Questions tagged [design]

Mechanical, electronic or programmatic design of a robot.

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Difference between form closure and force closure

What exactly is the difference between both the above terms? From some of the papers I realize that force closure depends on the frictional forces. Is it correct? Suppose I to grasp a cylindrical ...
qwerty123's user avatar
1 vote
1 answer
277 views

is designing a pcb with multiple controllers a good schematic design?

I am trying to design a bot, it has to measure the temp I am using an 8051 so the adc is taking up a lot of i/o pins so I am thinking of switching it out with a thermostat or put another controller ...
Krithika Baskaran's user avatar
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2 answers
2k views

Line follower robot with 2 or 4 motors?

I am developing a line follower robot and I am not sure about how many motors should I use: two or four. I'm thinking of using four, but I do not know if it's worth it (it will let the car be heavier, ...
Willian Lopes's user avatar
0 votes
2 answers
136 views

Permanent Magnet DC Motor Calcuations

I have to determine speed and torque suitable for my combat robot. I've done some calculations and I need to know whether they're right or not (because they don't seem to be right). Suppose I have ...
Deep's user avatar
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4 votes
2 answers
77 views

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 ...
GracefulLemming's user avatar
1 vote
1 answer
95 views

Is this large bipedal robot real or realizable?

I saw this link today. This robot seems real, but redditors on a reddit thread argued that it might be CGI. It doesn't seem unfeasible to make such as robot IMO. There isn't anything out of the norm ...
drerD's user avatar
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3 votes
1 answer
223 views

Comparison of Balance Bot design

I'm planning to build a Balance Bot and I would like to know which design should I go with. There's a vertical design such as the ArduRoller and on the other hand, there's the typical stacked type of ...
user87877's user avatar
1 vote
0 answers
77 views

Mechanism to oscillate a human leg? [closed]

I'm working on creating a robotic device capable of oscillating an adult human leg using the knee as pivot, being able to constrain the amplitude of oscillation by controlling the mechanism with a ...
Jaime Centeno's user avatar
1 vote
1 answer
56 views

Design in the robotics world [closed]

Apologies if this isn't really the right place to be asking, but I was wondering whether third party design firms are ever contracted to design industrial and or consumer robots? If not is it ...
matt's user avatar
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4 votes
1 answer
1k views

How to get manufactured part from CAD file?

I am working through the book Learning Robotics using Python, which is for Python programmers who want to learn some robotics. Chapter 2 shows you how to use LibreCAD to design the plates and poles ...
neuronet's user avatar
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2 votes
1 answer
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Choosing the right Mecanum wheel

I am part of my college robotics team which is preparing for Robocon 2017. We have used Mecanum wheels in last Robocon competition, but we have faced huge slip and vibration. I have looked for all ...
Ryder's user avatar
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Considerations to design actuators, and loop feedback systems, for a robotic arm [closed]

Let's say I have an industrial sized 6DOF robotic arm. I want to control each one of the six joints despite the non-linearity produced by the chain structure, the gravity and the weight of the loads ...
Robin's user avatar
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1 vote
2 answers
1k views

3 way check valve

I am working on a micro dispensing system, using syringe pump. The design involves a syringe on top to be moved by stepper motor. There would be one liquid reservoir form which the syringe would pull ...
Muzammil's user avatar
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0 votes
1 answer
282 views

Sphero's logic, how does it work

I'm willing to make my first robot, and I'd like to make one similar to the Sphero. I know I have to add 2 motors in it, and make it work as a hamster ball, but I don't understand how I can make it ...
FET's user avatar
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1 answer
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Is Venetian mirror possible in Autodesk Inventor? [closed]

I see there are things like glass and mirror in Autodesk Inventor Professional 2016 but is there a possibility to have Venetian mirror? So that from one side it would look like a mirror and from the ...
Defozo's user avatar
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556 views

Recommendation for 3D mechanism modeling and simulation software

I'm working on a robotic hand and I would like to simulate different joints and tendon insertion points before starting to actually build it. I've been googling and found things like Solidworks and ...
jotadepicas's user avatar
1 vote
3 answers
344 views

Dynamic simulation of compliant elements in quadruped robot

I have a preliminary design for a legged robot that uses compliant elements in the legs and in parallel with the motors for energy recovery during impact as well as a pair of flywheels on the front ...
wyverniv's user avatar
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2 votes
1 answer
152 views

Automatic sliding window shutter

I want to build an automatic sliding window shutter and need help with part selection and dimensioning. Some assumptions: window width 1.4 m sliding shutter weight 25 kg max speed 0.07 m/s max ...
tauran's user avatar
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0 votes
1 answer
417 views

Create 2 CAD files

I found CAD files for the Create on the ROS TurleBot download page (.zip), and shells on the gazebo sim page. Any ideas where the files for the Create 2 could be found?
phreed's user avatar
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0 votes
2 answers
827 views

differences between SCARA arm design

I am currently interested in SCARA arm designs and I have few, beginner questions for which I didn't find answers yet. 1/ While comparing professional arms (made by epson, staubli...) I noticed that ...
LiohAu's user avatar
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2 votes
1 answer
2k views

What is torque bandwidth in actuated joints and how does it affect the control systems?

The rest of my student team and I are in the process of redesigning an exoskeleton and building it based on an existing one. From the papers that we have been reading there are some references to low, ...
Ortix92's user avatar
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0 votes
2 answers
108 views

How can I control fast real time sensor (250Hz) with slow system display(60Hz)

We do some experiments of real time representation of sensor position on TV. In this experiments, we used sensors for collect real time position in 3D at 250Hz and TV for Display the sensor position ...
Rushik Thumar's user avatar
0 votes
1 answer
97 views

What factors should i consider when selecting a motor for a free wheeled cart-pole balancing robot?

I'm developing a small scale cart-pole balancing robot consisting of two wheels driven by a single motor at the base (essentially like a unicycle, but with two wheels to constrain balance to a one ...
Paul's user avatar
  • 1,268
4 votes
2 answers
143 views

Air hockey with a robot as an opponent

I'm not sure if this is the right place to post this but here goes. So, as the title states, I'm planning on building a desk that doubles as an air hockey table which has a robot on the other side. ...
kdyz's user avatar
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4 votes
2 answers
86 views

How do I dispense a greasy fluid?

I'm a agricultural engineering student and complete newbie trying to build a simple mechanism attached to a drone that dispenses a grease-type fluid. However, since I'm not familiar with the field, I'...
Tiago Pereira's user avatar
4 votes
1 answer
401 views

MCU architecture design

Are there any standards regarding single vs multiple MCU in a robotic system? More specifically, if a single MCU can handle all of the sensor data and actuator controls, is it better to use a single ...
Damjan Dakic's user avatar
2 votes
1 answer
6k views

Type of servo and torque calculation required for a 2axis robot arm

I am trying to build a 2-axis robot arm with pan and tilt mechanism. The gripper/holder will hold an object weighing 300 grams. The total weight of the arm including the motors will be around 2 kg. I ...
Abinaya's user avatar
  • 21
2 votes
2 answers
114 views

How to make door opening to the top

I need to make this construction (door is closed by default, door is opened to the top). This is the scheme: Red rectangle on the picture is the aperture, blue rectangle is the door (weight is about ...
Alex Antonov's user avatar
2 votes
1 answer
192 views

Inverting a transform (Reading J Craig's book on Robotics)

From Introduction to Robotics by J.J. Craig, chapter 2, Page no. 36: Could anyone explain how that equation was derived/formed? I am stuck on this page due to failing to understand where the equation ...
Prasanna Deshpande's user avatar
2 votes
2 answers
387 views

Stewart platform as robotic wrist joint

I'm planning the design of a wrist for a humanoid robot. I would like to choose a design that is sturdy while allowing for dexterity comparable to a human wrist. One option that was presented to me ...
Gunther's user avatar
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-2 votes
2 answers
97 views

Artificial Intelligence Software Packages: Professionals, University education is oft' a step behind. What's actually being used? [closed]

Currently using Windows 8, what software packages for artificial intelligence programming (robotics branch) are used in today's professional environment as standard. Lots of internet suggestions, but ...
cyb3rm0d's user avatar
0 votes
4 answers
886 views

What is the cheapest way to detect and identify vehicles entering a gate in real time?

I want to detect and identify each of the vehicles passing through a gate. I have the live video feed of the gate which I initially thought to process and detect the number plates with the help of ...
Thunderstruck's user avatar
2 votes
2 answers
268 views

idea for web application in robotics [closed]

I am learning and I am interested robotics, but also I need to update my web development skills so the question is - is there any idea for good web application that could be connected with robotics - ...
TomR's user avatar
  • 359
0 votes
1 answer
2k views

Mechanical design for base of robotic arm [closed]

I am using DC motors to build a robotic arm. I want to make the base shoulder (which rotates and lifts) more stable and stronger. How should I design this using DC motors? Also I would like to put ...
Ravi Vashisth's user avatar
0 votes
1 answer
416 views

Programable Drone with robotic arm and hand?

I was just wondering if it was possible to buy or build a programmable drone with a robotic arm,hand, knife. I want to program a drone to harvest crops. -object recognition from live video stream to ...
JerryA's user avatar
  • 1
3 votes
5 answers
582 views

Quadcopter frame design

Quadcopter frames seem to consistently follow the same X design. For example: I'm curious to know why that is. It certainly seems like the most efficient way to use space but is it the only frame ...
dalton's user avatar
  • 33
1 vote
1 answer
89 views

Square with hinge on all four sides

I want to make a component that will be a square plate that will behave like it has a motorized hinge on all four sides. That is, it can "open" by pivoting around any one of its four sides. I want it ...
ItsAmy's user avatar
  • 111
4 votes
1 answer
83 views

How important are events like "Robocup" to the advancement of Robotics in general?

Are events like Robocup advantageous to the development of robotic advancement? Or is it merely entertainment which advances robotics by allowing entry level participation which helps maintain ...
Frank's user avatar
  • 138
2 votes
1 answer
558 views

Verifying motor selection calculations

I'm trying to select a brushed DC motor for a project. I tried following the advice on sizing electric motors, mentioned in this question, but a few details were missing, and I'm unsure if I properly ...
Cerin's user avatar
  • 284
0 votes
2 answers
68 views

What is the cheapest way to make led sensitive to sound around?

There is always a way to do this using arduino, rasberry pi etc. However, in many cases in discussion in forums i've come across things where whole 'logic' can be uploaded to $0.50 chip. Instead of $...
Muhammad Umer's user avatar
1 vote
0 answers
61 views

Heavy omnidirectional platform suspension

I'm planning to build an omnidirectional platform that will support about 180kg robotic arm. The platform will be equipped in meccanum wheels. I would like to have some kind of suspension to avoid ...
mactro's user avatar
  • 953
1 vote
1 answer
58 views

How to distribute tension load on a three footed claw?

Good day! I am helping my little ones 6 and 7 to develop a robot that can pick up and stack cubes three high as well as gather blocks. They came up with the design that enables them to pick up ...
user9072's user avatar
1 vote
1 answer
50 views

PCB making at home [closed]

I've made many PCBs at home but still there are some mistakes. I tried ironing, drawing methods but it doesn't work very well. I use eagle CAD for design PCBs. Please help me.
MELI's user avatar
  • 9
0 votes
1 answer
215 views

Lifting Robot To Lift Small Crates [closed]

I am trying to design a robot to lift tote-crates and transport them around in a localized area. I want to be able to carry 3 tote-creates at a time. This robot needs to be able to pickup the creates....
Alex Pelletier's user avatar
3 votes
5 answers
2k views

Why Make Bipedal Robots?

A friend and colleague of mine who studies robotics says that bipedal robots present much greater challenges for stability and locomotion than those with more legs. So why is there so much effort to ...
capybaralet's user avatar
4 votes
1 answer
6k views

How to find a solution for quadcopter PID control

I've built a quadcopter and a rig to safely test it on. I'm working on the PID for controlling the roll pitch and yaw. I understand how a PID works on a more simple plant like say a robot with wheels ...
Aage Torleif's user avatar
4 votes
1 answer
1k views

Submarine screw and the isolation from the water [duplicate]

How does the submarine prevent water flow through the screw mechanism? The mechanism rotates the screw so there should be a little gap, how come the water doesn't come through this gap in to the ...
Developer Marius Žilėnas's user avatar
3 votes
1 answer
736 views

Linear slider motor mount location - Pros/cons

I'm currently designing a linear camera slider, that will be used to hold camera equipment weighing just about 15 Kgs including all of the lenses and monitors and everything else. For those who don't ...
dsignr's user avatar
  • 133
0 votes
2 answers
2k views

What are the calculations for a badminton robot and mechanisms?

I am designing a badminton robot but i am very confused about mechanisms needed for a badminton robot and various calculations needed for millisecond response.I am also confused about calculations ...
Niks's user avatar
  • 21
1 vote
1 answer
142 views

What type of mechanism is this?

Held and rotated by the knurled ends, one in each hand, the silver spokes rise and fall in order for the assembly to rotate. What is it, some companies' salesmen show tool? Found in an old building, ...
Mazura's user avatar
  • 113