20-08-2006 18:06

Michelle Celio

Re: pic: Secret part of my newest vexbot

Isn't it a part of a microwave. We had things that looked very similar in room last year (like 10?) and they told me it was part of a microwave.

20-08-2006 18:21

Jeff Rodriguez

Re: pic: Secret part of my newest vexbot

Yeah, that's a magnetron.
His new robot won't just retrieve your food, it will heat it up on the way.

20-08-2006 18:24

thegathering

Re: pic: Secret part of my newest vexbot

Looks like a microwave magnetron.

*edit* oops someone he beat me to it *edit*

20-08-2006 18:26

Tristan Lall

Re: pic: Secret part of my newest vexbot

She's absolutely right. It's a magnetron.

So, what do you need that for?

20-08-2006 18:55

thegathering

Re: pic: Secret part of my newest vexbot

Cooking enemy robots... perhaps soldering on the fly?

20-08-2006 19:40

Lil' Lavery

Re: pic: Secret part of my newest vexbot

Obviously heating your donut while it delivers it to you.

20-08-2006 19:54

anna~marie

Re: pic: Secret part of my newest vexbot

oh oh I know!!!! *feels special*

20-08-2006 20:00

Richard Wallace

Re: pic: Secret part of my newest vexbot

Maybe for killing termites?

20-08-2006 20:49

Bill_Hancoc

Re: pic: Secret part of my newest vexbot

A microwave works by exciting the h20 particles in the food creating heat.... so soldering is out.....thats why you cant heat a potato chip in the mircowave

20-08-2006 21:07

Andrew Blair

Re: pic: Secret part of my newest vexbot

Microwaves also excite silicon carbide, thats how microwave crucibles work. A portable metal casting robot?

20-08-2006 21:12

Cody Carey

Re: pic: Secret part of my newest vexbot

A death-ray?

20-08-2006 21:36

Dylan

Re: pic: Secret part of my newest vexbot

Microwaves are built so that the magnetrons will not turn on with the door open, because the radiation is harmful to humans.

That being said, I'm going with Cody's death ray guess.

20-08-2006 21:54

thegathering

Re: pic: Secret part of my newest vexbot

Not enough H2O in the air

There still should be enough water in the battery soln. to cook the robots...

20-08-2006 22:15

artdutra04

Re: pic: Secret part of my newest vexbot

Actually, we've been using microwaves for line-of-sight radio relay communications for quite some time now. Any time you see a radio tower that looks like the picture below, it's actually a microwave radio relay tower. Usually they are painted red and white.

(Actually, it was a technician who was servicing a magnetron that noticed that microwaves "cook" things, as his peanut candy bar became the first microwaved food. )



So here's the question: is Tytus developing the world's first Vex space satellite?

21-08-2006 02:58

Alekat

Re: pic: Secret part of my newest vexbot

First, I gotta try that. Second, if microwaves excite H20 then why the reaction with metal?

It seems like any bot safely using a magnetron would be rather large for a vex bot. Unless it's not made to move, but make you're existing microwave more awesome.

21-08-2006 08:41

Tytus Gerrish

Re: pic: Secret part of my newest vexbot

metals reflect microwave and raido waves a microwave oven produces a frequincy of 2.45GHZ the wavelegnth is between 12cm and 13cm. thats why your microwave oven at home has a perforated peice of metal in its window. becasue microwaves can't pass through it.

21-08-2006 15:44

Qbranch

Re: pic: Secret part of my newest vexbot

You realize that this will omnidirectionally broadcast high power microwaves, right?

i hope you wear your lead apron around this thing. along with anyone else in a 50' radius.

by the way, how on earth are you going to power this? they usually take 700~1500w input. (Thats 75~125 amps at 12VDC )

just my 2 cents, but, i think this might be a baaaad idea....

-Q

21-08-2006 16:59

Astronouth7303

Re: pic: Secret part of my newest vexbot

This will be interesting to watch - over the internet.

Maybe he'll just use it as ballast.

Maybe it's supposed to be puzzling, like my laser. (Maybe I'll use that on a robot...)

21-08-2006 18:07

Tim Arnold

Re: pic: Secret part of my newest vexbot

Cool link, but I opened the site in a background tab and it freaked me out when the SitePal guy gave a booming "HELLO" with my speakers turned up all the way :/.

22-08-2006 01:52

Barry Bonzack

Re: pic: Secret part of my newest vexbot

Newest Vex bot? Oh... My. No Tytus, I do not believe this abides by the "Mostly Vex" rule you were asking about in the 1902 Vex Competition thread. However, I do believe your robot would damage the field elements pretty well.

22-08-2006 08:26

Jeremiah Johnson

Re: pic: Secret part of my newest vexbot

We're talking about Tytus here. He has a history of not good ideas and bad outcomes.

Burn
A Tad Over The Speed Limit
Waterjet 1
Waterjet 2
Waterjet 3

And there you go. Have I proven my point? There was one more where he got branded on his arm but I didn't have time to get it.

22-08-2006 09:15

Tytus Gerrish

Re: pic: Secret part of my newest vexbot

no this has nothing to do with 1902's vex competition. i know better than to beam microwaves at a bunch of kids and sterilize the future of first.

22-08-2006 10:07

Greg Needel

Re: pic: Secret part of my newest vexbot

burned with a wrench

and burned with a blowtorch

22-08-2006 10:12

anna~marie

Re: pic: Secret part of my newest vexbot

ouch what is this, pick on tytus day?

22-08-2006 11:40

Jeremiah Johnson

Re: pic: Secret part of my newest vexbot

Well actually... it could be. But I don't think so. I just had this information bottled up in this empty brain of mine and was looking for a place to use it. I told one of my coworkers about his experience with the waterjet when we were looking through a magazine and saw an ad for a waterjet.

I have a lot of useless information that is just waiting to be used.

24-08-2006 11:03

Conor Ryan

Re: pic: Secret part of my newest vexbot

I Saw this on Engadget today, looks remarkibly similar, and really really, sounds like something Tytus would put on a Vex bot, Researchers create Microwave Drill/Deathray

24-08-2006 12:34

Tytus Gerrish

Re: pic: Secret part of my newest vexbot

mabye later, not this time. here's a hint. It has to do with mobility

24-08-2006 13:34

lukevanoort

Re: pic: Secret part of my newest vexbot

Steam engine? Seems a little inefficient, if that's what you're doing, but boy it would be cool.

24-08-2006 13:42

Tytus Gerrish

Re: pic: Secret part of my newest vexbot

not even close. the microwaves are not used for heating.

24-08-2006 15:56

Chuck Glick

Re: pic: Secret part of my newest vexbot

possibly radar to make a fully autonomus robot?

24-08-2006 23:17

Eldarion

Re: pic: Secret part of my newest vexbot

So you invented an antigravity drive based on microwaves?

25-08-2006 11:32

Daniel_LaFleur

Re: pic: Secret part of my newest vexbot

Not Likely unless it's used for an outside vehicle. Reason: The reciever of a RADAR must be turned off during transmit (except a noise radar). If it is not then the receiver will be burned out by the transmitted pulse. The 'on-time' for the reciever is long enough that the pulse would already be past it in the confines of an indoor arena.

I, too, am interested in what he is using it for. The magnetron cavity is tuned to a specific frequency (in the case of a microwave ovens magnetron..its the natural frequency of water). So for him to not use it for heating is....interesting, And probably means that that magnetron was never intended for a microwave oven.

25-08-2006 11:49

Tytus Gerrish

Re: pic: Secret part of my newest vexbot

it is tuned to 2.45GHZ just like a microwave oven. however supplying different voltages to some magnetrons can produce diffrent frequinces

25-08-2006 12:42

Qbranch

Re: pic: Secret part of my newest vexbot

OW!

i think he needs to go back to chip sweeper status in the machine shop


i have done stupid stuff too, gotten cut on and endmill, ripped my thumbnail with a tuning-fork-looking skate wheel folder, ....

but watch yourself around hot stuff

-Q

25-08-2006 13:40

Tytus Gerrish

Re: pic: Secret part of my newest vexbot

does anyone know where i could get some small diamater Foil bearings?

25-08-2006 13:55

Jeremiah Johnson

Re: pic: Secret part of my newest vexbot

Are you making a Vex airplane?

30-08-2006 21:56

Al Skierkiewicz

Re: pic: Secret part of my newest vexbot

Before we get too crazy here, the microwave used for communication is a relatively low power device connected to some high gain, directional antennas. Most are not harmful unless you choose to climb the tower and stand in front of it. Radar installations create more power than these in the picture. For those of you who are RF inclined, the brass cylinder sticking out the top of the magnetron is actually a 1/4 wave antenna used to couple energy into the cavity of the microwave.

Please Tytus, tell me you were careful when you extracted the device from an oven. There is some really high voltage capacitors that can hold a charge for quite a while that are connected to the magnetron.