Subject:
|
Re[2]: expansion board
|
Newsgroups:
|
lugnet.robotics.handyboard
|
Date:
|
Tue, 18 Feb 1997 08:18:07 GMT
|
Original-From:
|
Richard Whitehead <Richard.Whitehead@ukos^antispam^.varian.com>
|
Viewed:
|
1611 times
|
| |
|
|
Actually I wanted an analogue signal giving some idea of distance.
I've done it with a 555 oscillator for illumination, and an opamp
demodulator circuit.
I was thinking that this might be useful on the expansion board.
Richard
______________________________ Reply Separator
_________________________________
Subject: Re: expansion board
Author: cmcmanis@freegate.net at Internet-Mail
Date: 14/02/97 17:10
Richard Whitehead wrote:
> It seems to me that the first thing most people want to add to their
> robots that is not supported on the handyboard itself, is IR
> collission detection.
I've got a PIC chip programmed with IR collision-detection built
into it (I'm trying to get some of the new 8 pin PICs to see if
I can make an "all in one" unit. Basically the interface is two
bits:
bit 0 output - Turn on IR illumination (double modulated)
bit 1 input - Reflection detected.
The code is a variation on the IR code that is on cher already. So
give me two I/O pins, one in and one out and I can put a reliable
IR detector on it. I can also repeat for 'n' detectors.
--Chuck
--
cmcmanis@netcom.com http://www.professionals.com/~cmcmanis
All opinions in the non-included text above are the sole opinions of
the author.
|
|
1 Message in This Thread:
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
