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Thread: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

  1. Exclamation PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    My PhantomX Reactor Robot Arm has all red LEDs flashing on the servos and green LED on power supply flashing and I cannot talk to the arm via Arduino. Things used to work fine and I expect the Arbotix-M board is not working, maybe it needs a reset? I tried power cycles and let things cool down over night (it was never hot but just in case) and the arm worked find before so its not a tension issue or heat issue.

    I removed the wire from the Artbox-M to the first servo and the flashing on the power supply stopped. I then moved each wire one by one to see if any servos were bad and it did not matter as once any servo was attached the flashing resumed.

    Has someone has seen this before? Is there a way to reset something? (I did push the reset button on the Artbox-M and held it down for 30 seconds all that stuff too).

    Thanks!

  2. #2

    Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    Red flashing on Servos is usually an indicator of some form of error.

    When you say you can not talk to Arm, have you tried simple query packet to the different servos.
    For example in cases like this I would try to read Address 0x11 to get the Alarm LED bits to get an idea of what the error is.
    And likewise Address 12 to get the shutdown status...

    You might try some of the Standard Robotis programs.

    I often use my own hacked up test program: https://github.com/KurtE/AX12_Test
    But it relies on being setup to use my updated version of the Arbotix libraries. Also relies on my BioloidSerial class, which is also up on github.

    Other things I would test, include:

    Use a meter and check the voltage coming out of your power supply, to see if you are still getting 12V. I would also probably check some places on the board to make sure you are getting +5v and 3.3v... Would also check power/GND pins on the AX12 buss to make sure 12v. Would check servo wires to make sure there is no obvious place it got pinched, which caused short. Would check resistance on Servo wires to make sure no dead short.

    Can you reprogram your Arbotix-m?

    Do you have a spare servo to plug in and try? Does it blink Red as well?

  3. Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    I read through your ideas and I got the arm to fire up (!). I took out the wires going from the first servo and just keep the one coming in from the Arb. I waited a few minutes and things corrected.

    Next I will check all the wires my guess is I can trace that down. Thanks for moving me a long, I think I did not wait long enough between power cycles when I tested the wires yesterday, it takes a few seconds for things to clear up.

    Just a note but its hard to get wires/servos in the Rector so I ordered Pincher too today as it looks easier to work with during development it as its seems more open and then maybe when closer to production go to the Reactor, just some feedback no complaints. The Reactor is very strong which is why I started there.

  4. Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    My custom software will now talk to the arm but Reactor Test does not see the servos. Still debugging, one wire may have been loose not sure yet. The arm is erratic when it powers own too.

    I am going to see if I can get https://github.com/KurtE/AX12_Test to help next. Just FYI in case someone else gets the same error I did (all leds flashing including the green one on the power supply)

  5. Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    Hi Kurt, ax12Serial.h is not easy to find, it seems to be one of your own files?

  6. #6

    Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing


  7. Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    Thanks, I rushed past it (looked in Kurts_AX12_Test_Use_Serial and moved on too fast). I think I am getting frustrated and rushing.

    Anyway, and I need a break , but I took nearly the entire arm apart to get at all the servos and I just cannot get the basic apps to see them by directly connecting to them per the Learn tutorials. Like AXSimpleTest, and followed the initial directions. I had someone else review the wires also -- they said it looks good. Going on Day 3 with this tomorrow.

    Could it be the controller? I did order a new controller, and a different arm (Pincher). Maybe I should just wait for that to arrive, but I hate to waste this nice Reactor. I want to get it going again. I did not check the voltages yet either, still my todo.

  8. Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    Kurt, I just noticed I am using your code extensively (interbox armlink serial), just saw your name in the header. Great to see.

  9. Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    update: the robot fired up this AM and seem to work just fine, partially assembled, then it stopped again. Maybe I bumped something, not sure yet. Since then I ran the KurtE test software (thanks) and nothing is found on the arm (cmds 4, 5 and 9 return -1 and/or FFs). I the power supply is coming with 12.4v dc, the 3x 3-Pin DYNAMIXEL Ports (TTL) is 12v dc, D23 is 4.7v so power seems fine. Tested the cables again seem ok. Just an update as I am going to chat with a support person today too. There must be something subtle I am just missing.

  10. #10
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    Re: PhantomX Reactor Robot Arm has all red LEDs on the servos and green LED on power supply flashing

    How large is the power supply? 12V 5A or 12V 10A? The fact that the LED on the power brick itself starts flashing indicates the issue is something power related. Do the same servos work with another 12V power supply (rated at least 3A)?
    Please pardon the pedantry... and the profanity... and the convoluted speech pattern...
    "You have failed me, Brain!"
    bleh

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