simulating a LIDAR sensor from scratch with python | SLAM SERIES

[@hobby_coding]

you can now get the source code from : ko-fi.com/s/86d7053723

[@alhdlakhfdqw]

thank you very muh for your wonderful video with simple explanation and great animations! :)

[@manavpatil5699]

your knowledge is superb remembered only entartainment videos has more view and subscriber but for me you are hero

[@hobby_coding]

loved your comment, thanks for watching.

[@louisdiedericks1528]

@Algobotics Love the video, can't wait to see what you do next. I had two errors in the code. 1) " TypeError: 'bool' object is not iterable" in the dataStorage function. fix: add an if function before the for loop in the dataStorage function if data!=False: for element in data: ... ... 2) The window did not close after the close button (the x next to minimize and maximize) in the corner was pressed. fix: add pygame.quit() after the while loop in the main file. It is also a good idea to add pygame.init() at the beginning of each file to ensure no "video system not initialized" errors.

[@hobby_coding]

thanks, Louis, i will pin your comment to help people find the solution to some bugs. regarding the if condition I probably just forgot to add it in the video.

[@harsh35plays]

Can you please share your code? I am having a hard time debugging

[@elifkarabulut5740]

I have done what you say but it still does not work. :/

[@JAYJAY_1931]

@@harsh35plays did you figure it out yet?

[@raoul9684]

This is an interesting content!

[@hobby_coding]

thanks abderraouf , happy ramadan .

[@RahulKumar-mh4bk]

Love your videos 💕 It would be nice to give some more theoretical details as animated supplementary videos. Hopefully videos will be released soon.

[@hobby_coding]

thanks for tuning in. what do you mean by theoretical details , math ?

[@RahulKumar-mh4bk]

@@hobby_coding yes that would be great 😊

[@lukeschmitt1773]

@@hobby_coding It would be interesting to see concepts like Extended Kalman Filters or Particle Filters covered in your style. Great work!

[@harsh35plays]

dude can you help me with the code?

[@Oguzhan_o7]

Awesome 👏👏👏👏👏

[@hobby_coding]

Thanks :)

[@Oguzhan_o7]

@@hobby_coding you're welcome :)

[@aameaame7973]

Amazing content! Thank you so much for sharing!

[@ahmedbenyoucef3238]

perfect, Bro 👍 you have a good explaining method. good luck.

[@swagh1611]

While converting lidar measurements to position: why for y coordinate you subtract it? y = - distance * math.sin(angle) + robot_position[1] shouldn't it be y = distance * math.sin(angle) + robot_position[1] ? i.e without a negative sign. And similar in the function sense_obstacles()

[@hobby_coding]

the - sign is to account for the display inverted y axis

[@tommytran5962]

Use the + sign, not the - sign. The + sign worked for me.

[@dingdong2588]

@@hobby_coding stop scamming broooo

[@hobby_coding]

@@dingdong2588 what are you talking about ?

[@dingdong2588]

@@hobby_coding im sorry daddy

[@tranquochung1995]

Thank you very much Mr, Algobotics. Your video is very helpful.

[@badcandy1337]

Subscribed. man you are amazingly smart

[@JashDoshi]

9:51 in realtime, the colour of a wall wont be black, it will be a variable colour, so how can you implement that here?

[@hobby_coding]

this is just a simulation in real-life the lidar sensor will return the angle and distance to that obstacle without considering any colors i only did this trick to simulate the LIDAR sensor

[@JashDoshi]

@@hobby_coding ahh okayy, cant wait for you to make this with your mobile cam!

[@MohammadHefny_HefnySco]

Many thanks for this great video

[@hobby_coding]

you're welcome Mohammed

[@kadaliakshay6770]

hey is there any way of doing this with camera but without a LIDAR? because I've done some research and it kinda looks like it's possible...

[@hobby_coding]

Yes, autonomous driving can be done with a camera. Tesla for example uses cameras, radar and ultrasonic sensors.

[@kadaliakshay6770]

@@hobby_coding thx

[@elifkarabulut5740]

Is it possible to insert a video or series of images to this code? What I want to do is, having two objects on the plan and make them look like they are moving. So, I thought about creating a video and uploading it or inserting series of images and creating a transmission between them? Please help me.

[@hobby_coding]

yes, but make sure the colors are the same. you can make an animation usign after effect to suit your purposes and export this animation in the form of images. at each iteration show one frame and you are done.

[@elifkarabulut5740]

@@hobby_coding and what if I want to add a moving object? Can I simpy create another class named 'object' and move this object on this plan? I want object to be able to recognize obstacles and change the direction accordingy.

[@tommytran5962]

at 9:01, why is sigma squared ?

[@littledude6958]

Great Video.! I am having one problem . ' TypeError: 'bool' object is not iterable '. Im getting this error for the dataStorage method.

[@xhibit-c8w]

same did you find the solution?

[@JashDoshi]

The solution is: return an iterable. I suggest that you either convert the bool to a string (str(False)) or enclose it in a tuple ((False,)).

[@littledude6958]

@@JashDoshi Thankyou..!!

[@DonnyPUtama]

@@littledude6958 i still dont get it

[@elifkarabulut5740]

anyone can share the code of the solution?

[@JAYJAY_1931]

Great video and very nicely explained! Only trouble I'm having is the fact that when i start my simulation the window doesnt show any obstacles. Ive been looking for some time now. anyone got some tips?

[@mathewtomy3823]

Is this useful for doing object detection using lidar

[@angeloespinoza9850]

Hi Algobotics, I am currently basing on this project to do a Visibility Polygon. Right now I have got a point on the same map as you have but now with red lines emanating from it as lidar sensor. I want to detect collision from this emanating lines to the borders of the image. How could I do it?

[@yoursyasuo5868]

This is so awesome!!! Can you please provide the project link please?

[@hobby_coding]

sorry , i'm waiting for the project to be completed befor I post it in GitHub , so please just write the code by watching the video for now .

[@yoursyasuo5868]

@@hobby_coding actually I did coded along the video but got some errors. And I need to implement SLAM simulation like this for a project. That would be great if I could get some help from you.... Please consider.

[@hobby_coding]

@@yoursyasuo5868 please tell me what bugs did you get

[@NimishKashyap]

Yes I agree, that'll be a great help

[@yoursyasuo5868]

I got the sensed_obstacle() not found. I double checked my code and I have literally defined it correctly but still it is showing that same error

[@ДжайгоДжай]

Hello! I wrote all the code like yours, but it doesn't display, scan, or display an image.

[@Hanan-qz8ms]

I use rplidar c1.. when i run it apper a black window and the lidar doesn't connect or even work!😢 please help me

[@uselessrobotics5383]

Hello, Your work is very nice ! SOmetimes, you are happy when you come across some content creator :)

[@hobby_coding]

thank you for the positive comment, I'm glad you liked the content.

[@princerajput2852]

how we can create 3d/2d map from lidar(ply/.bag) file using python

[@hobby_coding]

i dont have a lidar sensor , that's why i decided to simulate one :)

[@vardhanviswanath1234]

When I hover my mouse in the pygame window, it's displaying red lines and dots in random order in the pygame window, instead of displaying the map. Please help me out.

[@JAYJAY_1931]

did you find a solution?

[@AbcDef-oe8sj]

can u help me with this...i got an error that i couldnt rectify... it says... 'NoneType' object is not subscriptable in show_sensorData() method would be really helpfull if u could help me

[@sriramsriram9246]

which type of controller is used in this robot

[@tommytran5962]

thank you so much.

[@antonwezels9403]

Hey are you still on fiverr available?

[@jamilahmarramduarte1575]

Hi sir how to connect this code into object detection?

[@nashrllah]

how can i combine it with vrep

[@AlaEddine19176]

Hi Sir i need some help to build a small simulation app for study work can you help me ??

[@ahmedchakouri3498]

hello everyone I hope you all fine I have a question, how to receive data from LIDAR LMS111-10100 and save it using ethernet ?

[@stefano8936]

7:20 F-Bomb dropped

[@badcandy1337]

you stopped coding?????

[@Pages_Perfected]

hmm

[@hobby_coding]

hmmm

[@dingdong2588]

Anyone bought his fiver codes link it here plz :D

[@dingdong2588]

i mean kopi

[@Taka-tg8zq]

Hi, I like your tutorial. Do you have LinkedIn?

[@hobby_coding]

hello taka, my LinkedIn is : www.linkedin.com/in/mouad-boumediene/

[@Taka-tg8zq]

@@hobby_coding Added you there :) Good to connect!