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2
votes
2answers
197 views

Use Micro-Controller Instead of ESC

I was wondering if I could use something like microcontroller instead of an ESC. I tried finding tutorials on Google and YouTube and I couldn't find anything useful. Could you please help me? P.S. I ...
3
votes
3answers
236 views

What is the use of PWM over brushless control

I just saw this question How do I eliminate PWM noise when driving a fan? but cannot think of the reason why is doing PWM over brush-less control useful. I am assuming people are trying to control ...
1
vote
0answers
259 views

How to drive dualsky ESC with arduino PWM? (Brushless motor)

I've recently received 4 Brushless motors, 4 brushless ESC's and 2 LiPo batteries. I managed to run the motors with my arduino and the servo library, but I'm not getting optimal results. I was ...
0
votes
1answer
263 views

Test ESC using a Servo Tester

I'm trying to test my 20A Hobbywing skywalker ESC. For that I bought this servo tester from ebay I'm a bit confused about the servo tester input. Shouldn't it be just supply power? Then what is ...
4
votes
1answer
546 views

How to use an ESC

I'm new to RC related modules. Today I got my Hobbywing's Skywalker 20A brushless esc. Manual is here. I also have a brushless outrunner motor (HL3512) I ...
5
votes
3answers
5k views

How are current and voltage related to torque and speed of a brushless motor?

I know that electric vehicles have different performances depending on battery and motor, but it's not clear how electrical and mechanical units are related. Can anybody please help? Will a 100V ...
2
votes
3answers
244 views

What is this type of motor called?

Firstly some background: I would like to make a magnetic stirrer, like the ones they use in chemistry labs: A small bar magnet sits inside the glass jar, while another bar magnet, attached to a ...
4
votes
2answers
1k views

Controlling small brushless dc motors?

I'm designing an ESC with a small microcontroller running at 3.3V. The BLDC motors I have chosen are extremely small, and run best at 3.7V. I have the power supply for both of these (3.7V is VBATT, ...
0
votes
1answer
348 views

How to choose an Electronic Speed controller?

I'm having a go at making my self a quad-copter and was wondering how one would go about choosing an ESC?. I've chosen this motor and this ESC, Is the ESC suitable for that motor?
5
votes
3answers
689 views

Brushless motor specs to maximize stall torque

I'm interested in a brushless motor having a high stall torque (not much in RPM). What specifications of a BL motor would give a fair indication of its stall torque, provided that voltage is fixed ...
2
votes
3answers
655 views

Why do we need brushed motors?

Looks like brushless motors are more convenient - no brushes means no maintenance required. For example, power tools manufacturers often cite that graphite brushes need to be replaced every 50 hours ...
4
votes
1answer
321 views

Stopping a brushless DC motor in a specific position

I have a BLDC motor on an autopiloted model airplane, running with an ordinary PWM-controlled ESC. I have a feature I'd like to add which the ESC I have doesn't support, so I either want to find one ...
1
vote
1answer
264 views

predicting brushless motor rotation direction?

When connecting a brushless motor to an ESC, we are taught to apply power and switch two of the wires if the blade is spinning in the wrong direction. Is it possible to predict the blade rotation by ...
3
votes
2answers
7k views

Controlling a Brushless ESC with Arduino

I read this is possible here: http://chiphacker.com/questions/110/how-to-drive-drive-brushless-motor-with-arduino I'm just getting started with Arduino and electronics in general, can anyone ...
3
votes
4answers
2k 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 ...
1
vote
1answer
1k views

Controlling/Reading Hard Drive Brushless Motor w/ uC

I am working on creating a Hard Drive DJ similar to the other posting on this website, except that I want to drive the motor when the user isn't scratching on it. Multiple sources recommended using an ...
13
votes
6answers
20k 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?
3
votes
2answers
3k views

How do you read newer HDD motors (DC/Brushless) into arduino? (like stepper motors)

We had a version of the HDDJ working with an arduino reading an old stepper motor (with 4 wires), then sending serial data to processing, using a midi library, and midiox + midiyoke. Having trouble ...