[stevo]

Hi,

I'm working on a project and need help. I have a small room that I need
to setup a couple of devices. This is for an art show im doing, and its
suppose to mimic an interrogation room.

So, as you walk into the room (normally lite room)
- a pressure sensor will be setup under a stool
- when you sit on the stool, it trips a relay
- switches off normal lights and turns on spot light over stool
- i then have pre-recorded questions on a cd which i would like to
start play whent the spot light is turned on
- when the person stands up i need the cd player to stop, but if they
sit down again the cd needs to start again (from the start)

Im really confused how to set this up electronically

I have thought of using a relay that when closed from the pressure
sensor, it will close the loop for the speakers (which i thought of
letting the cd run on a loop) but I need the cd start at the start
everytime someone sits on the stool.

thanks

s.

 

[mike]

Hi,

I'm working on a project and need help. I have a small room that I need
to setup a couple of devices. This is for an art show im doing, and its
suppose to mimic an interrogation room.

So, as you walk into the room (normally lite room)
- a pressure sensor will be setup under a stool
- when you sit on the stool, it trips a relay
- switches off normal lights and turns on spot light over stool
- i then have pre-recorded questions on a cd which i would like to
start play whent the spot light is turned on
- when the person stands up i need the cd player to stop, but if they
sit down again the cd needs to start again (from the start)

Im really confused how to set this up electronically

I have thought of using a relay that when closed from the pressure
sensor, it will close the loop for the speakers (which i thought of
letting the cd run on a loop) but I need the cd start at the start
everytime someone sits on the stool.

thanks

s.

Use a laptop to play the CD, sense the switch, switch the lights.
This is gonna be far easier than trying to kludge a CD player to start
on command. Also allows you do do some other stuff, like set a
threshold weight to estimate male/female and change the questions
accordingly. If if they get up too soon, COMMAND them to SIT DOWN!!!
mike

--
Return address is VALID but some sites block emails
with links. Delete this sig when replying.
..
Wanted, PCMCIA SCSI Card for HP m820 CDRW.
FS 500MHz Tek DSOscilloscope TDS540 Make Offer
Wanted, 12.1" LCD for Gateway Solo 5300. Samsung LT121SU-121
Wanted 13" LCD for Mitac 6133 Samsung HT13X13-201
Bunch of stuff For Sale and Wanted at the link below.
MAKE THE OBVIOUS CHANGES TO THE LINK
ht<removethis>tp://www.geocities.com/SiliconValley/Monitor/4710/

 

[stevo]

Thanks mike, which program should I be using and how can i get the
laptop to sense the sensors (should i be using the par. port)

s.

 

[Colin Dawson]

You're getting into some serious stuff now. I'd suggest taking a look at a
the Velleman K8000 board. This could be used to both Sense the person
sitting down using a pressure switch. Depending on how you set things up, I
think it can be made to detect a heavy/light person. As for guessing their
sex, I won't try that as it'll be a little too dodgy - imaging a man in the
room getting mistaken for a woman - hmm, could be funny.

There's also a new board, that uses USB. As for getting the computer to do
what you want, I'm not sure what your technical level is on that, but it's
possible to do what you're after.

Regards

Colin Dawson
www.cjdawson.com

 

[Luhan Monat]

Hi,

I'm working on a project and need help. I have a small room that I need
to setup a couple of devices. This is for an art show im doing, and its
suppose to mimic an interrogation room.

So, as you walk into the room (normally lite room)
- a pressure sensor will be setup under a stool
- when you sit on the stool, it trips a relay
- switches off normal lights and turns on spot light over stool
- i then have pre-recorded questions on a cd which i would like to
start play whent the spot light is turned on
- when the person stands up i need the cd player to stop, but if they
sit down again the cd needs to start again (from the start)

Im really confused how to set this up electronically

I have thought of using a relay that when closed from the pressure
sensor, it will close the loop for the speakers (which i thought of
letting the cd run on a loop) but I need the cd start at the start
everytime someone sits on the stool.

thanks

s.

Your not a cop in Naples Florida, are you?

 

[stevo]

no, artist from Canada

 

[John Smith]

no, artist from Canada

One man's art is another man's junk.

 

[Mark Jones]

One man's art is another man's junk.

Especially at sci.electronics.design!

 

[[email protected]]

One man's art is another man's junk.

Yep, and that crap gets paid for out of my pocket. Now you want people
to help you set up an automated torture room... we dont know who you
are or what war you might be fighting. Get stuffed.


NT