Using LEDs as light sensors

[skimask]

have a look at this post
http://www.picbasic.co.uk/forum/showthread.php?t=3624

skimask, I have built a version of a solar tracker about 2 or 3 years ago using Green Led's as light sensors with great success. Here is a link to a site I found about 2 years ago with some circuits for an interface. I have since gone over to using the TSL-230 light to frequency sensors as they have a wider light to dark ratio. I hope this helps.....
http://www.redrok.com/electron.htm#chaceshadow

Dave Purola
N8NTA

Shucks...and I thought I might be 'first' (in a relative way of thinking) at something.
Oh well....
I'm whipping up a small page on my site right now. The code works great, and it's neat to watch at any rate.
Thanks for the link guys. I've got a bit more info to work with now.

Video/writeup posted to my web page.