Hello,

How about a floor vibration meter?
This can measure the stability of a building.

Bertus

This would be a good use for a laser.

 

Remote Viewing device, for criminal detection/mind reading.

It shouldn't be too hard, some say the govt already has one.

 

Hey why you dont try to interface cellphone to controller..
i've made similar(debuging now) in this sem.

 

This would be a good use for a laser.

Or a shark with a laser, think about the advantages of that.

 

Or a shark with a laser, think about the advantages of that.

<snip> it...
Got to vacum th keeeeebaad

 

Or a shark with a laser, think about the advantages of that.

Sounds about as useful as my cat with a laser. Oh wait, laser cats has been done already!

I wonder if the OP ever got what he wanted. I'm proud of the monster I created with a flip answer to his post. Creativity lurks here in the shadows just waiting to pounce.

 

hey amit what have u made for ur project??

 

hey amit what have u made for ur project??

I agree, though your use of text speak pains me to read.

One place to begin is to ask yourself what sort of things outside of electronics do you find interesting? Secondly, what area of electronics do you find most interesting?

If you answer both of those questions in English (!), I think some sincere suggestions will follow.

John

 

Hello,

I am serious about the floor vibration sensor.
I made one for measuring the floor vibration once.
I was used to see if the floor was stable enough to have a NMR magnet in the room.

Here is a link to a PDF on commercial vibration sensors:
http://www.skf.com/files/268580.pdf

I used a permanent magnet and a hallsensor on a spring.

Bertus

 

@bertus

I was not referring to your suggestion, my friend. I happen to have had in interest in measuring floor vibrations too -- yes, for an NMR, a mass spec., and to study the effects of low-frequency sound on productivity. The latter is an interesting, significant, and often ignored aspect of the work environment.

However, the post following yours(#19) put it in a different light.

John

Here are some references on low-frequency sounds. Unfortunately, I threw out a very nice study done in the UK when I needed shelf space last Summer.

http://www.dogpile.com/clickserver/...23=0&40=F3znQnwBl2/A0AoAu5M2Qw==&_IceUrl=true

http://www.multi-science.co.uk/effects_low-frequency.htm

http://www.ohao.org/PDF/LFS.ppt

http://www.noiseandhealth.org/artic...lume=6;issue=23;spage=87;epage=91;aulast=Waye

 

However, the post following yours(#19) put it in a different light.

Ok John..I get it ...U seem rather unhappy towards my posts.

Is something wrong?
U can tell me. It's not nice to hold anything.

Besides, I don't think my post is the only one that put's it in a different light.


The thing is, I enjoy while I read and I tend to show it.
If it makes me laugh, I will laugh and I will say it out loud.
and I know u find me different.
I am different, and I am proud, it is what stands me out of the rest.

 

Sounds about as useful as my cat with a laser. Oh wait, laser cats has been done already!

.

Got yah covered.
http://www.youtube.com/watch?v=Fd0UMQFXoFc

 

What is the newest technology for B.E(electronics ) final year project.??

 

Well last week it was the laser. This week the maser. In the future the phasor.

 

Well last week it was the laser. This week the maser. In the future the phasor.

U guys never stop do u ?

I got an addition to a previous post

Single poled magnetic fish that use DSP for brains using perpetual motion for power and lasers for....having lasers!

Skip for having lasers.
Why not use lasers to fry other fishies. This will make fishing a breeze.
And u won't need to cook 'em too. U can eat it when they surface. Instant laser fried fish. Fresh out of water.

 

I am serious about the floor vibration sensor.
I made one for measuring the floor vibration once.

I don't know if the sensitivity is relevant, but every MacBook has a built-in seismograph these days. You can access the accelerometers with utilities such as SeisMac, to see tiny vibrations along the 3 axes. There are efforts underway to use the seismographic data from thousands on networked Macs to provide useful geophysical measurements. Of course there is a lot of noise (non-seismic activity), but that can be overcome using lots of signals and clever software.

 

Hello,

I build this floor vibration meter about 20 years ago, but it can still be a challenge today if you do not want to use premade sensors.
This way you can use the physics how the sensor works.

Bertus

 

I used a permanent magnet and a hallsensor on a spring.

A hall sensor could be very useful in keeping people from entering the same room all the time. You could strategically place laser-cats on springs to determine when you were approaching a hallway, or if you were actually in one and the proper direction of travel.

 

Lasers are good. How about building one with a black beam?