POST No. 2406929
Darwin OP2 back interface board LED status.
2018-08-10 05:04:38 DoubleB


Sometime when I turn on my OP2, his Rx LED always ON when demo, and the system crash, need to reboot until Rx is OFF.

How can I solve this problem ?


2018-08-10 05:04:38
2018-08-10 09:20:26 Will Son


Thank you for inquiry.

I'll collect more information and return to you.

FYI, did you know that there's ROS packages for OP2 now?

If you are interested, you can try it by following the manual.


Any questions/issues regarding OP2 can be answered from GitHub Issue page.


Thank you for your patience.

2018-08-10 09:20:26
2018-08-14 14:29:58 Will Son


Did you connect monitor when booting OP2?

If possible, please take a video and share it with us.

Also, how did you find out that the system crash?

2018-08-14 14:29:58
2018-08-17 17:19:46 DoubleB

Hi Will Son

Sorry for reply late !!

I think I need to correct the problem.

The system not crash, just demo cannot run, it's always show the Segmentation fault (core dumped) error, and Rx ON.

Need to reboot OP2 until Rx OFF.

Only have one photo, hope this can help you ~ thanks.

2018-08-17 17:19:46
2018-08-23 17:07:46 Will Son


Thank you for uploading the picture.

Our engineer mentioned that this seems like modified source code, and if you are getting Segmentation fault error, you'll need to debug the custom code.

If you want to restore the OP2 source code, please follow the procedure below.

1. Delete all files in the robotis folder

    $ rm - rf /robotis/*

2. Download the OP2 source code

    $ cd /robotis

    $ svn co https://svn.code.sf.net/p/darwinop/code/trunk/robotisop2 .

3. Build the source code and test the demo

    $ cd /robotis/Linux/project/demo

    $ make

    $ sudo ./demo

Please let us know if above method doesn't work for you.

In that case, I can think of an issue with the hardware.

Thank you.

2018-08-23 17:07:46
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