Problems when using rosserial on Raspberry Pi (wrong checksum for msg length)
Hello everyone, I'm using an Arduino Mega 2560 (with [Adafruit Motor Shield](https://www.adafruit.com/product/1438) on it) and I'm trying to transfer data from it to a Rasperry Pi 3B using rosserial....
View ArticleSTM32 communication with ROS via ethernet AND Serial
Hi! I'm trying to develop a system where I can communicate from my ROS workstation to an STM32 board via ethernet (TCP or UDP doesn't matter so much), and from there, process the same message from the...
View ArticleQuestion about lwIP stack on stm32 using bosch-ros-pkg/stm32
I have an STM discovery board I want to use for my project. I've been looking into using this [stm32 package](https://github.com/bosch-ros-pkg/stm32) it has [a lot of...
View ArticleUse Arduino Libraries in ROS
Hello all. I have made a publisher/subscriber for rosserial to communicate with Arduino. There are 6 sensors in total, 1 ultrasonic, 2 analog IRs and 3 digital IRs. I uploaded my code and it is...
View ArticleLost sync with device, restarting... when Arduino code have delay
Hello all. I have a problem with rosserial. I have a mobot that responds to the sensors data. I use a publisher/subscriber for this. The mobot is working fine, but I want it to move backwards for...
View ArticleWhat is rospy.sleep for?
Really confused here. I want to delay certain publishing of messages to a topic for about 1-2 seconds. Can rospy.sleep help? My code already works fine, but I need the delay since I cannot put any...
View ArticleWhy does this rosserial arduino code only permits a single subscriber?
Hi, I have a simple arduino code that takes in inputs from my joystick where a button on my joystick would act as a switch ( pressing once will turn 'on' and pressing it again turns it 'off'). My code...
View Articlerosserial: Permission denied
hello, I had to re-install my Ubuntu 16.04 with kinetic for some reasons. How ever, I tried to re-install all the work I've done before on the project. All the workspaces where saved in my onwcloud,...
View ArticleRosserial via ethernet on mbed platform STM32 NUCLEO
Hi, I'm trying to use rosserial with mbed microcontroler via ethernet/tcpip. I found that it work with arduino. Does it work with mbed platform?
View ArticleConnect two computers with RS-232 cable.
I am using Ubuntu 16.04 and ROS Kinetic. I want to connect a computer running ROS to another (without ROS) with a USB to serial connector (RS-232 cable), in order to send data (ex. send 3 decimals...
View ArticleIssues with ros_lib for Arduino
Please, I need help to review the code at the bottom of the post, there is something very odd happening. Github: [https://github.com/renanmb/box_controller](https://github.com/renanmb/box_controller)...
View Article"wrong checksum for id and message" when using interrupts to read ultrasonic...
I am using interrupts to read from ultrasonic sensors on a Teensy 3.5 board. When I publish data I get a stream of "wrong checksum for topic id and message" warnings. I will also occasionally get...
View ArticleIssue in communicating with multiple robots using rosserial_xbee
Hi, I have 10 robots - all with an xbee end device and an xbee coordinator to which they all connect. I calculate velocity commands for each of the robots and publish the cmd_vel to 10 different...
View ArticleConnection lost for only a few devices, when connecting multiple devices in a...
I have a xbee network of about 8-9 robots with xbee devices and I notice that whenever i use`rosrun rosserial_xbee xbee_network.py /dev/ttyUSB* 1 2 3 4 5 6 7 8 9` and so on, to establish the network,...
View ArticleSlower execution speed leading to Lost Sync With Device in STM32F103
Using the rosserial_stm32(https://github.com/yoneken/rosserial_stm32) library, I am trying to publishing a message(std_msgs/UInt32) on the /chatter topic at a rate of 5Hz. The message gets published at...
View ArticleROS, MBED and ethernet
Hey everyone I want to use an MBED board (NUCLEO-F767ZI) to connect to ROS via Ethernet and not serial So far can't find anyone who has done that successfully, so if you have done it and can show a...
View ArticleROSserial Arduino Subcriber function is not run after adding Publisher
I use an Arduino Uno for debugging purposes of the issue below. The function that is run for one of the subscribers (cb_drive) is not ran/called. I have removed lines of code until the function worked...
View Articlerosserial tivac tutorials rgb srv
Hello, I am following the tutorial on http://wiki.ros.org/rosserial_tivac/Tutorials/RGB%20srv I am sure that my tool chain works, as I am able to run the tutorial on...
View ArticleProblem with rosserial arduino and python serial
I'm using ROS Kinetic on an ErleBrain3 trying to connect it with an Arduino UNO. I'm trying to follow the rosserial tutorials but after running: rosrun rosserial_python serial_node.py /dev/ttyUSB0 I...
View ArticleRosserial Arduino Proper Use Of Float32MultiArray
Hi I am struggling for a week for the proper use of Float32MultiArray. I am using an Arduino mega and I have an IMU which sends the data over Serial2 for yaw, pitch and roll data. I tested the IMU code...
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