Questions tagged [autonomous-car]
A vehicle that is capable to sense its environment and moving in it with little or no human input.
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Does Vehicle Yaw angle measures same at every point on it? If not, how to translate yaw rotation to COG of the vehicle from different point?
I am using an IMU to measure the yaw rotation angle of a car. I need to translate the rotation measured to COG of the vehicle. I can ignore roll and pitch as I am driving it on a flat surface. So, ...
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1answer
31 views
Variables that Improve SLAM
I have a general question regarding SLAM as I am not an expert on the topic. What are the variables that can improve map generation?
The ones I can think of are:
A higher resolution camera
...
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1answer
39 views
How to get position (X Y values) from a USB optical mouse
I want to use an optical mouse to measure displacement in X and Y direction of my robot. I'm using Ubuntu mate 18.04 on raspberry pi and wrote the following python code :
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1answer
29 views
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107 views
How Can A Total Beginner Become A Skilled Roboticist?
Say the only computer skill you have is programming in C/C++...what all things would you have to learn in order to be an adept full stack roboticist, one who can single-handedly build an autonomous/AI ...
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1answer
33 views
EKF SLAM : Missing older landmarks in new observation
I am a beginner to SLAM and robotics in general and I have been trying to implement SLAM on my GoPiGo3 robot car kit using primarily Chapter 10 from Probabilistic Robotics by Sebastian Thrun as ...
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1answer
57 views
Tuning PID controlling car's steering angle
We built a car model with Ackerman steering type for line following task. The distance between rear and front wheels' axes was about 42 cm. Then we tuned PID controller (really just PD: Kp = 0.9, Ki = ...
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13 views
How to draw an encoder plate?
What is a good program to create an encoder plate?
Essentially, what I want is: A circle of 4.8cm diameter that has 36 segments, half of which are colored in black and the other half should be white! ...
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1answer
20 views
Interfacing HMC5883l Compass with Arduino
I'm using an HMC5883l compass module to find the angle at which my module is pointed from magnetic North. I found this code as an example with "HMC5883L_Simple.h" library.
And the results I'm getting ...
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0answers
15 views
Undo pitching effect of camera when pose (y-axis) is near 90 degrees?
I am using KITTI odometry dataset whereby the camera's axis is pointing X (east), Y (down) and Z (north). It also contain the frame to frame poses of the camera (first pose is fixed as the map frame). ...
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1answer
55 views
Autonomous Navigation Bot [duplicate]
I'm trying to build an Autonomous parcel delivering rover using GPS.So after giving destination coordinates, I don't know how to make the robot understand to which direction it should move. Basically, ...
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36 views
How can I perform localisation without using LIDAR?
I want to make a self driving (autonomous) wheelchair where I want to create a map for localisation of the wheelchair.
I do not want to use LIDAR as it is very expensive. Also, I do not mind if the ...
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21 views
Technical books on autonomous cars?
What are some technical books specifically geared towards software/hardware designs or algorithm designs for autonomous cars? Not just books like Probabilistic Robotics or Planning Algorithms.
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1answer
53 views
How do I calculate the direction robot is facing, pose from velocity and yaw rate?
I have a simple car robot with four wheels moving relatively slowly (5~10 mph). The robot has a velocity magnitude and yaw rate sensor and the sensor samples about every 0.1 seconds. I want to map the ...
4
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2answers
79 views
How does a self-driving car locate itself when the environment changes?
There's something I don't quite understand about SLAM. When a self-driving car wants to locate itself using a prior map, how does it do that when the environment keeps changing, e.g., new cars parked ...
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2answers
36 views
State-vector for distance measurement between two autonomous cars
I hope someone can help me:
Given two autonomously driving cars, I want to make sure they keep a constant distance to each other. For this purpose, I want to design a Kalmanfilter. Typically, the ...
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1answer
42 views
Tackling loops and discontinuations in PID line follower
We are making a PID line follower using arduino for a competition. According to the rules of the competition they will have loops and discontinuations in their track. Can anyone give some idea how we ...
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1answer
62 views
How can I determine the Transition Matrix of a Kalman-Filter ?
I am trying to set up a Kalman-Filter to filter position-measurements of a self-driving car. To do so, I consider a state-vector with 5 elements and am now trying to set up the Transition Matrix.
As ...
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1answer
31 views
how to find space in point cloud larger than given l*b
Is their any method by using which I can find a space or gap in given point cloud which has size greater than given rectangle of size $l*b$ or a circle of radius $r$? This way my robot can make a path ...
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1answer
32 views
Converging to better solutions by running RRTstar for multiple Iterations
In the Literature I have read so far, I saw RRT star was running in multiple loops to converge to a better solution ( near optimal). I was wondering how I could implement the same, as most pseudocodes ...
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1answer
182 views
In practical terms, how close is the accuracy of camera-based visual odometry/SLAM methods to lidar-based methods for autonomous car navigation?
Benedict Evans, a general partner at Andreessen Horowitz, claims that “almost all autonomy” projects are using lidar for SLAM, and that not all of them use HD maps.
An MIT group is testing self-...
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3answers
100 views
Robotics RC Car hack help
I need help with a robotisation project, please.
I am new to robotics and have the Maverick RC car pictured below:
My project is to add Arduino and Raspberry Pi boards to control the speed and ...
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2answers
55 views
Is a small time locally controllable system holonomic?
If you define a wheel that can only rotate and move in the direction it is pointing to but using a combination of motions (arbitrarily short) it can be moved sideways, does the system still remain ...
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0answers
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DSO_ROS is not giving right coordinates after taking turn (left/right)
Hi all ,
i got stuck in a problem and really need your help.
Goal:
I want to move little Toy vehicle autonomously (localization and mapping) and want to get distance covered by vehicle using DSO in ...
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4answers
1k views
Which is a good and cheap 3D LIDAR or other options? [closed]
Our team is planning to go for European Rover Challenge (ERC) 2018 for which we are designing an Autonomous rover. In order to implement SLAM, we need a way of mapping (with a range of atleast 2-4 ...
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1answer
243 views
Adding ROS to Raspberry Pi car and teleoperation
I just completed a Raspberry Pi car setup shown in the image below.
With my car now assembled, I can run a simple Python script put the necessary GPIO pins HIGH or LOW and moves the car around ...
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1answer
40 views
Potential field algorithm in a predefined trajectory
I am currently working on collision avoidance using Potential fields and I have visualized the same in winfom.
Now, I need to test the algorithm in predefined trajectory say a spline(or in a lane).
...
2
votes
1answer
41 views
Navigation of a ground vehicle towards target without map
I have the following setup:
RC car chassis which can turn, go back and forward; both the turn rate and the acceleration can be controlled smoothly
Raspberry Pi 3
Two cameras so that depth map can be ...
2
votes
1answer
339 views
State prediction of vehicle with Ackermann steering geometry using Kalman-Filter
I am trying to have a Kalman-Filter (or Extended-KF) give me positions for a small remotely controlled vehicle with an Ackermann steering geometry (moving on a plane surface). The control commands I ...
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1answer
483 views
Reducing noise between 3 ultrasonic sensors and make Autonomous Robot more precise
I made an autonomous robot with 3 ultrasonic sensors. I want to reduce the noise between the 3 sensors and make it gradually slow when it approaches an obstacle. My code is mentioned below. Please ...
2
votes
1answer
435 views
How to build an autonomous navigation system for robots?
I like to know can we make a web site or application(or using something free like google map) to routing a way and our robot can follow the line exactly? For example I like to build a quad-copter and ...
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0answers
626 views
Is there an open source autonomous vehicle simulator with control over traffic? [closed]
As a part of my research work I'm supposed to build or use an existing autonomous vehicle simulator, in which I can also control the behaviour of the traffic in the system, I was searching on Google ...
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2answers
908 views
SLAM system for LIDAR and Stereo camera for cone detection for Autonomous driving
The purpose of the SLAM system is very specific, for detecting cones in an image and triangulate their position to create a map.
The data input would be the camera data, odometry and the LIDAR data.
I ...
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1answer
338 views
Software simulation vs. real world scale model simulation [closed]
There are high quality software robotics simulators like Gazebo available today. What is the difference between a pure software simulation and a real world (say RC) scale model simulation? Is it ...
