Telerobotics : 18


Robotics / Telerobotics / 18	17 \| 19

Subject:	Duplex Comms with RCX
Newsgroups:	lugnet.robotics, lugnet.robotics.tele, lugnet.robotics.rcx.nqc
Date:	Wed, 26 Apr 2000 08:03:50 GMT
Viewed:	20 times

Hi I am sure this has been done many times before, but I am having trouble confirming information. I wish to purchase the RIS 1.5. But before I do I need to be sure that I can communicate with a running program on the RCX and that the RCX can communicate with the PC. I will only be wanting to send and receive simple commands. Is this possible? I think so. If it is, it would seem that using NQC is the best way to start. What issues am I likely to encounter? Range of the IR comms? Do the sender and receiver have to line up, or is line of sight sufficient? Experiences, hints and tips would be gratefully received. For information - we want to build a simple model robot, to be controlled by a PC. The robot will be used as a substitute for the real thing during development and testing. We are concentrating the development on the mission planning and control software. However another group are developing the real robot - all I can say is that it will use a vacuum seal to attach to vertical surfaces and drive around... Cheerio James -- James Hammond IT Innovation Centre 2 Venture Road Chilworth Science Park Southampton, SO16 7NP, UK tel: +44 23 8076 0834 fax: +44 23 8076 0833 mailto:jsh@it-innovation.soton.ac.uk http://www.it-innovation.soton.ac.uk/

Message has 3 Replies:

		Re: Duplex Comms with RCX
It appears Roblab 2.0 would also be an alternative for your project. Robolab has two different direct modes to control the RCX, one of which is using a remote connection like the Internet. Depending on your direct control requirements, you may want (...) (25 years ago, 26-Apr-00, to lugnet.robotics, lugnet.robotics.tele, lugnet.robotics.rcx.nqc)

		Re: Duplex Comms with RCX
"James Hammond" <jsh@it-innovation.soton.ac.uk> wrote in message news:3906A2E6.6A40E0...n.ac.uk... (...) Yes it can. There is a standard RCX opcode for sending single byte messages, and you can always use multiple of these commands for more complex (...) (25 years ago, 26-Apr-00, to lugnet.robotics, lugnet.robotics.tele, lugnet.robotics.rcx.nqc)

		Re: Duplex Comms with RCX
(...) Yes. Note that it is only half-duplex. You probably expected that. (...) The biggest issue you might run into is the fact that the IR tower used by the PC times out if it doesn't transmit anything for a few seconds. Unless you have constant (...) (25 years ago, 26-Apr-00, to lugnet.robotics, lugnet.robotics.tele, lugnet.robotics.rcx.nqc)

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