 | | Re: detecting goal objects at a distance —Uwe Denzer
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| | | (...) I imagine that - even if using such an IR LED as a beacon - roomlight etc. will still be the major problem. So, I'm pretty sure that a quite simple means at the detector side would simplify such a project dramatically: an optical IR filter. (...) (25 years ago, 31-Dec-99, to lugnet.robotics)
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| | | | | Re: detecting goal objects at a distance —Ben Jackson
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| | | | (...) Well, I do now! I bought three last night. I got a GaAs IR LED that was clearly made for a remote control application. The good news is that when it is pointed at the LEGO light sensor it pegs at 100%! Unfortunately it's higly directional (it (...) (25 years ago, 31-Dec-99, to lugnet.robotics)
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| | | | | | Re: detecting goal objects at a distance —Uwe Denzer
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| | | | | (...) Well, I knew that camera stores sell IR blocking filters but IR transmission filters? Are you sure? (What would be the purpose for normal photography?) Uwe (25 years ago, 1-Jan-00, to lugnet.robotics)
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| | | | | | | Re: detecting goal objects at a distance —Ben Jackson
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| | | | | | (...) IR Photography, of course. Lookup Kodak HIE, for example. The filters you are looking for are Wratten #87 and 87C. If you look at them they appear to be black because they pass no visible light. I believe the difference between the two is (...) (25 years ago, 1-Jan-00, to lugnet.robotics)
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| | | | | | | | Re: detecting goal objects at a distance —Uwe Denzer
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| | | | | | (...) OK, thanks for the info. That's interesting. I'll look for it. Uwe (25 years ago, 1-Jan-00, to lugnet.robotics)
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| | | | | | Re: detecting goal objects at a distance —Mario Ferrari
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| | | | Thanks a lot Ben! I'm going to look for some of those IR LEDs and make some experiments. Mario (...) appropriate (...) it (...) higly (...) a (...) made (...) LEDs (...) the (...) together (...) and (...) know (...) etc. (...) filter. (...) nice (...) (25 years ago, 3-Jan-00, to lugnet.robotics)
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| | | | | | RCX Web Server —David Pfeffer
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| | | | -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, I've been working on a RCX web server, and it seems my project is almost done. When I finish it, the website running off of the RCX will be available at (URL) Its not up yet, but it will be (...) (25 years ago, 3-Jan-00, to lugnet.robotics)
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