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 | | Re: The Future of Trains
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| (...) You are right, the main limitation probably comes from wall wart... You are essentially right for the 0.7A current (though it is not hard limit, rather a safety one). Philo (17 years ago, 9-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
| | | | | Re: ARM Assembly Language Programming on NXT?
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| (...) Thanks for the tip. I glanced at (URL) previously but I must've missed it thinking it's Java based. (...) Are you referring to the default NXT firmware or the LEJOS NXJ/OSEK firmware? (...) You're right, I've come across several ARM-based SBC (...) (17 years ago, 9-Oct-07, to lugnet.robotics.nxt.nxthacking)
| | | | | Re: ARM Assembly Language Programming on NXT?
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| (...) Thanks Dick for intruducing LEJOS OSEK, When we develolped LEJOS OSEK, Prof. Mizuno wrote several GCC assembly code to port TOPPERS OSEK (an open source OSEK OS) to NXT. Whole assembly code(*.S) is stored in lejos_osek\toppers_o...1sam7s-gnu (...) (17 years ago, 9-Oct-07, to lugnet.robotics.nxt.nxthacking)
| | | | | Re: The Future of Trains
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| (...) The Australian LEGO wall wart is marked 10V @ 7VA on the secondary. I don't recall all the stuff I learnt about the relationship between VA and W, but that seems to me to indicate about 0.7A. I believe this generally reduces as load increases, (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
| | | | | Re: The Future of Trains
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| (...) At BayLTC we usually run four train motors on one loop using stock Controller with a 1.2 amp wall wart. Bruce (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
| | | | | Re: The Future of Trains
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| (...) The linear regulator inside is a 1.5A version if I remember well, but I may be wrong. Cross posted to lugnet.trains trying to get train guru opinion... Philo (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt, lugnet.trains)
| | | | | RE: ARM Assembly Language Programming on NXT?
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| Do a Google on "LEJOS OSEK". I believe this is a solution that has taken the base "OS" from the NXJ JAVA byte code interpreter as the basis for programming the NXT using GCC C++. I assume if you can use the GCC C/C++ tools with the NXT then you (...) (17 years ago, 8-Oct-07, to lugnet.robotics.nxt.nxthacking)
| | | | | Re: The Future of Trains
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| (...) Philo kindly corrected me, pointing out that the NXT outputs are regulated down to 1 A, so you couldn't run a dual-truck train all the way to stall. You could still get a good bit of the way there, however. Does anyone know what the peak (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
| | | | | Re: The Future of Trains
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| (...) Ah, thank you - so running two stalled train motors would exceed the NXT output, but running one train motor up to a stall conditions should be fine. Out of curiosity, along with the output limitations on the NXT (1 A) and RCX (500 mA), does (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
| | | | | Re: The Future of Trains
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| (...) Some precisions here: - NXT stall current is 2A but only for a short time: internal thermal protection will trip at a current much lower than that (exact value depends on temperature and overload duration). A practical value is about 1A - NXT (...) (17 years ago, 8-Oct-07, to lugnet.lego, lugnet.robotics.nxt)
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