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thats an switch with an motor, but no stepper motor. Epic fail

This is just a classic DC motor. I got a stepper motor connected to my NXT...check my channel, the video is called Mindstorms NXT + stepper motor, a coil making robot!

Mato0092 1 year ago

put on lego car it not that cool by it self thanks 4 sharing

gaspowerrules 1 year ago

lol

MultiVideokiller 1 year ago

boring

34jappes 2 years ago

thats not a stepper motor

ausernamenonewants 2 years ago 20

wtf is this shit

sampthimo 2 years ago

wtf

reck361 2 years ago

I agree with tha guy below me ._.

takakura94 2 years ago

huh?

weetnietgeen 2 years ago 18

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Your professor is completely right, but it is a severe simplification.

The rotor of a stepper motor is a magnet that looks much like a cog with many smal teeth. Lets imagine this particular one has 100 teeth. Around the rotor is a number of coils or electromagents if you prefer that name.

Lets say this stepper has four such coils. This would also be a simplification as the number is somewhat higher, and some coils are connected in series and such, but lets not focus on that right now.

VanDeGraaff 2 years ago

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One of the four coils are always on, with current flowing through it. The electromagnetic forces pulls on the rotors teeth, and the tooth closest to the coil is aligned with the coil, rotating the shaft slightly.

Now the next coil is enegized, and the original one is turned off. This alignes another tooth with the second coil, rotating the shaft slightly more. This repeats with the third and fourth coils aswell.

VanDeGraaff 2 years ago

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The number of teeth and coils are calculated precicely so that when all coils have been energized, the cog has moved by one tooth. This cycle repeats over and over.

When this cycle has been repeated 100 times, the shaft has rotated óne revolution (this is because the rotor has 100 teeth of course).

In simple turns a stepper motor is a motor that makes one revolution for a fixed amount of cycles. In this case 100 cycles, in your case 1 cycle. So you have clearly understood the basics :D

VanDeGraaff 2 years ago

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And here is the main advantage of a stepper motor. I can calculate precicely how many cycles i need to turn the shaft so and so much.

I want the shaft to turn 3 full rotations and 145 degrees.

3 x 100 = 300. That is how many cycles i need to run to drive the shaft exactly 3 revolutions.

Now i need to know how many degrees i get per cycle:

360% / 100 = 3.6 deg.

Then i divide the amount of degrees with the degrees per cycle:

145 deg. / 3.6 = 40.3

VanDeGraaff 2 years ago

you dont know anything you dumb lock

skoolrox123 1 year ago

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By selecting the order in witch these coils are activated i can make the shaft turn backwards. By altering the time between switching coils i can make it go very slow or very fast. If no coils are activated, the shaft will spin freely, and if i keep one single coil activated the shaft locks in position.

VanDeGraaff 2 years ago

tahst not a stepper motor , you tell proffesor that and tell him to stop trying to impress people with made up techno lingo

cinijast 3 years ago

lol some professor! a stepper motor uses a motor driver pcb that has at least 2 IC's, 1 being a timer chip and the other the driver chip that switches on and off coils inside the motor e.g. 1, 1+2, 2, 2+3, 3, 3+4, 4, 4+1 all within a very short space of time depending on what speed you tell the driver to go. A stepper does not do 1 revolution for each pulse, if it did then it wouldn't be as accurate as they are. you cannot use a normal motor as a stepper motor, it's impossable

mac550 3 years ago

Yes, but that's what the professor of the class referred to it as. It's a stepper motor in the sense that it will reliably turn one full revolution per pulse.

DoScythes 4 years ago

Your professor sucks then. This LEGO creation looks more like a rocket or whatever, rather than a stepper motor. I think you get my point.

ClaudioArrau 3 years ago

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VanDeGraaff 2 years ago

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VanDeGraaff 2 years ago

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VanDeGraaff 2 years ago

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VanDeGraaff 2 years ago

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VanDeGraaff 2 years ago

@DoScythes If those are the exact words the teacher used to explain how a stepper motor works he is SO wrong, but if that is what you understand of the entire explanation you are an ass XD

A little pieces of advice, if you have internet at home to upload this video you should use it to get information about stepper motors, there's a LOT

isamu2040 8 months ago

Why do you called this "stepper motor" ?? Do you know what stepper motor is??

Jan16, CZ

Sixta16 4 years ago

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