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luxai-qtrobot / QA

Virtual repository for Questions & Answers system
http://luxai-qtrobot.github.io
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Unable to communicate with master #49

Closed aerith-zkelov closed 2 years ago

aerith-zkelov commented 2 years ago

Hi, I'd like to ask a question on this issue I faced. I've been working with QTRobot using my laptop via ssh for quite some time now. However, today I tried to work directly with the QTPC and I tried to run a simple command and got this issue. May I know what may be causing this?

qtrobot@QTPC:~$ rosservice call /qt_robot/speech/say "message: 'Hello.'" ERROR: Unable to communicate with master!

codionysus commented 2 years ago

HI @aerith-zkelov Can you ping QTRP from QTPC? Sometimes the problem happens when QTrobot is not powered off correctly and QTRP losses connection to QTPC. You can try powering the QTrobot off and when is completely off unplug it and plug it back on.

aerith-zkelov commented 2 years ago

That worked thanks. And another question, I cloned tutorial files from the Github and encountered this issue when i tried to build the workspace, may i know what's causing it? Screenshot from 2021-09-13 18-16-53

codionysus commented 2 years ago

Entire tutorial repo can't be build on QTPC, some of the stuff is just for QTRP. As I can see from your log you have issue with motors_custom_controller that is just for QTRP. Copy just the example or demo that you need to catkin_ws on QTPC and try to build it

aerith-zkelov commented 2 years ago

I see thank you for the clarification