sensor mat?

[Mike Andrews]

Pressure mats are used in alarm systems

These just close the circuit when someone steps on them:
http://www.mcmelectronics.com/product/82-18950?scode=GS401&utm_medium=cse&utm_source=google&utm_campaign=google&scid=scplp82-18950&sc_intid=82-18950&gclid=Cj0KCQjwwLHLBRDEARIsAN1A1Q4zt_WMNJLYE9ERlep8a0LDm5gGrDGhF5OtqDMnjtSQ72Q-htiEzxEaApi5EALw_wcB

https://www.google.com/search?q=alarm+pressure+mat&oq=alarm+pressure+mat&aqs=chrome..69i57j0l5.7757j0j7&sourceid=chrome&ie=UTF-8

Here's sensor for such as a Raspberry Pi that is variable resistor:

https://www.adafruit.com/product/1075?gclid=Cj0KCQjwwLHLBRDEARIsAN1A1Q4WxD9SOiSqMvZvt-ALLDvE7-yUt1RB8myctWZr8zpZU_r0KgHTfeIaAt8dEALw_wcB

--Mike

On Mon, Jul 17, 2017 at 5:05 PM, aethos <aethos at protonmail.com> wrote:

> Dee Dee, like to DIY cheaply? Two pieces of lightweight 1/4" plywood cut
> to size with bits of soft polyurethane foam separating them at corners and
> a microswitch located between the sheets might serve your purpose. Weight
> on the top sheet would compress the foam and trigger the microswitch. The
> microswitch could be wired to an X-10 Powerflash so as to alert Xtension.
> Adjust the height of the microswitch or the size/placement of foam pieces
> to get the needed sensitivity. Hot-melt glue could be used to join pieces
> together.
> Warren
>
>
>
> -------- Original Message --------
> Subject: sensor mat?
> Local Time: July 17, 2017 5:21 PM
> UTC Time: July 17, 2017 8:21 PM
> From: deesquared at mac.com
> To: XTension Discussion List <xtensionlist at machomeautomation.com>
>
> Dear XTensioneers,
>
> So I have an application where we need to somehow be able to place a very
> small sensor to detect when an item, say less than 1 lb. is placed on it.
> Then I need the sensor to tell XTension about it so that XTension can do
> stuff. The mat should’t be larger than maybe the size of a mousepad.
>
> Any thoughts or advice?
> Thank you,
> Dee Dee
>
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