Light sensor

[Bob Steele]

We are looking for a light sensor similar to the one that used to be in the kit..
( A long time ago.....) We want something we can use to just sense the white line.... We also need it to be more robust than the VEX sensors...

We would like to use it as a fail safe during autonomous...

Ideally it would throw its own light... reflect back.... measure.
We don't need code... we just need hardware...

I remember using these sensor in Stack Attack... just can't remember who makes them... they came in the kit for a few years...I think they were yellow...
For the life of me I can't remember the name

Help?

thanks!!!