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How to wire theese motors? Answered

Hello guys lately ive been saving motors and parts from broken vhs dvds printers n stuff.
i know how to use permanent magnet motors but sometimes they come with some different kind of motors that have 3 4 5 or even 6 pins coming out such as hdd motors ,vhs heads, dvd spinner motors, and motors from printers.... my knowledge in electronics is kind of mid-low im guessing
well the thing is that id really like to learn how to use wire them up so i can give em some use

Thanks for ur explanations btw excuse my bad english its just not my first language


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10 years ago

Good question!

Depending on the motor it can be vastly different. Lots of motors in electronics which require precise, predictable motion are either stepper motors, or multi-phase brushless motors.

The way to drive a boring old 'dc' brushed motor is just that -- the power comes in and the complex task of reversing the polarity as the rotor revolves is handled by the brushes and commutator. In a brushless motor, you have...no brushes, so all the switching has to be done by the driver circuitry -- no DC here :)

Further different - a brushless motor is 'like' a stepper in that it requires specific pulsed (or alernating) current applied to the coils, which are directly wired to the output pins.
Problem is: It's a complex process since each motor is different. Steppers TEND to have 4-8 wires, where brushless motors TEND to have 3 (plus wires to sense rotor location sometimes) (not written in stone, ymmv).

Brushless Motors - precise speed, not precise distance:
how it works: http://www.howstuffworks.com/brushless-motor.htm
diy circuit: http://hackaday.com/2010/11/26/arduino-electronic-speed-control-explained/
One thing this is missing is the Electronic Speed Controller (ESC) needs to sense the position of the rotor either through hard fixed sensors, or by listening to the third 'disconnected' wire during the pulse on the other 2 to determine the timing to flip to the next set of wires.

Stepper Motors: Precise location and speed, generally less overall speed compared to a brushed motor.
All about it http://en.wikipedia.org/wiki/Stepper_motor
https://www.instructables.com/pages/search/search.jsp?cx=partner-pub-1783560022203827%3Anpr2q7v5m6t&cof=FORID%3A11&ie=ISO-8859-1&q=stepper+motor ---drivers and circuits.