Wow!!! LASER Time-of-flight with resolution of millimeters???
Are they using a clock close to 300 GHz inside or some very clever trick?

Isaac


Em 01/09/2015 01:45, Bob Blick escreveu:
> Here's a distance sensor intended for cell phone face proximity. Uses
> time-of-flight of a laser:
>
> http://www.st.com/web/catalog/mmc/FM132/CL2136/SC1934/PF260441
>
> In the past I might have recommended one of the Sharp rangefinding
> modules, but the ST thing makes them seen crude:
>
> http://www.digikey.com/product-search/en?v=3D425&v=3D1149&FV=3Dfff4001e%2=
Cfff803b2&k=3Ddistance&mnonly=3D0&newproducts=3D0&ColumnSort=3D0&page=3D1&q=
uantity=3D0&ptm=3D0&fid=3D0&pageSize=3D25
>
> Bob
>
> On Mon, Aug 31, 2015, at 08:39 PM, Neil wrote:
>> Anyone know of a non-contact distance sensor that can measure up to say=
=20
>> 1 inch?  I built a machine for maker faire (in less than 2 weeks) that=20
>> lets people draw on a touch screen an that will get printed with=20
>> frosting on a cookie.  But if the cookie is not flat (rarely are they=20
>> really flat), there are issue with the frosting not sticking properly in=
=20
>> some corners or sharp curves.  I'm thinking if I can map the surface of=
=20
>> the cookie quickly before printing each one, I can have the Z-axis track=
=20
>> the cookie's "terrain".  This is a fun project so low-cost is important.
>>
>> Cheers,
>> -Neil.
>>

--=20
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