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  • Robot Mesh bugs

    While working on my latest VEX IQ project (http://www.vexiqforum.com/forum/main...44-svg-painter) i found some strange behavoir in Robot Mesh Studio API:

    1) All motor run and run_xxx methods provide "hold" parameter, which is un-usable. May be I use it wrongly, but motor enter hold mode anyway independed of "hold" parameter value. Is this a bug?

    2) I use the following procedure to find "zero position" in my robot:

    m.set_max_current(15)
    m.run(-100)
    while not m.stalled():
    pass
    sys.sleep(0.2)

    m.reset_position()
    m.run_until_position(100, corr, True)
    sys.sleep(0.2)

    m.reset_position()


    where the "corr" variable is some predefined correction angle. I feel that the above code is equivalent to the following:

    m.set_max_current(15)
    m.run(-100)
    while not m.stalled():
    pass
    sys.sleep(0.2)

    m.run_until(100, corr, True) # Now I use relative distance without reset
    sys.sleep(0.2)

    m.reset_position()

    But, in practice, second (relative) version works not stable as opposedto the first one. May be someone can explain why? What is the difference between these two code fragments? May be "reset_position" is a long method which use some sort of averaging?..

    Btw, because of this issue, I can't switch to "raw" methods, because there no run_raw_to_position and run_raw_until_position methods...


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