400 Pound Robot Spin Test

[Robots4Sale]

what is the high pitched noise?

i need you to help build these for my robotics program

[javedkhan0258]

how much?

[harvinsi]

seems more like an R/C vehicle than a robot. doesn't a robot have to be programmed?

[MrTpengineer]

@harvinsi Almost anything can be a robot, if it requires user input from wireless locations and runs off batteries then there ya go :)

[0vland]

that thing must kill batteries

[sparkey989]

are you gonna use it for robot combat?

[sparkey989]

cool very good how much does it weigh

[JakeLeonard123]

it says in the title

[sparkey989]

I meant exactley, unless it IS 400 exact.

[elundquist]

Very nice work!

[eatcheese5486]

very cool but you should try and find a way to mask that noise like put Styrofoam or something over the microchip to mask the noise abit.

[Aev308]

were did you get the treds/track

[ishizuki23]

A snowmobile plus a ton of work. I don't recommend it.

You can read all about it on my website, linked in the video description (build sections 34-43).

[dingo27mobile]

@ishizuki23 dude you should get another image hosting really soon, speed of current one sucks really bad.

[virtualboy1995]

Nice bot, I think the noises is caused by the micro transistors (mosfets) switching on and off.

Have you solved the track issue yet?

I think you need another sprocket like the drive style in he front with a threaded rob turnbuckle to adjusted for tension.

Very very nice.

Do you use Autodesk Inventor?

[ImageSuck]

woah cool can ya sit on it?

[javierenchina]

pretty maneuverable

[lauriinus]

Very good video.

[aceydog2]

What is the high-pitched squealing sound?

[RichiepooProductions]

I thinks the sound is caused by Pulse width modulation motor control (if the robot is so equipped)

[RichiepooProductions]

I thinks the sound is caused by Pulse width modulation motor control (if the robot is so equipped)

[ishizuki23]

I think you're right about the PWM. It didn't make the noise until I upgraded the controllers. The new ones are awesome except for the annoying noise, and I can't figure out how to get rid of it.

[bassplayer142]

@ishizuki23 Change the pwm frequency. Changing the frequency does not affect the power delivered, while the duty cycle changes the power delivered. The humming is most likely coming from a frequency that is in the range or human hearing. Change that.

[Greekeng]

Interesting robot, May I ask where you located the tracks and drive wheels? I have a similar unit, that uses a custom drive wheel and track? Thank you