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Subject: 
Re: NXT to RCX Communications
Newsgroups: 
lugnet.robotics.nxt
Date: 
Thu, 5 Oct 2006 02:23:03 GMT
Viewed: 
10861 times
  
In lugnet.robotics.nxt, "John Carrasquillo" <joev@hvc.rr.com> wrote:

Is it possible for the NXT to send Run Program commands from the
NXT to RCX via a light sensor?

No. The light sensor can have the red LED either on or off - you can't set it to
"20%" or something like that, and there's no way to toggle the LED fast enough
to mimic or RCX-style IR message. But...

You could cetainly have a program constantly running on the RCX, looking for a
change in light level, and use that to sense when the NXT was turning its LED on
the light sensor on or off. With proper timing, the RCX could also turn the LED
on the old-style sensor on/off, (by switching between active and passive modes),
thereby signaling the NXT. People have used this before for RCX-to-RCX "secure"
communication, for instance.

I have the NXT to RCX communications adapter from Mindsensors
but I have no programming experience.

Well, once you learn to use that you won't be limited to mechanisms like the
above... and you'll free up more sensor ports. Use it, if possible.

--
Brian Davis



Message has 1 Reply:
  Re: NXT to RCX Communications
 
----- Original Message ----- From: "Brian Davis" <brdavis@iusb.edu> To: <lugnet.robotics.nxt...ugnet.com> Sent: Wednesday, October 04, 2006 10:23 PM Subject: Re: NXT to RCX Communications (...) Thanks Brian. I might as well use the time to try and (...) (18 years ago, 5-Oct-06, to lugnet.robotics.nxt)

Message is in Reply To:
  NXT to RCX Communications
 
Hello everyone: Is it possible for the NXT to send Run Program commands from the NXT to RCX via a light sensor? Here is an example: 1- The NXT Ultrasound sensor detects an object close by, triggers the NXT light sensor to light up at 20 percent (...) (18 years ago, 5-Oct-06, to lugnet.robotics.nxt)

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