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2019-04-08 01:06:24 -0500 marked best answer What's a good stepper motor to use with ROS?

I'm looking for a stepper motor w/encoder that works with ROS. Does anyone know of a good one that has documentation about how to use it with ROS?

Thanks in advance.

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2018-12-26 12:22:58 -0500 commented question Turn on/off node on events

neural network. but then not do any forward passes until a flag is triggered.

2018-12-26 12:22:27 -0500 commented question Turn on/off node on events

Thanks for the comments. The node does use a lot of resources which is why I want to shut it down. I ended up using the

2018-12-26 12:18:40 -0500 answered a question How to save video stream ?

I would use OpenCV to write video and then use the recording to run simulations later. But we probably need more info on

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2018-12-23 12:13:12 -0500 edited question Turn on/off node on events

Turn on/off node on events I am working on a program that activates Yolo object detection if there is movement. Then it

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2018-12-23 12:03:54 -0500 asked a question Turn on/off node on events

Turn on/off node on events I am working no a program that activates Yolo object detection is there is movement. Then it

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2018-10-02 16:07:12 -0500 commented answer Spherical Joint in URDF

Those joints don’t move like a ball joint though. They move from a point below. How do I set the center of rotation in

2018-10-02 09:45:32 -0500 asked a question Spherical Joint in URDF

Spherical Joint in URDF I have the following URDF. I striped out the meshes for this post. Does anyone know how to make

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2018-01-10 15:20:55 -0500 commented question What's a good stepper motor to use with ROS?

I’m building a robot arm. I want to be able to get positional feedback like I can win the dynamixel servos. What’s good

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2018-01-10 10:38:04 -0500 asked a question What's a good stepper motor to use with ROS?

What's a good stepper motor to use with ROS? I'm looking for a stepper motor w/encoder that works with ROS. Does anyone

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2016-10-20 12:10:39 -0500 commented question Turtlebot Starts Path But Stops

This seems to have been solved by syncing the clock on my turtlebot's computer with the clock on my workstation. Syncing them both to a external clock did not work properly.

2016-10-19 23:04:15 -0500 commented question Turtlebot Starts Path But Stops

I synced the clocks again and AIML nav was working temporarily. But then the clocks stopped syncing again.

2016-10-19 21:57:54 -0500 asked a question Turtlebot Starts Path But Stops

My Turtlebot is able to localize and then start navigating to a desired point. But a second after it starts it gets lost and I start getting erros like this: Could not get robot pose, cancelling reconfiguration Extrapolation Error looking up robot pose: Lookup would require extrapolation at time 1476932209.270778684, but only time 1476932209.576979391 is in the buffer, when looking up transform from frame to frame I synced the clocks of my 2 machines. Any idea what the problem could be?

2016-10-19 21:34:10 -0500 commented question Why isn't my complete map saving when I do Teleoperation with turtlebot?

I actually figure it out. The problems were that the map dimension params were set to be too small and that I was moving the robot too fast. If I let it sit for few seconds it mapped fine. But my new problem is that when I start AIML using RVIZ for autonomous navigation it isn't working to great.

2016-10-19 10:08:35 -0500 commented question Why isn't my complete map saving when I do Teleoperation with turtlebot?

I am using gmapping slam_gmapping and rosrun map_server map_saver. The saved map has only part of my apartment. The saved part is the largest room in my house. The rest of the house (Hallway, kitchen) are missing.

2016-10-16 06:17:46 -0500 asked a question Why isn't my complete map saving when I do Teleoperation with turtlebot?

I have been trying to build a map of my apartment using my Teleoperation with a turtlebot 2. The map seems to look fine on rviz initially but when I save and try to use it with autonomous nav the map is incomplete. It seems to be missing the narrower parts of my apartment like my hallway and kitchen.