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Questions tagged [motor]

Without qualification 'motor' is usually taken to mean a rotary electromechanical motor, typically either a brushed or brushless design.

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14 views

How to use thrust bearing with shaft?

I know how to use radial bearings, e.g. ball bearings with shaft. But no matter how much I googled I didn't find any proper clear way to use thrust/axial bearing with shaft. I downloaded the thrust ...
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1answer
24 views

How to calculate the right needed Power?

Me and my team are building a robot and I need to calculate the Power of the motors. Through my research I found that I must know the needed torque for every motor and then convert it to electrical ...
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18 views

Move two DC brush motors at the same time using Kangaroo and Sabertooth

I had been doing a project which we are using kangaroo and sabertooth 2x32 to move two brush motors with an encoder. There are many obstacles that we overcome. from different signal, tuning etc., ...
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29 views

Why Drone flips over while taking off?

Noob here. Response is very much appreciated. I have built a drone based on apm 2.8. however, it doesn't lifting up and flip over when it start to fly. Can you please guide what could be the possible ...
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1answer
41 views

Moving clock arms individually

I have as project to build something like this ( using arduino if possible ): http://clockclock.com The one modelization that came across my mind is to take 2 sticks ( as clock arms ) and command ...
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1answer
22 views

Is there a table of DC motors in relation to weight/mass? I want to find the fastest for my build

I am building a line follower robot for a science competition, i have the weight of the components but i don't know what would be the fastest motor i could use to reach the best avg speed of the robot....
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3answers
27 views

A powerful pull/rotate device that provides a certain (controllable) force?

I don't know how to call the device I'm looking for (or need to create), maybe you can help me with terminology too so I can at least search.. I want something that either rotates or pulls with a ...
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1answer
26 views

Unlabelled pins on this L293D dual DC motor driver

I've got this board from a local store. It's an L293D based dual DC motor driver. All the pins are labelled except the 5 on the bottom as shown in the picture below. Couldn't find any datasheet or ...
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1answer
28 views

Do I have to use the CAN protocol that the motor controller uses in order to communicate with it?

I have a question about using the CAN bus to control motor controllers. Do I have to use the CAN protocol that the motor controller uses, e.g. CANopen CiA DS 301 CiA profile 402, in order to ...
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1answer
25 views

How to get the accurancy of the position system?

I want to build a system for positioning objects. It should be driven by a DC motor and a sensor should control the rotation angle. For the positioning I want to design (calculation) the accuracy. ...
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1answer
22 views

Max motor voltage for RoboClaw controller

The RoboClaw data sheet from ServoCity mentions various current limits, but what about voltage? Can I run a 110 Vdc treadmill motor?
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12 views

Configure dynamixel motors

I don't know where to post this. So maybe here. Sorry if it's not the right place, and please point me to where I can ask this kind of question. So, anyway, I'm trying to learn to control dynamixel ...
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1answer
43 views

Automatic forward and reverse Brushless Motor

The video Here shows a motor using rotational motion to move a load forward and then reverse back, without manually switching it to reverse. How can I program my brushless motor to operate like the ...
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2answers
64 views

Are all drone propellers compatible with all brushless motors?

I want to build a drone using these motors SunnySky X2212 KV1400 Brushless Motor For RC Drone FPV Racing Multi Rotor and these propellers DYNAM 2X RC Model Airplanes 9x5 Inch Nylon Propellers ...
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2answers
31 views

Am I calculating my drone's power consumption right?

I want to make an drone with these motors: https://www.amazon.com/XtremeAmazing-2200KV-Brushless-2212-6-helicopter/dp/B01M3UBGU9 1: First of all, are they good? If not, could you suggest me other ...
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28 views

Which motor is suitable for generating a constant pressure on objects?

I want to build a simple arm that can generate a pressure on a small object (a force of 50-100 gram is enough) and let go of it very quickly. Which motor can be used for this?
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1answer
26 views

I want to actuate a motor based on a wav file, but it has too many samples per second

I am trying to actuate a simple DC motor based on a wav file. At the moment I am using the "cat vs dogs sounds" from Kaggle. One of the wav files in this DB looks like this: These audio files are ...
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23 views

Servo malfunction

Summary I am making an automatic door for my chickens including a servo motor. In the process I actually shorted my 5V from my Arduino. The servo is powered by external batteries and only gets its ...
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1answer
38 views

Buying DC motors with fitting gears

I want to try a little project with an arduino controlled crossbow turret. Therefore I need some motors to move the turret and gears. Since this is my first try on such a project I am very unsure on ...
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1answer
150 views

control DC motor by Atmega and L298 code in Atmel Studio

I'm new to Atmel Studio. I used BASCOM-AVR until now. I know my question is very basic but I couldn't solve my problem by searching internet. I wrote a code in BASCOM (Basic laguage) to control two DC ...
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1answer
25 views

What is the motor that move like an elbow called

I'm trying to make wings that fold in and open. I want to have the joint of the wing controlled by a motor of some sort but I don't know what I'm looking for is called.
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36 views

Roboclaw node on ROS error: “Encoders None None”. Encoders can't be read properly. What might the cause be?

My two wheels robot was working properly with ROS Roboclaw node before changing a burnt Motor. After changing this motor with a similar motor, I reconfigured it as usual without touching the node or ...
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7 views

Power Supply; using a 24V battery for a 12V and lower components (duplicate)

Instead of a separate battery for motors and electronics, one 24V SLA series connection with different converters for the 12V motors, 12V camera, 5V arduino, etc Is this a practical alternative ?
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2answers
61 views

Calculate the inertia matrix of complex robotic mechanism

Motor, irregular rigid body of Different materials Forming a single robotic. For example, Industrial robot, every geometric shape of the link is very complex. But we can find inertia matrix form CAD ...
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1answer
36 views

Motor vs weight

I hope someone can help me out with please. Revolving platform on rollers. weight 800kg. Add car that parks on top . Weight 2000kg Total weight 2800kg to be rotated. 6x dc motors pushing against the ...
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2answers
71 views

Making a motor controlled joint passive

Anyone know of a good (and economical) way to make a motor controlled arm become a passive link on trigger? That is, the joint can be active (motor controlled) or passive (rotate freely). The tip of ...
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1answer
32 views

Why my stepper motor doesn't move when I attach a blade?

I wanted to use the NEMA 17 stepper to drive a blade/flapper that I have custom made for some physical application.As soon as I tighten the screw,the motor stops rotation in the usual way. Don't have ...
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1answer
36 views

How can a motor be run at higher voltage for longer?

A 12V windshield wiper motor to run at 24V for more speed but near-equal driving force. Testing with a variable DC supply between 21.6V & 26.4V showed the current maxes at 3.72 - 3.90A, as ...
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0answers
38 views

Tetrix Prizm and ROBOTC

I am currently trying to find if its possible to program a Tetrix Prizm motor controller with ROBOTC? Because I have an EV3 brain connected with the Prizm to a robot assembly with two motors, and I ...
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3answers
51 views

How to get constant motor RPM regardless of battery voltage?

I have a brushless motor with a propeller attached, driven by an ESC and a LiPo battery. I noticed that as the battery level drops, the motor spins slower, which makes sense. My question is is it ...
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1answer
173 views

How can I attach an arm to a double-flat drive stepper motor?

This is my first robotics experience, outside of one class 10 years ago. I've been Googling this question for about an hour but I can't find an answer! I'm using a ROHS Step Motor 28BYJ-48 (with an ...
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1answer
65 views

motor controlled lazy susan

I'm trying to figure out an easy lazy susan setup. This is for video production, I want to be able to put an object on the platter and get a smooth consistent turn in order to shoot the object ...
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1answer
33 views

Please help me with stall property of gear motor

i have read a spec. about gear motor and it shows that Stall: 9-13 Nm torque 25A max Per my understanding Stall torque is the maximum torque that can be applied to the shaft and cause the ...
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1answer
39 views

How many encoders should I have?

I'm planning a robot vehicle and plan to get one or more motors that have encoders built in. How many encoders do I need I really need in order to gather solidly accurate information about speed ...
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1answer
55 views

Why can't motors be as elegant as human muscles? Why do we have to use electromagnetism to create movement?

Pretty much as the title says. Why isn't it possible to build motors as microscopically and simply as they're built in humans? Why can't we recreate electronic nerves and muscles?
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2answers
158 views

What are the equations of a s-curve position path?

I have a decoupled mechatronic system with two motors. I want for each motor to give a s-curve path as reference. You can see in the image below the position path, velocity and acceleration. All ...
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3answers
239 views

Quadcopter motors vibration problem

I built an Arduino Due based quadcopter, with MPU-6050 for auto levelling and BMP-085 for Altitude. I am using Kalman filter code from here for the MPU-6050 to take the Roll and Pitch angels from the ...
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1answer
42 views

Power systems design for a vehicle

I'm designing a system to power up my vehicle with 12vDC and I have 8 motors each draws 25A at max and they are not expected to work always at the same time, meaning that in the maximum case 6 of them ...
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2answers
349 views

Encoder values for PID control

I'm working on a two-wheeled robot and I'm trying to implement a PID control for the motors. But I have a problem, all sources I found online said I have to calculate the error with my encoder values. ...
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1answer
140 views

Raspberry Pi Robot Car won't drive straight, right wheel is faster [duplicate]

My Raspberry Pi car bot will not drive straight at all. After examining and listening to the two motors, I noticed that the right wheel is a lot faster. I have matching wheels and the same code ...
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1answer
23 views

Will a change of motor driver improve motor performance?

I have this motor, from datasheet it works on the 6-12V range and has a no load current of 0.52A, and a stall current of 20A. I want to test the motor before buying an expensive motor driver. I have ...
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1answer
40 views

project to create a lighter wall [duplicate]

We are working in a project to help blind people cross the street alone .so ,Can I create a Virtual reality wall or a holographic 3d one that is visible in the Street and in all day times ?? ( morning ...
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2answers
285 views

Calculating torque required to rotate a platform

I am trying to spec out a motor's torque required to rotate a platform about an axis. This diagram makes it better to understand(it's like a rotisserie): Dimensions are in cm: I have an arbitrary ...
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1answer
42 views

Robotic Arm Senior Capstone. Electronics/Controls/Sensors Questions

I am a mechanical engineering student currently working on my senior capstone. My team of all MechEs has to build a robotic "arm" where the arm is really just a link/bar of aluminum. The thing we ...
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1answer
163 views

DJI E310 Thrust Coefficient

I am reading Denis M. Filatov et al.'s paper "Parameters identification of thrust generation subsystem for small unmanned aerial vehicles" (https://www.semanticscholar.org/paper/Parameters-...
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1answer
40 views

Calculate torque required to rotate and hold a platform

I wish to rotate a rectangular platform about its length. It is attached to a shaft that runs through the length of the platform at width/2. How can I compute the torque of the motor required to ...
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1answer
35 views

Rover style robots with less motors than wheels

In all of the designs that I have seen for rockie bogie suspensions, each wheel has a separate motor. Can a rover be driven with less motors? Does each wheel need to spin independently?
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2answers
104 views

Best way to estimate velocity of motor with encoder

I'm designing a PMSM controller with the motor has an optical encoder, so I can get position information from the motor. But how to measure the velocity of the motor. Now, my design is to calculate ...
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1answer
39 views

Tamiya Dual Gearbox attached to an Arduino Uno Board

I'm building a robot that uses the arduino uno microcontroller, and the tracks system is run by the tamiya 70168-Double-Gearbox-Kit. Each Tamiya motor only uses 3V which is fine but it seems the ...
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1answer
90 views

DC geared motors or leadscrew and motor for joints

I'm trying to build a quadruped robot. I studied dynamics and to get an idea, I read and watched papers and videos related to robots like ALof and StarlETH and some more. But since this is my first ...