Re: The NXT bit of information...

here's another idea, probably more practical.  Have one of the NXT's servos
crank an RCX rotation sensor.  I'm thinking of a RIS-based differential
platform, with a NXT upper body, turning something like a steering wheel.  

Now that's cooking with gas!


--- dan miller <[email protected]> wrote:

> --- John Barnes <[email protected]> wrote:
> 
> > 38kHz. You will have to change the LED state every 13uS with good
> accuracy
> > in
> > order to make the electronics in the RCX's IR sensor recognise the
> signal.
> > With
> > everything elso going on in the NXT, that may prove difficult.
> > 
> Ok, here's a real hacker's hack.  I've played around with raw IR readings
> on
> RCX under BrickOS (ignoring all protocol stuff).  You can basically get it
> to read _something_ with any light source that triggers the sensor.  I
> suspect it's a typical 1-start, 1-stop, 8-bit async uart.  So in theory,
> you
> could read signals with say 50 or 100 us timing, but you would only get
> one
> or two readable bits out of each byte (in practice, certain ranges in the
> byte read would indicate a zero or one).  Nuts maybe, but could enable you
> to pass messages from NXT to RCX.
> 
> Just a crazy thought...
> 
> -dbm
> 
> 
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