 | | Make a goal by the IR port on RCX
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I am working on a robotic assignment with RCX by legOS. It is a small RCX vehicle that move around. I want to add a goal for this vehicle. Say, move towards a certain direction. However, all the 3 sensors port had been used up for some purpose. So I (...) (24 years ago, 15-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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(...) I have seen many others use the infrared port as a source of light which is used in conjunction with a light sensor to create a range finder, but I have never heard of anyone using the port itself as a sensor. Is there a way to read the (...) (24 years ago, 15-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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(...) It may be possible to overload the sensor ports. Can you tell us what types these sensors are, and what they are used for? (...) I did it once, not with LegOS though. See (URL) for details. Sadly, that can-retrieval project is left unfinished. (...) (24 years ago, 15-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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(...) If there is no way to free an input port for a light sensor you can try other ways with IR. You could use a PC to send messages to the RCX "turn left", "turn right", "slow" and so on. Now the problem is, how does your PC know which direction (...) (24 years ago, 15-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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(...) (Or a Scout - which ought to be cheaper and may actually be enough in this case - since it's only a slave to the main RCX.) (24 years ago, 15-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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(...) You might try this: stand two mirrors on edge at 90 deg to one another. This creates a corner reflector which will reflect light back in the direction from which it came. Have the robot first search for this reflection and then move toward the (...) (24 years ago, 16-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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A simple on/off sensor can be placed in series or parallel with other on/off sensors however analog sensors cannot. It should be pointed out that if you do group sensors, it becomes impossible to determine which one was actually triggered. This (...) (24 years ago, 16-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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(...) You can't technically overload an input port. Output ports (motors, lights,etc) are a different story. Matthias Jetleb VA3-MWJ (24 years ago, 16-Feb-01, to lugnet.robotics)
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| | Re: Make a goal by the IR port on RCX
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Thanks for all of the suggestions from all of you. As the 3 input port had been occupied by 3 analog sensors (not light sensor, but declear as light sensor in program), so I do not think overloading a sensor is a good idea. The suggestion of (...) (24 years ago, 16-Feb-01, to lugnet.robotics)
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