 | | Re: LEGO MindStroms 2.0: Alternative transmission techniques —Øyvind Steinnes
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| | | I have seen IR-to-RF converters for sale. They are been used for remote control of any TV/VCR units without having the line of sight from the TV/VCR-remote controller to the unit. It is working like this; the remote controller sends a IR signal to (...) (22 years ago, 20-Oct-02, to lugnet.robotics)
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| | | | | Project WIRRL Update —Rob Limbaugh
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| | | | Hello everyone, WIRRL stands for "Wireless Infra-Red Radio Link". Creating each leg of the RF link independantly isn't really a problem (once you have a reliable 38kHz IR carrier wave). The problem is eliminating link feedback by controlling the (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
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| | | | | | Re: Project WIRRL Update —Tim Auton
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| | | | | I'm looking for an RF solution for PC-RCX communication as well, been thinking along very much the same lines as Rob seems to have so far, I too was pondering how to deal with TX/RX switching (though I've not got as far as building a circuit, and (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
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| | | | | | | Re: Project WIRRL Update —Tim Auton
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| | | | | | Replying to myself... I dismissed commercial solutions (proper radio modems) because they all looked too expensive. But I've found a beauty: (URL) RS232 @ 38.4Kb full duplex, 15Kbit rf, integral antenna, just under £30 (~$50) each for single units. (...) (22 years ago, 21-Oct-02, to lugnet.robotics)
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| | | | | | Another update for WIRRL —Rob Limbaugh
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| | | | To those interested, I've made a new schematic (WIRRL Rev. 2a) using a better TX/RX pair (Linx LC Series) and I think I've found a possible better solution for handling flow of data. This new diagram eliminates three transistors and replaces the (...) (22 years ago, 22-Oct-02, to lugnet.robotics)
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