Tagged Questions

1
vote
3answers
85 views

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

Hi all, 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: …
0
votes
2answers
123 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 …
1
vote
4answers
390 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 …
3
votes
2answers
175 views

Can Arduino handle 6 motors independently

Hi guys, 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 …
3
votes
4answers
334 views

DC Motor control with an Arduino

Hi, 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 o …
2
votes
1answer
52 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 fo …
6
votes
5answers
2k views

How to drive 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?
6
votes
4answers
970 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 RPMs. I would simply use a wall wart for a p …
1
vote
4answers
205 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 …
5
votes
5answers
323 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 ? http://arduino.cc/en/Main/ArduinoBoardMeg …
4
votes
2answers
327 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 MC …
4
votes
3answers
363 views

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

Hi everyone, 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 see …
2
votes
2answers
76 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 als …
1
vote
3answers
231 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 whe …
6
votes
4answers
149 views

Precise motor positioning

Hi all, 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 step …

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