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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2answers
213 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
37 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
99 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
57 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
2k 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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4answers
1k 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
45 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
1k 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
301 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
32 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
989 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
51 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
271 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
106 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
39 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
286 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
101 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
138 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 ...
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1answer
70 views

Getting error on serial monitor when using serial controlled motor

I am using this motor in a robotic arm. I wanted to move it to a position and the position was provided via an input but I am getting errors on Serial Monitor. Initially when I tried this , name of ...
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1answer
238 views

Controlling a dc servo with serial communication

I am going to buy this motor :- https://robokits.co.in/motors/encoder-dc-servo/faulhaber-coreless-17w-encoder-motor-120rpm-pid-dc-servo-drive?zenid=im3bp6grppt2f2ofdo2r6pq5c2 The datasheet of its ...
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2answers
159 views

Controlling Stepper or DC motor with L298 or L293 and getting operation similar to Servo for 6 dof arm

I will be using 1:4 gear ratio and thus will require a motor with a continuous 360 motion and a high torque for efficient functioning. Servo motors with continuous rotation and high torque are very ...
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1answer
109 views

What propeller to use for in-pipeline robot?

Currently im working on an in-pipeline inspection robot that can navigate through narrow pipeline. My design is to use a propeller at the back to push the robot forward. The front part of the robot ...
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1answer
41 views

6 motors with TB6612 driver + power requirements

I am looking at the ServoCity Bogie platform - it comes with 6 motors. The motor listed specs are: Suggested Voltage: 4.5 VDC No Load Current: 190 mA Max. Load Current: 250 mA I ...
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1answer
182 views

Recommendations and Advice - Motor Driver for 12V Gear Motor with Magnetic Encoder

I am building a robotic insect leg that would be actuated by 2 DC motors for pan and tilt motions. Total weight of the leg is about 1.5kg and 1m long (moment arm ~0.5m). Magnetic encoder would be used ...
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1answer
195 views

PID loop to control motor velocity with disturbances

I am trying to use a PID loop to control a motor. This is my first attempt at creating a PID loop (really just a PI loop). There doesn't exist a model for this system, and I don't know how to create ...
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1answer
29 views

Excessive Heat Coming From Video Transmitter and Motor Electronic Boards

I'm building a quadcopter and I'm finding that certain electronic boards are heating up beyond what I believe the heat should be. In this case I hooked up the video transmitter and then tested it. ...
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2answers
1k views

BetaFlight sees motors working, but motors not spinning

I am using FlySky i6 Transmitter and a FS-iA6B receiver. I have it set up using PPM and BetaFlight recognizes the motors in the Receiver section. All the values adjust according to the toggles and ...
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1answer
68 views

What part do I need to bypass the gearbox of a hoveround motor? Helical splined hub?

I have an old powered wheelchair motor from a Hoveround. I have removed the gearbox and I would like to attach a lawnmower blade directly to the shaft. As you can see from the photo, it has 7 helical ...
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1answer
24 views

What motor features should I consider for automated blinds?

Not sure if this is the proper community, apologies if not. I'm wanting to start a DIY project at home to automate my blinds through Alexa. I'm comfortable with the tech from the microcontroller up, ...
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1answer
35 views

Power delivery issue for our human following robot project

We are very new in the game of robotics and we are dealing with a power delivery issue for our motors. We are using two 12V DC motors to give motion to our robot. We are using the L293D motor driver ...
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1answer
1k views

L298N driver takes too much current

I'm using L298N motor driver to spin stepper motor (42BYGHM809). When connecting it to batteries(2*9v), the batteries heats up after few minutes and stop working, and when connecting it to power ...
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2answers
141 views

Controlling a servocity planetary motor?

I know this might sound like a stupid question, but I actually need help with this. So, I'm looking at this motor: https://www.servocity.com/2737-rpm-premium-planetary-gear-motor. I have a raspberry ...
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2answers
412 views

How to maximize stall torque of a motor

I'm looking to use 3-phase motor without gearbox for robotics application. It will always work at near stall situation never rotating more than 360deg. I'm looking for arrangement that will produce ...
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1answer
62 views

Control geared DC motor based on timing?

According to this video from Khan Academy about electronics of a DVD drive the position of the sled (which moves the reading head) is controlled by a geared DC motor by using only timing and one end-...
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1answer
46 views

Probably basic question about how control a DC motor

over the past weeks I was trying to figure out how use the information from hall sensor to control a DC motor. Basically this is the motor which I'm using: https://www.servocity.com/32-rpm-hd-premium-...
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1answer
403 views

How can I reduce vibration of motor pulley assembly?

My motor setup is vibrating too much for my intended project. Here are my assembled parts : ClearPath® - Integrated Servo System motor, p/n CPM-MCVC-2310S-RQN two Actobotics 15 Tooth, Flanged XL ...
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1answer
241 views

Using hall sensors to calculate position

I have a geared DC motor with hall speed sensors. I want to count signals from the sensor to get position of the motor. Hall sensor has resolution of 12 CPR. Gear ratio is 1:810, which means that I ...
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1answer
410 views

Relation between Power, Weight & Speed

Motor I am going to use these 100rpm 12Volt Motor supplied Power given below. Surface Surface will be Plain Wooden. Area of contact between 6 Tyre and surface would be maximum of 4cm2 in total. Use ...
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1answer
18k views

How much weight can DC Motor carry?

How much weight can following Brushed Motors carry together? 4X 12 Volt 100rpm supplied voltage => (5/17)*12 2X 12 Volt 100rpm supplied voltage => (7/17)*12 These motors are basically the wheels for ...
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2answers
72 views

How many stages necessary to stabilize position while controlling torque?

I'm assuming that since torque translates into acceleration, the basic transfer function from torque to position becomes $1/s ^ 3$ Does this mean that 3 pid controllers are required to properly ...
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1answer
74 views

unexpected inefficiency of a motor driver

I purchased one of these motor drivers and noticed that i was not getting as much time from my battery as i had expected. I tested the current draw when connecting my motor directly to the battery and ...
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1answer
38 views

Identifying the connector on a micro planetary gear motor

I have purchased a couple of nifty little planetary gear motors and would like to incorporate them into my next project. could anyone help identify whether the connector is a commonly used one an ...
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2answers
1k views

How to reduce the small free rotation/movement of a stepper motor shaft?

I was successful in running a 28BYj-48 stepper motor with 4096 steps per revolution. I am happy with the result. But there is a free movement of the motor shaft itself - you can move the motor shaft ...
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2answers
2k views

Scara robot design

I found this drawing on google photos: I don't understand why he used this part. Is it for reduction? What is its equation?
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1answer
38 views

Help with DC Gearmotor Specs

I need help understanding the specs of this RS Pro DC Geared Motor, Brushed, (RS: 238-9670). It has an operating range of 4.5-15V and a nominal voltage of 12V, so does that mean that it provides 0....
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1answer
43 views

Calculating motor power and motor needs for 200 lbs load

I'm trying to make a load carrying robot which will follow a line and will have capacity to carry 200 lbs on concrete surface. What should be the horsepower for electrical motor to handle this on 0 ...
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1answer
113 views

How do i figure out how much thrust an 150cc Size Brushless Outrunner Motor will output with propellers? [duplicate]

I need to know this as i'm trying to figure out if two of these could lift approximately 170 pounds of wheight. And that's includig batterys and the motors.
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2answers
996 views

DC geared Motor 20 NM 25 RPM small dimensions. [closed]

My application requires a DC geared motor with torque of 10 NM - 20 NM and low speed (25 RPM at most) and a small dimensions (120 mm length at most). I failed to find my specs at eBay, and Alibaba ...
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2answers
5k views

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 ...

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