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How to send empty message from js to ros

asked 2016-11-28 14:51:07 -0600

Saif Alabachi
26 ●4 ●5 ●5

I'm trying to use roslibjs and I want to try to send std_msgs/Empty for take_off or land, I tried to send like

takeOff.publish('std_msgs/Empty');

but I receive an error about missing the field

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answered 2016-11-28 15:57:09 -0600

Saif Alabachi
26 ●4 ●5 ●5

Thank you, i figure it out, it is only

takeOff.publish();

Because it is empty message!

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Comments

I would actually recommend to use a Service with the std_srvs/Trigger type. That communicates intent in a much more explicit way than std_msgs/Empty.

gvdhoorn ( 2016-11-29 02:14:57 -0600 )edit

-1

answered 2016-11-28 15:42:24 -0600

31 ●3 ●5 ●7

try with a std_msgs/String

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Asked: 2016-11-28 14:51:07 -0600

Seen: 464 times

Last updated: Nov 28 '16

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