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2015-04-22 15:40:31 -0500 | commented answer | raspberry pi with ROS Indigo ( or any new Release of ROS) Fine, this will simplify the life a lot :) |
2015-04-19 17:48:38 -0500 | commented answer | raspberry pi with ROS Indigo ( or any new Release of ROS) It should be a better option anyway, since ROS was a bit sluggish on the RasPi. Having several core can help. Not yet tested. |
2015-04-19 15:22:05 -0500 | commented answer | raspberry pi with ROS Indigo ( or any new Release of ROS) @MattHoward Sorry it couldn't help you more :/ Which error do you encounter exactly ? The same dependency as I got, or something else ? |
2015-04-18 04:32:02 -0500 | commented answer | raspberry pi with ROS Indigo ( or any new Release of ROS) @MattHoward I successfully managed to finalize the process, and get a working environment. It's documented (with all console traces) here : http://www.pobot.org/ROS-sur-Raspberr... Sorry for this, it's written in French. But Google Translate can help, and traces are in English ;) |
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2015-01-13 01:18:24 -0500 | commented answer | Best choice for controlling GPIOs (published messages or service calls) Thanks Dan for you quick reply. You confirm what I had concluded from studying existing material. The very last point was also something I had in mind. Regards. |
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2015-01-12 15:19:52 -0500 | asked a question | Best choice for controlling GPIOs (published messages or service calls) Hello, Sorry if this is an already answered question, but despite a couple of hours spent googling the Web and searching in this forum, I couldn't find. What is the rule of thumb for deciding if some control operation should be implemented using published messages or service calls ? For controlling robot moves, I could see that the standard way is to use Since there is no feedback when using messages (you can't know if somebody heard them and process them), I would be tempted to use service calls instead. Thanks in advance for any advice. Best regards. Eric |
2015-01-12 14:55:37 -0500 | commented answer | How to write a motor controller driver? Hello, I was just about doing the same thing. Do you plan to publish your work ? Using Twist messages sounds fine for a differential robot powered by the RoboClaw, but what about using it as a 2 independent motors controller ? Twist messages don't make that much sense here. What would you use ? |
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2014-12-22 04:16:38 -0500 | answered a question | Announce ROS master by zeroconf Hello, If your target is Linux based, you can use If you need the IP, the command An alternative to the grep approach is to publish a service on the target side using This solution is independent from ROS and can be exploited in startup scripts, both on target an client sides. I've used it with success in a lot of various situations involving headless Linux based black boxes, including Raspberry ones. Hope this helps Regards, Eric |
2014-11-03 15:29:39 -0500 | commented answer | raspberry pi with ROS Indigo ( or any new Release of ROS) @awilson I couldn't find any doc on the meaning of the |
2014-11-03 02:30:38 -0500 | commented answer | raspberry pi with ROS Indigo ( or any new Release of ROS) @awilson Thanks a lot for your quick reply. I could bypass the problem by removing the "python:any" dependencies in /var/lib/dpkg/status and the whole process went fine. I'm installing the basic ros_comm variant. Could it be some change in the ubuntu repo the "python:any" depends clause points to? |
2014-11-02 15:51:53 -0500 | commented answer | raspberry pi with ROS Indigo ( or any new Release of ROS) I followed it, and it works fine until step 2.2.2 (rosdep install). It fails installing python-catkin-pkg and thus dependants, saying : "python-catkin-pkg : Depends: python:any (>= 2.7.1-0ubuntu2) but it is not installable" Of course Python is here (2.6, 2.7.3 and 3). Thanks in advance for any clue. |