Added: 2 years ago
From: skierplaterandy
Views: 7,167
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  • Great project, just have one question :) what is the rpm of the motor? Thanks in advance, Marcin.

  • which motor are you using? and how did u made its rotation so stable?

    i made a pov display but the pcb has some bad vibrations and since i am using a simple dc motor, i am unable to calculate exact speed of motor forcing me to go for hit and trial method.

  • @MrHellsguardian00

    I would not call the rotation of mine by any means stable. The thing would jump off a table if you let it.

    I think the motor I'm using came out of an old printer. It had higher torque and slower turning than the other dc motors I had, that's why I picked it.

    Its all about weight balence, that's why mine was so unstable. I just guessed where it was and used epoxy to put it there, and that failed.

    I tried adding weight but it didn't help.

  • Would induction power work?

  • @campbellprowl

    It could, but it's not practical. You'd need big coils and capacitors to make it stable enough to power the arduino board. It could work, but the board might reset a bit.

  • hii andy saw the video its great to make it.. amazing. i love it. i also have arduino with me can you plz tell me pin connections of led with arduino and the code.plz

  • @rohitsay89

    unfortunatley i do not have the origional source code anymore. What i can tell you is that it wasn't at all complicated.

    ok so what i did was used a light sensor and hooked it up so i have it on an analog pin to 5v, and then from that pin to ground. this will output a voltage that you can test for.

    basically i hooked up each led through a resistor to its own pin, and turned them on and off with delays to draw letters. takes some time to get the timings right.

  • how do you power the motor with the 9v battery without entangling the wires, while it rotates?

  • @RavenRof good question.

    The motor is actually being powered by an external wall adapter at 12 volts.

    I would exclude the battery if i could, but there is no easy and reliable way to do it, so i used a second power supply (9v)

  • nice project.i 've also started a project like yours but it implies more leds and a bigger diameter.what song is that from the background, because is very cool.

  • its in the descrip :)

    hope i have yu some ideas.

    with this the only real problem i encountered was keepin the 9v from flying off, it might be easier to use watch batteries or something.

  • Awesome, how noisy is it though ?

  • it isnt very noisy, the motor doesnt make noise as it turns, but the base connecting to the motor isnt very secure and the entire top unit is offset slightly so it shakes and rattles a bit. i cant set it down while its running or it will go crazy.

    i lost all my code by accedent when i re-formatted my pc so i wont be working on it for a bit.

  • cool ;)

    can you add me to msn?

    delxsus@ho...com

  • why?

  • i want to make one of these and i need some help...

    please ^^

  • im re-downloading msn so yea, u shud get xfire cuz it is better and im like never on msn.

    goto xfire(.)com and make an account. add sniper011 on it. thats me.

  • Awesome ;)

  • thanks :D

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