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Questions tagged [linux]

Linux is an open source, UNIX-like operating system available for a variety of platforms, including a number of embedded hardware for robotics and other applications.

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LQR Controller in Raspberry Pi C++ [closed]

I am a newbie in Raspberry Pi and I don't know anything about Ubuntu, or ARM, etc. so please be patient in answering me and please, please guide me step by step. But I know how to run codes in C++ ...
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1answer
21 views

Talking to a Flask Webserver from a Commandline

Have a bunch of work in setting up a flask webserver to control a robot from an app, and I'm not too pleased with the results for driving. Touch sensitivity issues are driving me nuts, and looking to ...
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1answer
308 views

This script require root privileges! | what is going on ?

I run the following command to install GeographicLib datasets for mavros inside the catkin_ws directory (catkin workspace). ...
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0answers
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Is it possible to connect ev3dev running Lego EV3 block to connect to Linux bluetooth in a serial-like connection?

Such, that you can use cat "hello" > /dev/rfcomm0 and the device receives "hello" ?
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3answers
2k views

catkin_make unable to build and throws “Makefile:138: recipe for target 'all' failed make: *** [all] Error 2 Invoking ”make -j4 -l4“ failed”

I have been trying to build my ROS workspace using catkin_make, where i have cloned a repo/PACKAGE. I tried many of the things mentioned in previous answers to questions similar to my issue but ...
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1answer
86 views

Is it good idea to build robots with Android OS?

I know Android uses Linux kernel. And nowadays processors going to be more powerful and robots going to be more interactive with graphical user interface and Android is good in this field. So, is it ...
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2answers
71 views

finding the frequency of CAN send and CAN receive messages using CAN in Ubuntu

Can anyone please share me the command how can i find the frequency of CAN send and CAN receive messages. I'm sending CAN messages using a serial port and receiving it with a peak CAN usb. There is no ...
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5answers
3k views

Programming Inverse Kinematics in C++

I want to write my own kinematics library for my project in C++. I do understand that there are a handful of libraries like RL (Robotics Library) and ROS with inverse kinematics solvers. But for my ...
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1answer
295 views

ROS Installation Error : ARCH LINUX

So I had this old lappy on which I used to play with ROS a lot then it got broken so I bought a new one and installed the same distro as that of old one i.e. arch linux. Now when I am installing the ...
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3answers
1k views

What are the prerequisites for learning ROS?

It is helpful in robotics to first learn about "Linux kernel development" or "device driver development in Linux" before I start learning ROS? I know C and JAVA! In brief, I want to know any ...
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1answer
1k views

How to compile arm compatible binary from an x86 precompiled library on a pc host to be run on an arm target? [closed]

I am using a library precompiled on x86 on my pc (x86_64). Does there exist any toolchain to compile the x86 library and in the end generate an executable for armv7l ubuntu?
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2answers
601 views

Sending commands from Ubuntu

I have a iRobot Create model 4400 and I need to send commands to the open interface through Ubuntu. I'm using gtkterm at 57600 baud but when I press play button, it only drives around itself. I have ...
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3answers
2k views

How to connect ethernet based Hokuyo scanner?

This is a very basic beginner question, I know, but I am having trouble connecting to the Hokuyo UST-10LX sensor and haven't really found much in terms of helpful documentation online. I tried ...
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1answer
642 views

beaglebone black doesn't autoboot when powered over jack or vdd pins

I have a BBB and it works quite well however when I power it over the Barrel connector or over the vdd pins rather then use the usb connection it doesn't automatically boot. When I put the barrel ...
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4answers
973 views

language to code Beaglebone [closed]

I'm trying to build a hexapod with beaglebone in the linux environment (Im thinking of using Ubuntu). What is the best language to use for coding purpose to make robot controls, camera and wifi ...
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1answer
202 views

Getting started with Jetson Tegra K1 [closed]

After working for a long time on my Arduino Due, I needed a better and more powerful prototyping platform for my future projects. For which, I have placed an order for NVIDIA Jetson Tegra K1 board ...
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1answer
212 views

Ubuntu ARM lacking /sys/devices/cape-bone-iio

I'm trying to pull analog input from a beaglebone black using this tutorial. However when I go to /sys/devices there is no ...
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3answers
558 views

Connect to video stream with Java app instead of console and mplayer [closed]

I'm building a quadcopter using Raspberry Pi. There is the Pi Camera connected to the Raspberry Pi which is streaming the captured video. I can connect to this stream via Wi-Fi on my notebook (Linux) ...
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0answers
59 views

Directional hearing for Linux robot?

I want to give my Linux robot the ability to locate a sound source and drive towards it. I am reading a paper on sound localization that seems to cover the theory well enough, but I'm at a loss as to ...
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4answers
265 views

Voice control solution for Linux robot? [closed]

I wanted to present a voice-controlled robot in my lab's upcoming demo contest. My robot is essentially a x86 Ubuntu notebook resting on top of a two-wheeled platform, so in principle any solution ...