Robotics Stack Exchange
Robotics Stack Exchange

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robotic arm DOF

I'm working on an assignment and was wondering aobut the degrees of freedom this system has. The generalized coordinates are: $\underline{q}:$ \begin{bmatrix} x \\ \theta_{1} \\ \theta_{2} \\ \end{bmatrix} A revolute joint connects both rods.…
abraham lincoln
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Using brushless motors for very high torque

I'm currently building an robotic arm and I want the elbow joint to be comparable to a human one But here's the problem, electric linear actuators are too slow and have low torque, same goes with regular hobby servos and stepper motors Ideally I…
R3D34THR4Y
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How to finely control a gear motor with encoder using Arduino/RPi?

I'm having trouble with getting this motor to work and could use some help/guidance, please. I have a micro gear motor with encoder which I got from ServoCity (https://www.servocity.com/90-rpm-micro-gear-motor-w-encoder) and am trying to use it for…
user3481929
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Robotic arm select servo motors

Hi i´m designing a robotic arm based on this idea of the NOVABOT I only want to change its structural parts by aluminum tubes. In this design 3D model it use the servo hs-311 wish have a max torque of 3.7 kg/cm, and its made of some plastic…
efirvida
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Maze Solving Algorithm For Mazes With Loops

I am trying to implement a line following robot that can solve mazes similar to the Pololu robots you can watch on youtube. My problem is the maze that I am trying to solve is looped and therefore simple Left/Right hand rule can not solve the maze.…
user2476983
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Determine the relative camera pose given two RGB camera frames in openCV-python

I would like to determine the relative camera pose given two RGB camera frames. I assume there's overlap in field of view between the two cameras, what I am looking for ultimately is the rotation and translation between two cameras. I understand how…
chibro2
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Setting initial conditions in a quadcopter numerical simulation

I am new to robotics, and currently trying to develop a purely numerical simulation of a quadcopter. As I understand, the problem of quadcopter control includes take-off control, hover stabilization and landing. However, I am only working with…
dhanshreeA
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How can I stream Kinect V2 tracking data from PC to Raspberry Pi 3 through WiFi?

I'm currently working with Kinect v2. I can do all sort of stuff on PC with it. What I want to do next is, to get the data I want on PC and control the Raspberry Pi with that data (for example, I will move the Pi with motors when I tilt my head to…
Onur Yıldırım
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Nuc, custom pc or raspberry pi?

For our Minor “Robotics and Vision” we need to use ROS to create a system that can navigate to and from a coffee machine. The available hardware consists of a robotic platform from "Dr Robot", and a manipulator that uses actuators from Dynamixel.…
Foitn
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Controlling a quadrotor from a PC

I need to control quadrotor from a PC, without using a joystick. I have got a mini-beetle quad V929 Beetle 4-Axis and also have this NRF24L01+ Wireless Transceiver Module Chip (2.4 GHz transceiver) Is it possible to write an Arduino program to make…
debianmaster
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Robotic vessel navigation using GIS datasets

I am trying to build an autonomous vessel able to plan the best route to a certain waypoint or to follow a pre-defined route. Currently, I have imported Esri GIS files containing elevation data (coordinates can be extracted from grid size and lower…
Anelito
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I fused a GPS and IMU and I am wondering if my results make sense

I am trying to fuse a u-blox M8 with a MicroStrain IMU via a loosely coupled architecture. I was wondering if there are any suggestions or insights based on the results that I am getting. I based most of my code off of Paul Grove’s 2nd edition…
rielt12
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In the SLAM for dummies what is z-h in updating X?

In SLAM for Dummies there is on page 40 this formula: $X = X+K(z-h)$ What is $z-h$ in updating $X$?
user18147
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Building robots with high reliability, durability, and battery life

I'm involved in research on psychologically plausible models of reinforcement learning, and as such I thought it'd be nice to try and see how well some to the models out there perform in the real world (i.e. sensory-motor learning on a mobile…
zergylord
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Extended Kalman Filter in robotics - Worth it?

I wonder if Extended Kalman Filter(EKF) is used in robotics, or is only Kalman Filter(KF) used in robotics. Kalman Filter is included in Linear Quadratic Gaussian(LQG) controllers. But how would EKF work i practice? I know how to build a Extended…
euraad
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