joaocandre's profile - activity

When printing/logging messages with ROS_DEBUG there is no output on stdout/stderr, despite launching a node with output="screen". On the other hand, ROS_INFO, ROS_WARN and ROS_ERROR (along with their variants) work as intended, printing the message to the console.

Looking into ROS logging documentation, debug messages should be printed by default, while warning and error message shouldn't. In additions, nothing is printed to logfiles.

How do I go about fixing this?

No DEBUG messages on stdout/stderr When printing/logging messages with ROS_DEBUG there is no output on stdout/stderr, de

No DEBUG messages on stdout/stderr When printing/logging messages with ROS_DEBUG there is no output on stdout/stderr, de

Instantiating NodeHandle does not initialize a new node though, just a handle to perform ROS operations. So the node dia

Instantiating NodeHandle does not initialize a new node though, just a handle to perform ROS operations. So the node dia

Common usage of NodeHandle? When developing classes that provide ROS-specific functionality, what is the recommended app

What would be the best approach to synchronize two ROS2 nodes (i.e. a common shared clock/time) on two different machines, connected over a wireless network?

At present I've implemented a third node on one of the machines providing a clock, but apparently there is a slight delay/latency of 5-20ms on the other machine, which is variable, and thus hinders the accuracy of time readings.

Is this delay caused/affected by ROS or solely by the network configuration? Is there any tool built into ROS that can help with precise syncrhonization?

I'm indeed publishing to \clock, mostly for simplicity/verbosity, but what exactly would be the difference in using a di

I'll check ntp and chrony, they seem to be what I'm looking for. My particular setup involves a Raspberry Pi acting as a

Synchronizing different nodes on different machines What would be the best approach to synchronize two ROS2 nodes (i.e.

Multiple NodeHandle instances vs shared NodeHandle Conceptually, when writing a C++ node wherein several classes are ins

Most efficient way to save Images to file? I'm trying to save both RGB and Depth images from a camera stream, however us

Unfortunately it is not my package and I would like to avoid directly changing anything in it, including its launch file

Redirectign output of included launch file Is it possible to redirect the output of a node launched through a separate l

How large are Subscriber/Publisher/ServiceServer instances? I'm writing a wrapper class that advertises several topics a

In my particular implementation using typed callbacks, I am declaring multiple ros::ServiceServer objects as members of

In my paticular implementation using typed callbacks, I am declaring multiple ros::ServiceServer objects as members of m

15-20 services in total. The callbacks and their instantiation are part of a "ROS wrapper" class - each service routine

Is passing an extra unused parameter/message to a callback good practice? I'm writing a node that advertises several (15

Unable to load controller spawner node For some reason controller_manager isn't able to run a spawner node. If I use a l