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Questions tagged [motor]

An electrical actuator that converts electrical energy into rotational motion or sustained linear motion (linear motor). There are many types of electric motors. If the specific type of motor is known, it is helpful to use or add a more specific tag, such as dc-motor, brushless-dc motor or induction-motor.

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874 views

PWM above 16v for speed control? Will it work?

I have recently ordered 1 x VNH3SP30 Motor Driver Carrier MD01B I was just reading the charts and found below saying about the pwm, VNH3SP30 and VNH2SP30 Comparison: VNH3SP30 VNH2SP30 ...
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2answers
3k views

Arduino Motor Control with L293NE

I am trying to build a simple motor controller for a 3v hobby motor ( http://www.radioshack.com/product/index.jsp?productId=2102828 ) that I picked up at Radio Shack. I am using the L293NE (...
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2answers
3k views

Can Arduino Mega handle 6 motors independently

I wonder if anyone can help me I am modifying an ROV and thinking of using Arduino Mega I am new to electronics and robotics and wonder if the Arduino Mega can control 6 DC motors independently as ...
9
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4answers
6k views

DC Motor control with an Arduino

This might be a simple, silly question, but I am wondering why I can't just connect a DC motor to an arduino board to have it running. One pin to the ground and the other to one of the PWM outputs. I ...
3
votes
2answers
601 views

Sourcing low torque/small stepper motors

I am looking for some small and cheap stepper motors with <10oz-in torque. Most of the steppers I can find from my regular sources/ebay are 60-1000oz-in which is far too much for my purposes (and ...
5
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4answers
11k views

Can you run a BLDC motor backwards without damage?

Can you run a BLDC motor backwards without damage? Is it OK to drive a model airplane BLDC engine backwards while landing, so it gets a little "reverse thrust" and come to a stop a little quicker on ...
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2answers
1k views

DC Gear motor Operation

I just bought a DC gear motor- I'm trying to spin a 20 pound disk. I realize I need to hook it up to a power source, but I'm having trouble figuring out the proper source. PS I also got a DC speed ...
5
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4answers
3k views

Driving a DC hobby motor using an AVR and a single power supply

I've recently begun experimenting with AVRs and am keen to progress beyond making blinkies to making things move. I've tried to start with something easy, but it seems I'm already foiled! What I'd ...
5
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3answers
3k views

H-Bridges and Motor Stall Current

How do I determine how powerful an H-Bridge I need to control a DC-motor? In particular, does an H-Bridge need to be able to supply the full amount of current a motor will use when stalled, or would ...
11
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2answers
8k views

Continuous rotation 'servo' vs DC motor

Under what circumstances should I prefer a continuous rotation 'servo' to a DC motor, or vice versa? It seems to me that to use a DC motor, I'm going to need three pins from an MCU -- two for forward/...
5
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4answers
3k views

How does the Linistepper, open source linear Stepper Motor Drive work?

I have been trying to get the Linistepper to work, however I can't seem the understand the working of the circuit. The circuit is here. The issues that I'm unclear about are: What are the ...
9
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4answers
618 views

Precise motor positioning

I am trying to make a device that uses several motors all with an arrow fixed on top that has 8 fixed positions (N,NE,E,SE,S,SW,W,NW). I am trying to avoid servos and steppers because of the price, so ...
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3answers
28k views

Is it possible to drive a stepper motor greater than 1000 rpm?

How could I achieve this? What are the stepper motor facts and principless that I have to keep in mind to design a circuit to achive this goal? Are there any readymade/open source alternatives and ...
6
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3answers
8k views

Is there any way to determine the correct voltage for a stepper motor?

I recently bought a CNC mini-mill at an auction. It is fitted with steppers on the three axis. The X and Y are the same, and the Z is a bit smaller (physically). All the markings were removed from the ...
6
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2answers
2k views

Can I combine the power supply?

Here's the circuit I'm working on, it's a robotic stringed musical instrument thing, that uses 6 DC motors and an Arduino Duemilanove - The resistors are 0.25w 1KΩ The transistors are TIP122 ...
9
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2answers
394 views

Batteries for 12- to 24-V motors

I have some nice gear motors that run on 12 to 24 volts, and want to use them in a medium-sized mobile robot -- maybe 30 cm * 30 cm for the base. I only expect it to run indoors, or possibly outside ...
25
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6answers
17k views

How do I physically work with a hobby motor?

How do I incorporate a hobby-style motor into a project, physically. How do I mount it and connect a wheel to it? (Assume that I have a working H-bridge or even switches, and am not concerned about ...
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1answer
1k views

Arduino Speed Controllers for RC Cars

This may be a lame question but, Speed controllers on big RC cars can they be controlled from Arduino? If yes, do they have a standart? do I control them using PWM values? What should i look for if I ...
2
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2answers
1k views

Arduino Ardumoto

I am using Arduino and Ardumoto dc motor controller to drive a DC motor. I am kind of at lost because i have gone through 10 different motors. They either don't work( not enough power ) or not ...
3
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2answers
531 views

Slowing down a motor - Mousebot

I put together the a Herbie the Mousebot the other day and he is FAST! Too fast to demonstrate in a small area. Have a look a this video to see just how he zips around. Documentation: Mousebot So ...
7
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2answers
2k views

BLDC and three phase inverter

I want to run/control a BLDC motor from a DVD/CD-rom player and found a schematic how to do this, the so called three phase inverter (see right schematic on this page: http://en.wikipedia.org/wiki/...
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6answers
28k views

Very Slow Electric Motor

A customer has asked: I want to slow down a small hobby sized DC motor to a user variable range that runs from slow to zero RPM. I would simply use a wall wart for a power supply and a ...
8
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5answers
501 views

Good motor supplier?

I'm looking to start a few different projects and stock up on some basic components - I was just wondering if anyone knows a good supplier of DC motors, stepper motors and servos? I'm in vicinity of ...
8
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5answers
1k views

Synchronise multiple Mega boards to run multiple servo motors

My friend Jules asks: The aim is to get as many servo motor controls as possible - looks like the maximum an Arduino will output is 14? Digital I/O Pins54 (of which 14 provide PWM output) I ...
2
votes
4answers
3k views

Controlling DC (Pager) Motor with Audio Signal

I'm trying to control a DC (pager) motor with a sound signal so that I can use an audio synthesizer to control the speed of the motor. I'm hoping to modulate the speed of the motor at audio rate (1-...
8
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3answers
355 views

Measuring force developed by a robot

I've been playing around with a Lego Mindstorms NXT robot, gearing it for speed and power. To my dismay, when geared for power, it wasn't any harder to stop than when geared for speed -- I suspect ...
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11answers
17k views

I'd like to learn how to make my own USB gadgets

I've been writing Linux character device drivers for other people's stuff for some time. I'd like to find a new hobby and the thought of making my own USB gizmos seems really neat. I would be ...
27
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6answers
63k views

How to drive brushless motor with Arduino?

Is it possible to drive a brushless motor directly with Arduino? Or should I revert on controlling a brushless motor ESC with PWM pulses?
11
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3answers
5k views

Arduino Stepper Motor

How do use use an Arduino with a Stepper Motor?