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In lugnet.robotics.cybermaster, Danny Staple wrote:
> > Is it possible to interface a cybermaster and an RCX without the use of a
> > PC, also without using up all sensor and motor ports?
> >
> > Sincerely,
> > Morten H Pedersen
>
>
> It might be theoretically possible to use one RCX sensor port for control
> of the cybermaster - and using the one motor and one sensor port on the
> cybermaster.
>
> Danny
This might be old news, but I just tried it anyway...
You can connect an RCX motor port to a CyberMaster sensor port and vice versa
and get tri-state info. You can distinguish between the motor floating, off,
and one of forward or reverse (seems to depend on the which way round things are
connected). I haven't written any code for this, but I got reliable results
from Brixcc's watch and command interfaces.
The downside is that it takes one motor/sensor pair in each direction, which
isn't great. I also have no idea if it's a safe thing to do or whether you
eventually burn something out.
The other downside is that with only 395 bytes of code in the CyberMaster, you'd
want your messages to be very simple to keep the decoding code to a minimum.
In my current project I have but 1 byte free in my CyberMaster... :-)
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