> 2. I was wondering if the light could be piped uisng some sort of
> fiber-optic cable method - this presumably would mean shielding the light
> LED in some kind of sheath which would considerably narrow it. I've no idea
> how hot the LED can get during operation, so presumably the sheath would
> have to be able to withstand a moderate temperature rise without melting or
> smoking.
First, don't worry about heat - such leds are really cool (thermically wise)
devices! This one dissipates only about 20 mW...
Your fiber optic cable idea is interesting... and it works well!
"Philippe Hurbain" <philohome@free.fr> wrote in message news:JAF8tF.16H@lugnet.com... (...) That's good to hear. (...) I'll have to download and check out your program. It looks great! I'll also have to see if I can get the sensor to detect 1x1 (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
(...) I've also used this the other way around, using a fiber optic cable to route light to the phototransistor itself. Do this with more than one light sensor, and you can have much better spatial resolution (the ends of two fiber optic cables can (...) (18 years ago, 18-Dec-06, to lugnet.robotics.nxt)
I'm looking for ways to build this sensor into a studless beam project of mine, and I was wondering, given it's large size and the comparative brightness of the LED used to light it, how can I use it to detect if an object is blocking a path? (...) (18 years ago, 16-Dec-06, to lugnet.robotics.nxt)
