Subject:
|
Re: One tip, and a few questions.
|
Newsgroups:
|
lugnet.robotics
|
Date:
|
Sat, 21 Nov 1998 06:01:16 GMT
|
Original-From:
|
Peter Hesketh <pbh@phesk.#AntiSpam#demon.co.uk>
|
Viewed:
|
1117 times
|
| |
|
|
In article <01BE14B1.B5C66E80.eric.hodges@platinum.com>, Eric Hodges
<eric.hodges@platinum.com> writes
> One uses a single
> light sensor. The bot swivels until the sensor value starts to decrease,
> then swivels back and goes forward until the light decreases by some fixed
> percentage. Then it starts swiveling again, but in the opposite direction.
> This is good for finding the boundary between light and darkness.
In the fifties I built a heat-seeking swivelling "eye" using that method
with valve (tube) technology. The IR detector was an old fashioned
glass envelope design which looked like a small light bulb. I painted
an eye on the front and mounted it on a motorised swivel base. It would
scan the room looking for warm objects and stare at them as they moved
around.
Unfortunately when I was working in the room it would become captivated
by the soldering iron and gaze at it lovingly, ignoring everyone else.
I also had to hide its own amplifier to rule out narcissism.
--
Regards - Peter Hesketh, Mynyddbach, Mon.
Forty reasons why a dog is better than a woman: number 7
"The later you get home, the _happier_ a dog is to see you."
|
|
Message is in Reply To:
 | | RE: One tip, and a few questions.
|
| The scale is from 0-100, where 0 is dark and 100 is light. Why does everyone want to use a laser pointer? This seems like the hard way to do things. I use a big Mag-Lite flash light. The beam is fairly directional, but large enough that the bot can (...) (26 years ago, 21-Nov-98, to lugnet.robotics)
|
2 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
Active threads in Robotics
|
|
|
|
|
|
