How do we add LIDAR to a ROS robot?

[@JonPeroutka]

Josh, I'm completely new to robotics, but I made it this far and I wish you could see the smile on my face as I was able to drive my bot around the map just using the point cloud from the laser scan. thank you for this series. it is freaking AMAZING!

[@ArticulatedRobotics]

Thanks Jon - hearing comments like that puts a smile on MY face! :D

[@ajithkumarps1974]

@@ArticulatedRobotics pls do make video on integration of 3d lidar

[@akhadtop2067]

"That will actually publish the lidar to the scan topic." Literally the sentence that made the difference for me. Thank you for this awesome video.

[@ArticulatedRobotics]

Thanks, I'm glad to help!

[@timothysands5537]

You are my hero Josh. I'm just getting started designing a robot that will scan HVAC pipe duct and produce a 3D point cloud/map. Plan is to use a small robot to repair ducts in solid concrete slab foundations.

[@scooterboom4157]

thank you THANK YOU! I'm just a kid that likes to make robots and I tryed to understand ros, but you are the first one that explains it clearly!

[@wardeneternal1140]

Info is pure gold. Thank you sir

[@mitcaro7310]

Thank you so much Josh for such a detailed and well structured content. It is a great help for me, making it possible to learn the simulation part of my project very fast.

[@co4erol]

Thank you for this series. Keep continue please

[@alelmcity]

Thanks for the great content. Keep up the momentum please.

[@markg4555]

Interested in seeing a video identifying most affordable 3D lidar and specification considerations based on your experience. Great video thanks!

[@cangozpinar]

Thank you very much. You won't believe how much your series has helped me. You are hands down the best resource for ros2 out there. Please upload new videos related to writing custom hardware_interface and control for ros2 control soon.

[@JIM94K]

Thanks for the great content! I'm really enjoying the content, and following along at home. I'd love to see a video on the industrial-grade lidars, the 3D lidar in particular.

[@upulba]

Great video as usual, and eagerly waiting for the next one 😀

[@ArticulatedRobotics]

Thanks :D

[@jeremiedupont8696]

I'm addicted to this course!!... But I have to pause now. My LiDAR is still in the mail 😢

[@ArticulatedRobotics]

Oh no :( But thank yo!!

[@karincatech6322]

thank you for the great contents, very useful for me and of course i would like to see a video about how to use industrial grade lidars on ROS.

[@vikrantprasad5435]

great video very cool, i was able to simulate my drone with lidar in gazebo

[@davidfarning8246]

Humble tester here.... Another great video. Humble is starting to come together pretty well. For some reason updates were a bit wonky. A fresh install of ROS Humble on a fresh install of Ubuntu 22.04 on a bare metal partition fixed that last couple of things that were causing me problem. Things are far enough along that I am going to try to work through your series with ROS Humble and Gazebo Fortress.

[@ArticulatedRobotics]

Nice one! I'm not TOO surprised to hear it's going well on Humble, but I'm very interested to see how things go with Fortress as I have basically no experience with new (Ignition) Gazebo.

[@davidfarning8246]

@@ArticulatedRobotics From my inexperienced position... The new (Ignition) gazebo is really good if your use case matches closely with one of the use cases Open Robotics focuses on developing, such as the Subterranean (SubT) Challenge. That is where their money and development resources have gone. I played with running the gazebo server on a dual-core Xeon server with the gazebo client running on my laptop. After a bit of fiddling, it actually worked. For the rest of us, the Ignition gazebo seems to be having a hard time replacing gazebo classic. It is probably not polished (or complete) enough to overcome the inertia of using Gazebo Classic. The next inflection point with probably be the spring of 2023 as Melodic hits end of life and more users are forced to migrate to ROS 2.

[@sebrihamza3775]

i'm really so excited to watch your next video

[@ArticulatedRobotics]

Thanks! Sorry it's a bit late, have been very busy the last few weeks. Planning is mostly done, hoping to record it today and release it by next weekend :)

[@sebrihamza3775]

@@ArticulatedRobotics thanks a lot

[@messerschmidtfpv4419]

The cable choice is very important! of my 7 cables only 2 enabled the system to communicate. now it works fine for me I'm happily waiting for the next episode and hope for a lesson on the subject of Ps4 Controller with bluetooth.

[@ArticulatedRobotics]

^ This. I forget if I mentioned it in the video or not (I meant to), but I had the exact same problem. It is very finicky about cables. (Sorry this reply is so late!)

[@Jorge_AS_Fernandes]

It would be nice if you could make a video using 3D lidar like a velodyne or something like that. Great videos. Had a great time watching them. Regards from Portugal

[@onlg8]

Wow it's a great video,thank you very much for making this video

[@ArticulatedRobotics]

Thanks!

[@hosseinfallahi7306]

You are awesome man. I am really looking forward to your next useful videos.

[@ArticulatedRobotics]

Thanks!

[@sarwat3552]

Where did you find the lidar plugin? please share any resource where most common plugings can be found.

[@skylinegt6]

I would most definitely like some more videos on Lidar. I found some Lidar that claim 4d which apparently is is 3d plus 1d grey scale. I have no idea what that means but perhaps if you have some time to make a video on it or point me in the right direction i'd greatly appreciate it.

[@julienbietlot3401]

Hello, good video. Indeen interrested to see video about lidar and ros2, several lidar with ros, etc. Thanks. Great content

[@ArticulatedRobotics]

Thanks!

[@SAMETELMACI]

very ythanks for good info, please keep make videoo we love youu

[@meditativerelaxingmusic3435]

Informative, Thanks

[@hiteshjain2640]

Hey Josh, can you do a video on integrating imu sensors in our project

[@manojguha2046]

Good video and explanation

[@ArticulatedRobotics]

Thanks!

[@virensompura4925]

Hello, I’m facing some issues I’m getting data from RPLiDAR sensor when i connected to Pi I checked with “ros2 topic echo /scan” but when I subscribed to /scan topic from my Computer it’s not showing data neither in Rviz nor in Terminal by running “ros topic echo /scan”

[@arash.jafari]

Did you fix it? I have same issue

[@CerebralDad]

Josh, I ordered a Lidar to add to a future robot that I'm building using your tutorials - I purchased a HLS-LFCD2 lidar off ebay but it doesn't seem to have come with a LDS to usb controller board. It has 2 leads one with 6 wires and another that has 2 for 5v power. Do you happen to know where i can get an adapter board? Looking up wiring diagrams it seems I would need a LDS to USB, however, I'm not sure if an FTDI adapter would work or not. Any suggestions would be greatly appreciated; thanks for the videos, even though I'm late to the party!! Cheers!

[@grahamnichols1416]

Have you tried adding a laser range finder like the VL53L1X and adding it to a motorized platform via a slipping?

[@it_-_]

Hi, where can I find your first videos or lesson for ROS in robotics? Please educate me about that.

[@Ali_AKB_GH]

Thanks mate, this video is excellent. Just wondering if you could create a video talking about Foxglove software and how to read the lidar through this software and also explain how Foxglove is working with ROS2

[@mischief6737]

I am not able to see my scan topic in rostopic list. Any way to rectify that?

[@pushpanjalijha2779]

Can you explain me how the two workspace works pareleley or connect them . one has launch file and another ws has xacro

[@DeepDuggalOfficial]

@ArticulatedRobotics I want a 3d lidar video! I'm a novice, but I have great idea that can help people. Other than a tutorial on 3d lidar and ROS, could you also include which 3d lidar is the most affordable.

[@JonasHamill]

any tips on doing this with namespaces for multiple robots in ros1?

[@ahmetttt10]

Is there a training set that shows how to set the parameter values of a robot with sensors designed with Solidworks from scratch and then the necessary coding with Ros? Or can you make such a training?

[@olubukolaogunsola5864]

@ArticulatedRobotics , did you 3D print the base for the lidar?

[@ArticulatedRobotics]

Yeah I think maybe it was this one? www.printables.com/model/83507-a1-lidar-mount-for-turtlebot3-waffle-plate

[@GodLikeonly1]

hey thank you for uplading these videos as I am working on similar project but as lidar is expensive cant we use ultrasonic sensors like 3 or 4 instead , it is much cheaper

[@bencheshire2680]

What is the source for the libgazebo_ros_ray_sensor.so file? I can't seem to find it online and need to reference the source for my university project

[@rihamali6239]

Thank you for this informative video and your amazing effort. I have a question can I do the same with LIDAR lite v3 ?

[@ServeEvolution]

Hi Josh, I am looking for a 2d lidar scanner for layout measurements. We should make only 2d layouts for energetic calculations. I would put the scanner around 2 m height above our head and make measurements in every room in fix position and move only among the rooms one time. The target a simple 2D layout with precise measurements with a cheap and simple device. Do you know any device like this on the market. I haven't found so far.

[@cyka_delik9537]

So I'm having a bit of confusion here...so after "sudo apt install ros-jazzy-rplidar-ros" it installs fine...but it's in an opt directory. Then when I go and read official documentation, it's telling me to install the RPLIDAR package to the robot_ws/src directory. What's the discrepancy here? Are these different things for different purposes?

[@fusionlab279]

I cannot find "libgazebo_ros_ray_sensor.so". Is it substituted to another plugin?

[@toddryan4338]

Hi Josh! I am having trouble viewing the LiDAR and/or my camera over ssh. I have everything working locally and in the simulator (gazebo), but after I load it to my Raspberry Pi and run it, I don't know how to access it. I can see the publisher node working - but in RViz2, how do I connect to the camera or lidar node topic over ssh? Thank you!

[@toddryan4338]

For clarification: Rviz in on my laptop. The raspberry pi is running Ubuntu JammyJellyfish headless server, so no displays.

[@ermuhambetcalmenov8104]

Рахмет сізге

[@robertoguerra5375]

Thank you for making this video 😊 the part where I can select usb by path is worth gold to me 😊😊😊 Can LiDAR scans be used for other than slam? I would like to make “object detected in forbidden area” logic 😅

[@GREAT-ATA]

Please do make tutorials on how to use lidar + ROS to make a 2 wheeled car robot

[@saviouremmanuel3608]

This is so much cool and what I have been searching for. Apparently, I have been using the wrong Keyword search. Please sir, would you happen to have a tutorial class that can teach one the introduction of ROS, and Gazebo from ground up as I have a project I need to work on and I would love to make a career out of this. Thanks!

[@chanyoungcheong688]

Hi, I have my own customized simulation in gazebo, so I tried to pull up camera thing in rviz but it doesn't show anything. What ros package do I need to install?

[@johnnam7225]

You are my best lecturer for self study. Just in case, are you in Australia?

[@ArticulatedRobotics]

Thanks John! And yes, I am :)

[@Phoenix_1974]

Hey hi!! How to integrate the LiDAR sensor with 7 dof robotic arm end effector for proper collision avoidance , I have prepared the Cad model of LiDAR too , but how to activate the LiDAR sensor in such a way that whenever I have I set a end effector two position so if any obstacles is present then it should avoid it ?? Can you guide me through it pls??

[@nickroussos3313]

I am just starting to learn about ROS and RPlidar. I have successfully. installed ROS for Windows but I dont have the knowledge to install the RPLidar package to ROS. I have the SLAMTEC RPLIDAR Lidar A1 and would greatly. appreciate your help. Thank. you

[@RobertLugg]

After minute 6 I got lost. Do you explain the xml you are writing in other videos?

[@youcefmaifi5867]

i have a ydlidarx3 and i have problem when i use it with ros2 humble, can you please make a video to explain how to use it!

[@zerobow9413]

nice one

[@liuyuexiang9827]

What are the 2d lidar & 3d lidar model?Where to buy?

[@brian7android985]

How many moving LIDAR in the same space before they get confused?

[@ថាន្នីសុគុណ]

hi , i use the ydlidar . i do not know what wrong ,it does not scan the map. what should i do?

[@leninsingharam.g6708]

Hi josh i am using a YD lidar sensor . I cannot do gmapping through it . After downloading the gmapping and slam package. I am getting so many errors. Can u tell whats is catkin ans cmake these are the most of the errors

[@kanzaen3753]

my robot doesn't stop when it faces an obstacle even though i did all the steps you did could you help me know the reason thank you

[@Foolsimsimulate]

hello bro, I already i had YD Lidar, can I use the YD Lidar instead? What modifications must be made to use YD lidar?

[@icecube7512]

Hello ! Did you get an answer ? Thx

[@benammaroussama4371]

can you connect a rplidar directly without rasberry pi

[@somaakashperni6677]

sir i have ros2 ;does it work if i follow the same as u did in this tutorial????

[@rominej]

@1:16 seconds in the light from the tape measure is on the wall, yet the tape measure is pointing at the ceiling.... WHAT IS HAPPENING?!?!?!?!?

[@taciusa]

do you have any 0 to hero course? im new to robotics, and would like to follow a roadmap to be a good developer, like you :)

[@MASA-ef9qf]

is there a tutorial where you can 'map' with a 2D rplidar (a1)?

[@ArticulatedRobotics]

This is coming very soon!

[@MASA-ef9qf]

@@ArticulatedRobotics thank you very much :) it would really help me a lot.

[@Build_the_Future]

I think in the future we won't be using LIDAR but NERF. As soon as NERF's can be done in real-time with a few cameras, then goodbye LIDAR

[@ArticulatedRobotics]

Yes it will be very interesting to see people integrate NERFs with robotics

[@johnnam7225]

dev machine - $ros2 service call ... is not working ... only $ros2 service list ... working also dev machine - $ros2 service call /stop_motor std_srvs/srv/Empty {} no working only pi working any issues?

[@impostercoding]

March 2024, if you are working with the newer versions of ROS (humble) and use Colcon (not catkin), which are the preferred methods. this does not work and from all the sources I see, you can't use this Lidar

[@yuanmizuna6253]

i have the same question

[@impostercoding]

@@yuanmizuna6253, I'm sure if you install ROS2 Foxy, which is still supported, but not for long, and use catkin instead of Colcon, it will still work. My issue is I have a fully built bot, and to go back and start over would suck. Especially on a Pi when storage is limited. Almost would have to completely uninstall Humble. Just sucks that I bought a Lidar that can't be used with todays systems. Plus there aren't many I find that are available. Top it all off, all the pros fail to tell you that part.

[@Mr_X_FIFA]

We were also these issues while using sensors like Lidar, imu, odometery encoders, we have used humble and colcon, so what could be the reason of failing these sensors while robot localisation and navigation? Could you provide me any resources or answers to these problems where I could know the possible reasons of these failures, please, because I want to know where the problem is and how should I improve these and what other techniques can I use if not this.

[@angelanikolova7354]

I am using the RPLidar A3M1 for a similar project and I personally didn't have any problems incorporating it with ros2 humble. There was a slight problem with the power supply for it, especially for the current because it requires 1.5 to 2 amps and I would get timeout errors, but other than that I do not recall other problems. As fun as it is to use it, I wouldn't say it's the most practical.

[@impostercoding]

@@angelanikolova7354, it's been a while since I have messed with it but my problem was, I had a bot built and I was scaling up, something you do as a developer. I am not a copy paste, or a "do as I do" developer. I came to the video after looking at the repo to try and get a better understanding of how to implement in a practical use. Now if you followed the series, you built it in a short-term supported version of ROS. Catkin is no longer recommended, in fact, it was not even a build option for me. Catkin was for ROS2 Foxy and older versions. I've spent many hours reading forums and docs about this. I did find the build for Colcon. I was just pointing out if you were trying to learn this for modern/future times, ROS2 Foxy / Catkin, is not the right way to learn.

[@SasteJugaad]

Hi your tutorials have been great help but there is one issue. I cloned your repo tried to run it. There is transform error for left and right wheel. Lidar and camera works but not able to move the bot in sim. I think the problem is /odom you mentioned at 13:13 I cannot see it in mine. In which video did you add it ?? Right now I am using base_link as the frame.

[@catsanddogs5077]

i want courses for roboto

[@javierfernandez6327]

talk about cost. If my project can't afford it, I won't care about the rest.