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Thread: 1 hexabot leg not responding (Phoenix Code)

  1. 1 hexabot leg not responding (Phoenix Code)

    I have just put together a PhantomX AX Mark III hexapod and installed the Phoenix Code from

    When I run the Phoenix code it responds to the controller and I can use the left joystick to walk etc. The problem is my left front coxa servo does not respond. I know it's hooked up correctly because all servos respond correctly when I run the HexapodTest sketch.

    The only change I made to the code was to change the DEFAULT_GAIT_SPEED in Hex_Cfg.h to 40 for my AX-18a servos. I had this issue before and after this change.

    When it's powered I can move the left front coxa by hand. It resists a little, but not much. Like it would during the HexapodTest when commanded to relax. All other servos are rigid.

    I also tried commanding each leg individually in single leg mode. All legs work fine except again, the left front coxa.

    Thank you for any help you can provide. I will continue reading through the code to see if I can figure anything out.

  2. Re: 1 hexabot leg not responding (Phoenix Code)

    I found the problem...

    In Hex_Cfg.h there is:
    #ifdef OPT_CHECK_SERVO_RESET // Try to find single servo that reset it's ID...
    #define cLFCoxaPin 19 //Front Left leg Hip Horizontal - Avoid servo 1
    #define cLFCoxaPin 1 //Front Left leg Hip Horizontal

    I just had to comment out where OPT_CHECK_SERVO_RESET was defined

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