Posted: Thu Feb 09, 2012 7:25 pm Post subject: Dyanmixel Issue
So I was recently handed two broken bioloids. One was slightly responsive, but would not respond properly to code. After getting some advice, I took it apart, recovered the firmware on each dynamixel and rebuilt the robot. It works great now!
Anyway, my first thought, obviously, was to do the same thing with the other. But I'm running into this problem with the dynamixel wizard. Half of the dynamixels aren't being recognized at all when I go to recover firmware, and the other half give me the option to recover the firmware for AX-12A, but they're all AX-12+. I don't know why that is not presenting as an option, as it did with the last rebuild.
I don't think it should be an issue to recover the firmware with the AX-12A firmware. I don't know if it will work but if it doesn't you can always revert to some other firmware (flashing a firmware doesn't overwrite the bootloader ie it doesn't overwrite the capability to do further updates to the firmware).
With regards to the servos that are not responding, I'm afraid the canches for recovery are limited.
I would re check that the cables and power supply are OK. The Dyanmixel 3 pin cables sometimes "seem" ok but aren't working properly. I would try another cable.
The bootloader should always be intact on all servos regardless of whatever firmware you write on them; if you're not being able to enter the bootloader it may mean the processor or board are damaged.
Have you tried running the Dynamixel Wizard on these servos and see if they useful diagnostic info?
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