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M
mars-ic
Associate
July 11, 2025
Question

stlink-V3pwr and X-NUCLEO-LPMO01A inconsistent & inaccurate current readings

  • July 11, 2025
  • 2 replies
  • 375 views

stlink-V3pwr current ：  21mA 

X-NUCLEO-LPMO01A current ：17mA 

actual  current ： 15mA 

2 replies

TDK
TDK
Super User
July 11, 2025

Consider providing more information on why you think the spikes indicate a bug.

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    Andrew Neil
    Andrew Neil
    Super User
    July 11, 2025
    @mars-ic wrote:

    stlink-V3pwr current ：  21mA 

    X-NUCLEO-LPMO01A current ：17mA 

    Are you sure that these are measuring the exact same pulses?

     

    @mars-ic wrote:

    actual  current ： 15mA 

    How do you measure that?

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
    M
    mars-icAuthor
    Associate
    July 12, 2025

    1、Same hardware and software。
    2、will Compare the measurement data of DMM6510(Keithley DMM6500 6.5 Digit Multimeter with Graphical Touchscreen)

    Andrew Neil
    Andrew Neil
    Super User
    July 14, 2025
    @mars-ic wrote:

    1、Same hardware and software。

    But were they at the same time ?

     

    @mars-ic wrote:

    2、will Compare the measurement data of DMM6510 (Keithley DMM6500 6.5 Digit Multimeter with Graphical Touchscreen)

    Do you mean DAQ6510 - this: https://www.tek.com/en/products/keithley/digital-multimeter/keithley-daq6510 ?

    Are you sure that has the necessary time resolution for such short pulses?

    A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
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