Thanks for the link.  I checked them out but they have a min range of 3=20
metres, which will cause triggering by people way outside the target range.
David...

On 21/02/2012 9:42 AM, Nily wrote:
> David
>
> http://www.suntekstore.com/goods-14001970-Wireless+Module+Doppler+Radar+M=
icr
> owave+Motion+Sensor.html
>
> This link has some data and schematics. Look at " document download ".
>
> Cheers
>
> Rodolfo
>
> -----Mensaje original-----
> De: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]En nombre de
> Nily
> Enviado el: Monday, February 20, 2012 3:05 PM
> Para: Microcontroller discussion list - Public.
> Asunto: RE: [EE] Proximity Sensors
>
>
> Look at this item 120782820889 sold by eBay.
>
> Says detection 20 meters...
>
> -----Mensaje original-----
> De: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu]En nombre de
> David Duffy (AVD)
> Enviado el: Monday, February 20, 2012 2:42 PM
> Para: PicList
> Asunto: [EE] Proximity Sensors
>
>
> Has anyone here done much work with proximity sensors?  I am looking to
> trigger an event when someone stands in front of (or walks past) a
> specific area in a retail environment.  The sensing must be done from
> one side only (no beam break methods).
>
> The sensing range would need to be approx 200mm - 1000mm (8" - 40").
> The horizontal detection width would need to be approx 500mm (20") at
> end of the range I guess.  There would be multiple sensors, spaced at
> approx 600mm - 900mm (24" - 36") intervals.
>

--=20
___________________________________________
David Duffy        Audio Visual Devices P/L
Unit 8, 10 Hook St, Capalaba 4157 Australia
Ph: +61 7 38235717      Fax: +61 7 38234717
Our Web Site: www.audiovisualdevices.com.au
___________________________________________

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.