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Need help with ADC Port of Pixhawk 4

Posted by MR on March 25, 2019 at 7:52am

Hello everyone,

i want to connect an external force sensor to my pixhawk 4 to log force data.
My force sensor delivers a voltage and i thought i could use the "cap & adc in" - port of my pixhawk to connect the force sensor to and get digital data from the analogue voltage signal.

1. Question: Could this work?

2. Also, I didn't find detailed information on the ADC port of pixhawk 4 itself, something like its resolution. Can anybody point me in a good direction?

Any help is highly appreciated, thank you in advance!

Max

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Replies

  • MR April 4, 2019 at 12:34am

    Hello Thomas,

    thank you for your answer! The hint with the microcontroller helped a lot!

    Cheers,

    Max



    Thomas Butler said:

    The Pixhawk uses the STM32F4xx CPU/microcontroller by ST. See info on the 12 bit ADC in the datasheet here. The ADC  input voltage is up to VREF which is typically 3.3V. There is also the air pressure ADC at 6.6V max. Just Google Pixhawk ADC, Loads of info out there...good luck!

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