    Community Moderator

    Re: BME 280 hardware review

    Both VDD and VDDIO must be supplied for the sensor to operate, but it is fine to have them supplied from the same source. Based on your system/requirements you may want to double-check your pull-up resistors values (based on interface timing and bus load) , but your schematic looks correct and follows our recommendations. 

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    Re: BME 280 hardware review

    Thank you very much., there was a small bug in our hardware. It is fixed and now the BME 280 is working.

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