Cheapest object sensor on the market!

Hi all...I need the cheapest possible object sensor on the market to embed
it onto a circuit board, any range between 100mm to 0mm, even a touch or
pressure sensor which ever is cheaper. CapSense from Cypress is a perfect
solution for my application because of its size, would not have been for
the price ($1.40). Is any one knows of a cheaper solution and that it
would not need a micro controller. I do not need a long life sensor as it
is a disposable kind of product.

On Sun, 06 Apr 2008 08:38:55 -0500, "raedarrar" <info@0-800.tv> wrote:

>Hi all...I need the cheapest possible object sensor on the market to embed
>it onto a circuit board, any range between 100mm to 0mm, even a touch or
>pressure sensor which ever is cheaper. CapSense from Cypress is a perfect
>solution for my application because of its size, would not have been for
>the price ($1.40). Is any one knows of a cheaper solution and that it
>would not need a micro controller. I do not need a long life sensor as it
>is a disposable kind of product.

The design constraints would be satisfied by a bit of wire that's
pushed onto a solder pad, so perhaps there are unstated
considerations?

-- 
Rich Webb     Norfolk, VA

>Hi all...I need the cheapest possible object sensor on the market to
embed
>it onto a circuit board, any range between 100mm to 0mm, even a touch or
>pressure sensor which ever is cheaper. CapSense from Cypress is a
perfect
>solution for my application because of its size, would not have been for
>the price ($1.40). Is any one knows of a cheaper solution and that it
>would not need a micro controller. I do not need a long life sensor as
it
>is a disposable kind of product.
>
>
>I did not get what you mean! all I need is a kind of sensor that i can
even integrate it on or print it on my circuit board, My project is to not
to pass a total cost of $1 (Sensor, cheap Liquid Cristal display, coin
Battery with a hight not more than 3mm. I need a product that last only 30
hours of use. Low life sensor, whichever would be the cheapest solution
(touch, reflective, capacitive or photosensor). 

Where should i found one or may be how to do one on the circuit board.

> hours of use. Low life sensor, whichever would be the cheapest solution

If you are looking for a low-life sensor, you will find that many
humans have one integrated. Perhaps you could find a dealer in surplus
humans and salvage them for parts?

You need to clarify just what the hell you mean by an "object sensor"
if you expect any useful help.

On Apr 6, 6:38 am, "raedarrar" <i...@0-800.tv> wrote:
> Hi all...I need the cheapest possible object sensor on the market to embed
> it onto a circuit board, any range between 100mm to 0mm, even a touch or
> pressure sensor which ever is cheaper. CapSense from Cypress is a perfect
> solution for my application because of its size, would not have been for
> the price ($1.40). Is any one knows of a cheaper solution and that it
> would not need a micro controller. I do not need a long life sensor as it
> is a disposable kind of product.

If you mean buttons, then the cheapest solution is rubber w/
conductive base.  Rubber buttons are approx. 25 cents.  The contact
points are on the PCB, using uC debouncings.  You also mention LCD,
which would be difficult to do without uC or a dedicated controller.

raedarrar wrote:
>> Hi all...I need the cheapest possible object sensor on the market to
> embed
>> it onto a circuit board, any range between 100mm to 0mm, even a touch or
>> pressure sensor which ever is cheaper. CapSense from Cypress is a
> perfect
>> solution for my application because of its size, would not have been for
>> the price ($1.40). Is any one knows of a cheaper solution and that it
>> would not need a micro controller. I do not need a long life sensor as
> it
>> is a disposable kind of product.
>>
>>
>> I did not get what you mean! all I need is a kind of sensor that i can
> even integrate it on or print it on my circuit board, My project is to not
> to pass a total cost of $1 (Sensor, cheap Liquid Cristal display, coin
> Battery with a hight not more than 3mm. I need a product that last only 30
> hours of use. Low life sensor, whichever would be the cheapest solution
> (touch, reflective, capacitive or photosensor). 
> 
> Where should i found one or may be how to do one on the circuit board.

What are you trying to measure ?

How about the crude touch-sensors from early tv remote controls (think 
70th)?

These where just two electrodes (part of the PCB) and a very simple 
analog transistor-circuit that measures the presence of body-resistance.

Won't work for users with gloves on, but it will be cheap for sure.

Nils

Any thing moves or waves in front of it, in my case to detect hands. 

If you mean buttons? 

No, i will use a smart card type size, thickness can go as hight as 3mm
max.

Any idea on a solution?

What are you trying to measure?

I am not trying to measure a distance, but want to detect a hand or a
finger when it comes within 50mm to 100mm.