0
votes
0answers
7 views

Why is this ESC sending a spin down to my motor? [on hold]

I've set the config for my ESC to take a range of 20-180 PWM from my arduino. It works as ...
3
votes
1answer
26 views

Understanding and correct drift when using BreezySLAM (aka tinySLAM / CoreSLAM)

I was looking for a Python implementation of SLAM and stumbled upon BreezySLAM which implements tinySLAM aka CoreSLAM. My robot is equipped with the hokuyo urg-04lx-ug01. I have odometry hence ...
1
vote
1answer
16 views

What are the specifications of the digital compass used in iPhone 6S

Specifications of the digital compass used in iPhone 6S? I am trying to measure the yaw using magnetometer. I observed the magnetometer/digital compass in iPhone is really very stable. The north ...
1
vote
1answer
24 views

Battery damaged?

Could you please see the attached battery images and tell me that if it is safe to continue using this battery or should I discard it? Regards
0
votes
0answers
19 views

Real life application of a drawing robot rather than as an artist [on hold]

What are the real life application of a drawing robot rather than as an artist.While implementing as a project what is technical relevance of the robot.
0
votes
0answers
10 views

Optical flow details about camera [migrated]

I'd like to use an optical flow system to get velocities from surrounding environment. I've read papers about how optical flow works, but they don't treat details about optic sensors. My question is: ...
0
votes
0answers
16 views

How to select proper stereo vision camera [on hold]

I want choose a stereo vision camera for navigation and obstacle avoidance of a boat robot in outdoor condition. what type should i choose?
0
votes
0answers
15 views

Robot kit for starting in robotics? [on hold]

Im looking for a robotics kit, I want something like a lego, so I can make different robots, but seems the lego Mindstorms see too basic for me. Im searching for something that can be programmed on C/...
0
votes
0answers
7 views

Granite Devices - hollow shaft brushless DC servo motor [on hold]

Does anybody knows a hallow shaft AC/BLDC servo motor compatible with IONI servodrive ?. The system is is used for positioning. Thank you.
0
votes
0answers
22 views

Dynamic analysis of 5-bar linkage in variable velocity [on hold]

How do I go about the Dynamic analysis of 5-bar linkage in variable velocity?
2
votes
1answer
30 views

PID Gains: Drop in control loop rate, need to retune?

Good Day, I am working on an autonomous quadcopter. May I ask if there is a significant difference if my control loop dropped from 500Hz to 460Hz due to added lines of code that would require ...
0
votes
0answers
10 views

Granite Devices: Example of using SimpleMotionV2 [on hold]

How i can use SimpleMotionV2.dll in C# code. I have a problems with smSetParameter function in crash with message "Attempted to read or write protected memory. This is often an indication that other ...
0
votes
1answer
18 views

SLAM Libraries for iRobot [on hold]

Are there any SLAM libraries that don't require expensive sensors? Looking for something where an IR sensor would do
1
vote
0answers
26 views

Q Learning And Kohonen Maps For Line Follower Robot

I'm trying to build a line follower robot and I'm interested in predicting the curves on the track. I have 8 binary sensor array(qre1113). How can I integrate a system like Q learning and how can I ...
-1
votes
1answer
45 views

Fourmola for speed and direction [on hold]

What is the fourmola of direction and speed of 4 wheel robot like small size soccer robot and what's the proof of that to I can make new fourmola for 3 wheele robot I want to give a degree to the ...
1
vote
1answer
48 views

quaternion implementation

I am trying to implement quaternions and i am using CC2650 sensortag board from TI. This board has MPU9250 from invensense which has Digital Motion Processor (DMP) in it. This DMP gives quaternion, ...
0
votes
0answers
17 views

vex robotics components needed for linear slide robot [on hold]

I would like to build a robot that will move on linear tracks along a few meters and stop periodically every 2-3 decimeters along the way. After it reaches the end, it should return to the starting ...
0
votes
1answer
48 views

Autonomous path finding saving the scientist from danger zone [on hold]

I have been working over a robot which is two encoded motor driven. And the bot is provided the location of the scientist in a SD card. Robot has to decide the path and get to the scientist and place ...
0
votes
1answer
28 views

proportional integral and defferetial code for nxt2.0 [on hold]

hi my team is going for a line follower competition this September can someone help me write a pid code for my robot .the robot is a nxt 2.0
0
votes
2answers
30 views

Typical laser scanner noise values

I am building an application that executes graphSLAM using datasets recorded in a simulated environment. The dataset has been produced in MRPT using the GridMapNavSimul application. To simulate the ...
-1
votes
1answer
85 views

Autonomous Navigation without Distance Sensors

I'm doing a project with the iRobot Create 2. I want it to be able to map out a room and navigate to a point for example. My problem is that the robot doesn't have any distance sensors. What it can do ...
2
votes
3answers
89 views

Localising a robot placed at an unknown position in a known environment

I am a third-year electrical engineering student and am working on an intelligent autonomous robot in my summer vacations. The robot I am trying to make is supposed to be used in rescue operations. ...
0
votes
0answers
17 views

SLAM with iRobot Create 2

I have an iRobot Create 2 and have been working with it and have gotten to the point where I can control it via Bluetooth. This is great but I also want it to be able to be autonomous and navigate ...
2
votes
3answers
50 views

Is horsepower related to torque in electric motors? [on hold]

Is torque related to size or power at all in electric motors? And what about gas motors too? I have a go kart that is 2.5hp and it's 50cc and its about 1ft x 2ft x 1ft in size. I also see online ...
-2
votes
1answer
69 views

When was the first time a robot killed a human? [on hold]

Scott Adams, creator of Dilbert, recently shared an article about a robot the police used to kill a suspect by detonating a bomb in close range. This made me wonder -- when was the first time a robot ...
2
votes
1answer
47 views

is it possible to get all possible solutions of inverse kinematics of a 6 DOF arm?

I would like to know if there is any way to get all the possible solutions of inverse kinematics of a 6 DOF robotic arm? I have found some good Matlab codes but gives only one solution like in Peter ...
0
votes
1answer
13 views

how to connect more than one l293d to drive a 3.3 A stall current motor? [on hold]

i need to control a 12v motor that has a 3.3A stall current it is an RC car and avoider
0
votes
0answers
33 views

OpenRAVE output torques and simulation timestep

I'm using OpenRAVE to simulate a quadruped, in order to get an idea of torque requirements. To get started I made a single DOF, single link pendulum to test controllers etc out on. I've whipped up ...
0
votes
0answers
19 views

Design of SCARA joint problem? [closed]

I'm trying to make scara robotic-arm to be as a platform to 3d printing and laser engraving. My problem is how to design joint like I've seen in flexarm on kikstarter. My solutions: Harmonic ...
3
votes
2answers
56 views

Difference between 3D Camera(using IR projection) and Stereo Camera?

I am currently busy with a final year project which requires me to track people walking through a doorway. I initially thought this may be possible using a normal camera and using some motion ...
-3
votes
2answers
77 views

what books do you suggest for a beginner like me ? [closed]

i am studying bacholar of dental surgery but have intrest in learning this subjet so tell me about a good book to read.
0
votes
1answer
46 views

12 volt input to 5 volt ouput of Arduino

I accidentally ended up supplying 12 v to the Arduino 5v output pin instead of the Vin pin. Does that mean that I can't use the 5v output pin anymore i.e. its fried?
0
votes
1answer
13 views

RVIZ Transform error Base_link and Camera_link

I am working on a differential drive robot with two motor wheels with encoders and caster wheels. The robot also has a intel realsense depth camera. When I launch RVIZ : Thee Global option > Fixed ...
0
votes
1answer
35 views

CompressedImage to an Image in a node

Update Hey I have the following subscriber on Nvidia TX1 board running on an agricultural robot. we have the following issue with subscribing to Sensor_msgs::Compressed: ...
4
votes
2answers
62 views

Lidar problems in a multi-robot setup

Consider multiple mobile bases driving around in some area. In order to get meaningful data from the lidar of each base, the sensors should be mounted as horizontal as possible. Due to safety ...
4
votes
2answers
60 views

Question about what motor to use for opening window

first off, just to be transparent, I'm a total newbie when it comes to DC motors (and pretty much anything robotic). I've got a couch that's right up to a window with the lever type openings (...
0
votes
0answers
19 views

Using a six wire stepper motor with l298n

i am using a l298n IC and (not a driver shield) and an arduino. I would like to know how to use the IC with the arduino to run a six wire stepper motor. Apparently i am new to electronics.Can i have ...
0
votes
1answer
24 views

Mounting a gimbal BLDC motor [closed]

I'm trying to build my own motorised camera gimbal using a BLDC like this, where the shaft is hollow. Does anyone know how the camera platform should be mounted? Should a shaft be somehow pressed into ...
0
votes
2answers
27 views

What is the thread/screw size for the iRobot Create 2 internal screw bosses described in the Open Interface Spec doc

In the “iRobot_Roomba_600_Open_Interface_Spec.pdf” provided for the iRobot Create 2, there is a section titled “Roomba Internal Screw Boss Locations”. It states that “Screws may be replaced with ...
1
vote
1answer
26 views

Stereo Vision Using Compute Module: Pi camera synchronization

Good day, I am currently working on an obstacle avoiding UAV using stereo vision to obtain depth maps. I noticed that the quadcopter would sometimes not steer to the correct direction. I am using ...
2
votes
2answers
63 views

Path planning of 2 arm 4dof Robot

I am working on path planning for a 2 arm 4dof (2 dof for each arm) robot. I am currently using a centralised planning methodology (considering the multi robot system as a single one with higher dof, ...
0
votes
1answer
37 views

How does a QuadCopter Startup work ? Will they tune every copter before releasing to market?

We know that a quadcopter needs to be tuned to its perfect PID values to minimise the pitch, roll , yaw errors and etc., Before releasing to the market will they tune every unit and ship it ? Or a any ...
0
votes
0answers
23 views

Relay to power ESC [migrated]

I am want to create a switch that will power my microcontroller as well as the 2 ESCs that control two brushless motors. The ESCs run at 30A thought the motors only require 13A. I am thinking to ...
2
votes
1answer
32 views

Find object using only distance

I'm working on a extremely simple robot (very first project) that attempts to find the source of a Bluetooth signal. There are two motors that drive the platform and each has an encoder. We've already ...
1
vote
4answers
69 views

Dynamic torque simulation for a 6 DOF robotic arm

I am working on a 6 DOF robotic arm(industrial manipulator). I have the basic structural specs (dimensions, weights etc) for the links and joints with me. Basically, I want to simulate both static ...
2
votes
2answers
115 views

Steering using different speeds in DC motors or using a servo?

I am trying to assess the pros and cons of steering a robot car using different speeds of 2 or more DC motors versus using a servo and a steering mechanism? From your experience which is better in ...
4
votes
2answers
104 views

Obstacle Avoidance while Navigating

I need some ideas for strategies or algorithms to apply on these strategies to perform obstacle avoidance while navigating. At the moment I'm doing offline path planning and obstacle avoidance of ...
4
votes
2answers
76 views

Fence avoidance for manually controlled robot

I'm trying to find known techniques for keeping a manually controlled robot within a known polygon fence. More specifically, a pilot controls a robot by issuing desired velocity vectors, and the ...
0
votes
0answers
26 views

Compass sensor for robot

What's an appropriate compass sensor to use on a robot? There are a ton of cheap digital compass sensors, and I was thinking of using an MPU9250 combined accel/gyro/magnetometer as a compass, but I'm ...
0
votes
0answers
14 views

Doosan lynx 220 where to find inputs and outputs

I want to add an robot to my machine the Doosan lynx 220 lsy. For that I need this inputs and output: INPUTS: Cycle start, Chuck1 open, Chuck1 close, Chuck2 open, Chuck3 close OUTPUTS: Cycle ...

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