Robotics Stack Exchange
Robotics Stack Exchange

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Building A Servo Tester To Measure Peak/Stalled Amp Draw

Since finding data on stalled and in use under load (not free) amp draw for servos seems impossible, I want to build/create my own servo tester. All I really want to know is how much amps the servo is drawing at idle, at movement under load, and at…
RC Hobbyist
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Atlas Robot Reference

Boston Dynamics keeps making great robots, however, I dont see any papers that they publish. Although now I can find papers on people using the ATLAS robot, I can not find an original paper detailing the robot or its mechanics designs. Is there a…
user-2147482637
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Fit robot simulator to robot

I have odometry data $(x, y, angle)$ of a real two-wheeled robot, who received control commands $(forward speed, angular speed)$. Now I want to code a motion model (in C++ (/ROS)) which should follow the same trajectory, given the same control…
user3926
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Sensor for tracking relative position of human

I am making a robot that needs to continuously track the relative position of a human, up to 15 meters away and with at least 300 degrees coverage. Currently I am using a Hitechnic IRSeeker v2 sensor and made a beacon wristband with 6 TV remote IR…
Urill
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What do we call a coupling with infinite range of rotation

In most situations, range of motion is limited by the fact that we need to carry power or information past a joint. So, past a certain point there are either cables in the way, or the cables would stretch so much that they would either prevent…
jzx
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Neuromorphic Engineering and Robotics

I have been into a boggling paper research on neuromorphic engineering and its implications on robotics applications, lately. It is relatively a less applied field and full of academic papers and difficult to skim easily :) There are many ongoing…
xsnk
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ros2 communication between machines work over ethernet but not over wifi

I have two different machines installed with ubuntu 22.04 and ros (2) humble. I connected those two machines to the same subnet over ethernet connection, and check that they can ping each other. Then I executed in one machine: ros2 run…
Ran Binyamini
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Autonomous Mapping help!

I have a robot that uses odometry and Lidar. Im using both Nav2 and slam_toolbox in order to manually create the map and then navigating through it. My question is, Is there a way to make the robot map the room autonomusly? To know when the map is…
Danana
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ros2 foxy python or interface not seeing full extent of the custom message

My problem is that I cannot see or access the full extent of the custom message in ROS 2 Foxy. My custom message is named "Logitechjoy.msg": # Logitechjoy.msg std_msgs/Header header Joyaxisbuttons buttons The structure for "Joyaxisbuttons.msg"…
Frenki221
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Jacobian method for inverse kinematics

I have big problem. I have to solve inverse kinematics for a manipulator with 6-DOF using jacobian method. From what I know to do that I need to have matrix of transformation and Denavit–Hartenberg parameters, which both I have. But I am not a…
abece
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Can inverse dynamics control be regarded as a function?

I know that inverse kinematics ($p \rightarrow q$, p: desired pose of the end-effector, q: joint angles) is not a function because there might be multiple joint angle vectors q that result in the same pose p. By inverse dynamics control I mean the…
alfa
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Forward Kinematics Two fixed standard wheels

What would the equations be for the robot's angular and linear velocity at P and also P2? I think I'm doing it wrong... WL = left wheels angular velocity WR = right wheels angular velocity For P I had for example the linear velocity = (1/3)rWL +…
randirsham
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In Webots is there a way to easily modify an existing robot (like the Mavic drone)

I am wondering if there's an easy way of modifying an existing robot, such as the Mavic drone, and then test how this modification worked. For example, I would like to change the shape or angle of the blades. I have opened the Mavic demo, and I have…
Dr Sokoban
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VeX - Keeping arm at an angle

So my team made a Vex robot for the toss-up competition, but we need the arm up during the autonomous. The problem is that it's too heavy to stay up on its own. I was going to use encoders to count what angle the arm is at. I was going to use this…
Michael Blake
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The 'stomp' configuration parameter was not found

I am trying to use STOMP Planner by following the documentation. As per the documentation, I installed the STOMP from the source in ROS Melodic (Ubuntu 18.04.6 LTS). Unfortunately, the command roslaunch panda_moveit_config demo_stomp.launch is…
ravi
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