Robotics Stack Exchange
Robotics Stack Exchange

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1500 questions
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How do I adjust objects on a conveyor belt into the proper orientation?

This is part two of my larger robot, it follows up what happens with the small rocks here: What kind of sensor do i need for knowing that something is placed at a position? Now i am taking the rocks down a tube for placement. In the case they need…
bogen
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Scale problem with monocular visual odometry

Is monocular visual odometry able to estimate relative scale? Say I have a sequence of 10 images that are taken on a single track each 1 m after the previous. Can some mono odometry method distinguish relative scale when it processes image pairs…
Kozuch
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How to calculate the max load that owi 535 arm can lift?

I am trying to calculate the max lifting capability of the OWI 535 arm. The robot has 3 DOF and 3 three 3 DC motor with the robot power source delivers an Operating Voltage current of 3 Volts. The motors have a Stall Torque 60g-cm. I would like to…
user16610
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Biped State Space Implementation

Currently I working on a humanoid robot using inverted pendulum model and use LQR for walking stabilizer. Input u is Torque, State x is angle and angular velocity and y output is angle. I got the gain K value that meet my control specification…
mauzan
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PID tuning with (Deep) Reinforcement Learning

I am trying to implement a RL algorithm for an adaptive PID in a robot system. My doubt consists in the creation of the possible states in the problem. I mean, I understand quite well the problem when the possible states are door numbers, but I…
galtor
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Help with setting up Inverse Kinematics

I'm working through the Inverse Kinematic example for the Unimation PUMA 560 from Introduction to Robotics by Craig. In it he specifies the IK equations like so: In my software program I have three sliders on the screen that will give me the…
Richy
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PID tuning to make my balancing robot better

See the video below of my balancing robot. Balancing robot I was having trouble getting it to balance on hard surfaces but finally got it after playing with the PID gains a lot. Previously it was balancing just fine on carpet. I set the PID gains…
JDD
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Why are two cameras mounted in paralle in stereo application?

For stereo cameras on the market, two cameras are always mounted side by side and with a displacement that is perpendicular to the cameras’ optical axes. I take this setup for granted. One idea came to my mind whether this is necessary? If two…
Jogging Song
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Alternatives to Kalmam Filter

I am currently working on a self balancing robot project. I am going to use a MPU6050 to get data from both the accelerometer and the gyroscope. Since I need to get accurate data in a very small amount of data I need to filter the raw data I get. So…
Huzo
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Can I use the RaspberryPi to receive the GameCube remote's RF signals?

I have an old gamecube that doesn't work and I want to gut it and fill it with Arduino boards and/or Raspberry Pi if necessary. I want the project to eventually have some kind of AI aspect, but I'm also toying with the idea of using a wireless…
Daniel Ferguson
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Autonomous boat obstacle avoidance

I am currently considering joining the MicroTransat challenge and develop an autonomous boat able to survive the harsh Ocean environment. However, as for security and to ensure the boat doesn't sink due to collisions, I am looking for possible ways…
Anelito
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5 answers

Programming Inverse Kinematics in C++

I want to write my own kinematics library for my project in C++. I do understand that there are a handful of libraries like RL (Robotics Library) and ROS with inverse kinematics solvers. But for my dismay, these libraries DO NOT support MacOS…
Vino
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Any free or paid software for graphical drawing of Robotics Kinematic Scheme?

I have been searching for days looking for a dedicated software for easily draw kinematic diagrams of robotics like this: I came by this software but it is a bit hard to grasp. Is there any GUI based software instead?
wbadry
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How do I determine the required encoder resolution for a control system?

I'm designing a joint which will have to move with a velocity of ~60RPM and I have to come up with resolution requirement for the encoders within this joint. I notice however that this is easier said than done. A 1m beam will be connected to the…
ProjectM
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Is it better to use software or hardware for object sorting?

For a sorting machine where the objects to be sorted have various sizes, color, shapes, and patterns, is it more optimal (in terms of minimal time of the overall process and maximal precision and accuracy) to use a sorting algorithm or to use…
GracefulLemming
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