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Questions tagged [communication]

means of sending messages, orders, etc., through the transmission media like air, conductor. ...

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3answers
60 views

Data saving/sharing standards for objects, actions and senses

I am working on a language (computer language) for robotics to communicate with each other. I am looking for naming standards that is unique and usable for robotics, for example when two robots are ...
0
votes
1answer
171 views

MSP (Multiwii Serial Protocol) receiving data with pyMultiWii issue

I want to get telemetry data from my flight controller (Matek F405-CTR) and send control commands to it via MSP protocol. I've already configured UART3 port on Matek in Inav configurator (look at pic)...
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0answers
21 views

Communication between stm32f4 and rpi

I am performing a digital signal processing of the ECG signal in the DSP of an stm32f4 and I need to send the features extracted to a raspberry pi , what type of communication should I use . Having , ...
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0answers
58 views

MATLAB ROS Communication Issue: The following nodes should be connected but aren't

I have both MATLAB and ROS installed on a SINGLE Linux machine. I am trying to publish data from MATLAB over a rostopic and echoing it in the terminal to view it. No matter, however, I play with URIs ...
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0answers
48 views

Connect Multiple Drones with ground computer over wifi

I want to control Multiple UAVs with Qgroundcontrol (similar to this simulation) over wifi. For single drone control, I can connect my pc to the wifi of a drone but I can't change to select other UAVs ...
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0answers
17 views

WPI NetworkTables communication

"Network Tables" refers to a software-distributed dictionary module implemented by the WPI libraries for First Robotics communication, with a hierarchical key-value pair style syntax. The roboRio is ...
2
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1answer
46 views

How do robotics companies track faults in production systems?

Are there any specific tools or practices which robotics companies use in order to keep track of errors in: Sensors/Actuators malfunctioning or returning unexpected results Programming errors or ...
0
votes
1answer
43 views

Doppler effect in long distance communication using 868MHz band for telemetry signals

I am working on a project which involves multiple quadcopters working about 5 km away from the ground control station. The communication is planned to be done using RFD868+ modules on each of the ...
3
votes
1answer
40 views

Communication between Intel Edison and Open Mv7

I'm trying to do a simple communication between an Intel Edison and Open Mv 7 Camera through UART (Tx/Rx). I assumed this would be a simple task but both sides receive "�". Both are using python, the ...
1
vote
1answer
63 views

How to update the cartesian target when the robotic arm has a communication delay?

My robot system uses a 3D mouse to teleoperate the robotic arm's TCP. The robot returns its TCP's position every 10-20 milliseconds to the remote PC. The remote PC returns the new destination based on ...
1
vote
1answer
551 views

How to receive messages from a UR10 URScript?

I've been looking at existing this UR TCP/IP communication protocol answer, the data linked but I'm still a little confused to how I could retrieve values from calculations, for example ...
0
votes
1answer
62 views

How to work with arduino softwareserial communication?

This is my first project using Bluetooth module HC-05. I am using two of these modules. One is connected to an Arduino Nano(slave) and another one is connected to an Arduino Uno(master). I have paired ...
0
votes
1answer
112 views

DX100 controller communication protocol

I have a motoman robot for use in a pick and place application. It has a DX100 controller which has an ethernet interface which could be used to control a slave device using the Modbus TCP protocol. ...
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2answers
41 views

Sensors, Methods for Finding Other Robots

If I can constrain two robots to a hypothetical box, what sensors or common formal methods exist that would enable the two robots to meet? I am specifically interested in the communication of relative ...
2
votes
0answers
109 views

EtherCAT slave sensor node [closed]

We are currently working on a project where we want to use EtherCAT as a communication protocol between a central system (master) and several nodes (slaves). We want these slaves to have the following:...
1
vote
1answer
655 views

UR3 TCP/IP communication protocol

I'm currently programming a C socket for communicating via (Ethernet) TCP/IP with an UR3 robot which control software is version 3.3. I'm able to get raw data from the ports 30001,30002, and 30003. I ...
0
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2answers
74 views

TCP Communication with PCDuino

I'm working on a robot that is controlled by an xbox controller connected to a windows computer and commands are sent to a pcduino through a tcp connection. I have it working by sending a string of 1'...
1
vote
1answer
78 views

Building a stationary robot which can talk [closed]

I am a Computer Science major and I only have basic ideas on Robotics. I am planning to build a stationary cubical AI. The main purpose of this bot will be that, it will have a sensor to check if ...
1
vote
1answer
2k views

Connecting a CC3D board with Raspberry Pi to get telemetry data

I want to get telemetry data in my Raspberry Pi that will be connected to a CC3D board either via USB cable or Serial communication. How can I get the data? I plan to have wifi communication between ...
1
vote
2answers
427 views

Establishing Data Transfer between two Raspberry Pi's using GPIO

Good day I am currently implementing an autonomous quadcopter with stereo vision using raspberry Pi. One (Let's call this Pi_1) is responsible for stereo vision the other is responsible for motor ...
0
votes
2answers
87 views

How can I control fast real time sensor (250Hz) with slow system display(60Hz)

We do some experiments of real time representation of sensor position on TV. In this experiments, we used sensors for collect real time position in 3D at 250Hz and TV for Display the sensor position ...
2
votes
2answers
534 views

Which middleware for IPC and multi-threading in a autonomous robot? [closed]

Aim: To use multi-threading and inter-process communication(IPC) when coding an autonomous robot. Platform: Embedded Linux (Yocto) Constraints : Limited CPU power. We are building an Autonomous ...
1
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1answer
563 views

Libusb and arduino communication not working

I am doing a line following robot based on opencv. I have my onboard computer(an old pandaboard) running opencv. It will calculate the offset from the required path and communicate it to the arduino ...
2
votes
1answer
436 views

How to transfer signed integers with libusb?

Folks at programmers stack exchange asked me ask here: I want to communicate with an arduino and sent integers it. I code this program in C++. I initialy used bulk_transfer(), but it sends only char ...
1
vote
1answer
80 views

Is it possible to have A/V feed and serial communication on an RF transceiver at the same time on an Arduino?

Is it possible to transmit live audio/video feed and at the same time, receive commands through UART using only 1 RF transceiver connected to the Arduino board? I want to control the Arduino through ...
1
vote
1answer
176 views

Shallow underwater wireless sensor network [closed]

I need to make shallow (max 2m) underwater wireless sensor network. Data payload is about 10kB/s. I know that VLF band (~3-30kHz)could be the best solutions for that, but cause of time-to-market I ...
2
votes
0answers
93 views

choose ZigBee modules for full wireless mesh

What is the most common ZigBee IP Modules to create full wireless mesh mode? I know that it should be 1) coordinator and 2) router to create full-mesh But I am interesting about what kind of modules ...
1
vote
2answers
2k views

Communicating between a beaglebone black and an arduino using ttyO4

I'm trying to get an arduino to talk with a beaglebone black. I have followed this tutorial for getting ttyO4 open on the BBB and used the following command on to set the serial line correctly: ...
2
votes
1answer
424 views

To control an omni wheel robot wirelessly using bluetooth and arduino

I am trying to control an omni wheel robot which has 4 motors using 2 joysticks, plus there are some actuation switches which I want to control too. I am using arduino mega and a pair of bluetooth ...
1
vote
1answer
340 views

control circuit of a humanoid robot (something like iCub or Asimo)

My friend and I are building the upper body of a humanoid robot for our M.Sc thesis project. There are 24 DC motors in this robot. The thing I want to know is what is the best way to command these ...
0
votes
1answer
41 views

Sending a smartphone's GPS wireless

I'm building camera device which is able to take pictures of paragliders in mid air. To let the camera know where the glider is I thought about using GPS data from the pilot's smartphone. My ...
2
votes
0answers
120 views

Hokuyo URG-04LX-UG01 and Mac compatibility issues

I've got my hands on this laser range scanner but seem to have some problem receiving any output from it. I can't find any guide on how to set it up on the internet, so I was wondering if it is even ...
1
vote
3answers
2k views

Why cannot we find EtherCAT shields? [closed]

I have a riddle about EtherCAT in mind and I'd like to have your point of view about it... With the rise of open platforms and hardware, and easily accessible embedded machines, it is now rather ...
1
vote
1answer
47 views

MCBL Controller through RS232

I'm trying to use the MCBL Controller by Faulhaber to control my motor. I'm trying to program some sort of driver on linux using the serial connection and libserial. But it does not seem to be working ...
0
votes
3answers
2k views

Any image transfer protocol for wireless serial transfer?

I want to send image over wireless serial communication. I am planning to capture images using either raspberry pi or stm32 mcu using DCMI and then transfer image using wireless serial communication ...
2
votes
1answer
166 views

Arduino Uno getting a type of “HANGED” while runing samll code of switc debounce and Serial print

I am using Arduino UNO to read a push button every time it is pressed.Earlier i was simply reading the Digital IO pin to read the count and then i faced the condition of switch debounce regarding ...
5
votes
7answers
19k views

Bluetooth module HC-05 giving ERROR :(0)

I am working right now with Arduino UNO and HC-05 bluetooth module.I followed the instruction given on this link for wiring. So there are 2 mode of working with this HC-05 module Simple serial ...
2
votes
3answers
5k views

Assigning Serial number and GUID to a microcontroller

This might be a out of league question and may seems to be very odd.I am using multiple Arduino UNO boards over network and want to assign a GUID and Serial number to each board so that when ever they ...
1
vote
0answers
349 views

How to make a motion sensor circuit, that can communicate with my LAN? [closed]

I'm a newbie to Electronics/ Robotics, but I love to do it as a hobby. So I want to build a circuit (a really small in size would be much better) with a motion sensor that can communicate data (...
1
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0answers
202 views

PX4 Communication

Does anyone here know PX4 software? I'm using Eclipse to program it and I want to Open a new UART door and write on this, I'm doing the following commands... ...
11
votes
3answers
713 views

How can I control a fast (200Hz) realtime system with a slow (30Hz) system?

We are currently designing a mobile robot + mounted arm with multiple controlled degrees of freedom and sensors. I am considering an architecture in two parts: A set of realtime controllers (either ...
13
votes
3answers
3k views

Inter-processor communication for robotic arm

I'm building a hobby 6-DOF robotic arm and am wondering what the best way is to communicate between the processors (3-4 AVRs, 18 inches max separation). I'd like to have the control loop run on the ...