 | | IR Tower
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| Hi. I have a Puma IR adapter that I think is fairly generic -- it was provided to work with a Sony digital camera, but it receives regular IR remote control transmissions, and *almost* works with my RCX. However, it appears that the LEGO(r) IR tower (...) (26 years ago, 22-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| Dave, I would be curious if anyone has played with the laptop IR as well. It seems like this should be fairly easy to do. I have seen someone doing "something" with the palm IR, although not fully functional. The link is around here somewhere. Have (...) (26 years ago, 22-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| (...) They all have an extremely limited range, however. IrDA is designed to work at distances of < 1m. You can, however, get a high-power IR booster for the palmpilot, so as to use it as an A/V remote control. -Ian (26 years ago, 22-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| (...) Almost nothing. Tx is just the TXD signal gated to send the 38kHz carrier. It also ties into a timer circuit for the auto-shutoff. Rx is a little more complicated - a filter/amp/comparator system to detect the presence of 38kHz IR. I think (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| In article <dbaum-2212981930170...ract.com>, Dave Baum <lugnet.robotics@lugnet.com> writes (...) I have come across this statement (balanced 0's and 1's) several times but it is not quite true. It would be true if the RS232 frame was 8 data and no (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| =>From: Paul Haas <paulh@hamjudo.com> =>... =>The RCX doesn't echo, the IR tower is seeing it's own signal reflected off =>the walls. It's either seeing its own signal, or Tx is looped back to Rx, or something. My generic IR adapter doesn't do that (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| (...) legOS doesn't run the static constructors/destructors. I think. Yet. So C++ may not work as expected. There's also something weird going on still with memory layout. BTW, do you have instructions for getting egcs working? I tried but it didn't (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| =>From: Ben Laurie <ben@algroup.co.uk> =>... =>legOS doesn't run the static [C++] constructors/destructors. I =>think. Yet. So C++ may not work as expected. There's also =>something weird going on still with memory layout. I can handle the c/dtors, (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| (...) Look at the Hitachi H8/3292 documentation -- it has all of that for you. Briefly, ROM is 0x0000-3FFF, external address space is 0x8000-0xFB7F, internal RAM is 0xFD80-0xFF7F, external address space is 0xFF80-0xFF87, and the peripheral register (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| =>From: "John A. Tamplin" <jat@Traveller.COM> =>... =>Look at the Hitachi H8/3292 documentation -- it has all of that for you. =>Briefly, ROM is 0x0000-3FFF, external address space is 0x8000-0xFB7F, =>internal RAM is 0xFD80-0xFF7F, external address (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| (...) Right you are - but EE's often ignore effects less than 10% in calculations :-) I was referring to the practice of formatting the data such that a byte is always followed by its complement (except for the first part of a sync which is 0x55). (...) (26 years ago, 24-Dec-98, to lugnet.robotics)
| | | | | Re: IR Tower
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| (...) A thing Markus doesn't explain very clearly (if at all) is that if you hold down Prgm and switch it on, legOS vapourises, so you only have to do the battery trick when you crash it. Cheers, Ben. (26 years ago, 24-Dec-98, to lugnet.robotics)
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