Angus

There are a few approaches:
Here are just a couple of leads:

1. An off the shelf solution with analog output:
http://www.acroname.com/robotics/parts/R21-IR05.html:
Sharp, makes the sensor Acroname is just one outfit that sells it.

2. Hacking a 'standard' ir receiver module to measure distance:
http://www.mil.ufl.edu/imdl/handouts/sharphack.pdf


Hope that helps.

carl

At 06:11 PM 3/28/2002, you wrote:
>I need tt measure distance somehow - i.e. whether there is an object in
>front of a sensor or not... is it possible to use a PIC to measure a very
>rough calculation of reflection distance, - you know the same way one of
>those tapeless tape measures work?
>
>anyone any experience/ideas?
>
>angus.
>
>--
>http://www.piclist.com hint: PICList Posts must start with ONE topic:
>[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads

--
http://www.piclist.com hint: PICList Posts must start with ONE topic:
[PIC]:,[SX]:,[AVR]: ->uP ONLY! [EE]:,[OT]: ->Other [BUY]:,[AD]: ->Ads