 | | Re: LeJos threads / sleep() takes too long
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Hi Bart, (...) if you mean LISTENER_THREAD then that sounds plausible. (...) Yes, LISTENER_THREAD has maximum priority, so it runs before any threads of lower priority, even yield doesn't help. (...) Yes, I think we'll have to fix that somehow. (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.java)
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| | Re: ForthPad v0.9
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I'm re-posting this message at the lugnet.robotics.rcx level in case anyone missed it. I've put together a stand-alone application which I am calling ForthPad. It is a Windows executable which should run on any version of Windows from 95 on up. It (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx)
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| | Re: ForthPad v0.9
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(...) The firmware downloader built into BricxCC is a port of Dave Baum's NQC code to Delphi. It calculates the checksum up to a length of 0x4C00. The limit of 0xCC00 is based on the sum of length + start (where start is = 0x800). John Hansen (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Pneumatics: the old and the new
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(...) And most other pneumatics systems do too, but its easier if you have a tank in which you have a high pressure (or a low pressure). (23 years ago, 6-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: exponents, e^
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you know i was looking at lejos, java for RCX, and it seems to have exponents, trig, etc. functions built in. any advantages legOS has over lejos i don't know about. if not, i think i may give it a whirl.... -dave (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.legos)
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| | RE: ForthPad v0.9
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(...) Thanks John, I'll try this soon. You may want to post this to the next level higher to let other non-pbForthers see what you are up to. Does your alternative firmware loader take into account the limit at 0xCC00? If the replacement firmware (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: exponents, e^
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Dave I am working on a number of maths functions that includes loge log10 expe and exp10 x^y as well as trig functions. As you note it requires the specification of the mantassa and exponent desciption of the float variable for the RCX. Usually this (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.legos)
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| | LeJos threads / sleep() takes too long
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Experimenting with Lejos, two 'major' problems: memory (cleaning up platform & lang: Math.class is huge!) and... threads. I have the impression my "try { sleep(nnn) }" takes a somewhat arbitrary time. It's 'at least' nnn milisec, but often much (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.java)
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| | Re: Pneumatics: the old and the new
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(...) Hey, don't blame me if it should fall off though ;-) Speaking of wall climbing robots, does anyone have or seen one of these 4-legged Climb@Tron creatures shown at (URL) look kinda cute especially Vertibug. And at $14.95 each, they're a lot (...) (23 years ago, 6-Mar-02, to lugnet.technic, lugnet.robotics)
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| | Re: Pneumatics: the old and the new
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(...) Hi, those who have the old pneumatics and a couple of the blue air tanks may want to try the experimental setup at (URL) it! And I suspect the window walker critter would still work without the air tanks :-) (23 years ago, 6-Mar-02, to lugnet.technic, lugnet.robotics)
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| | exponents, e^
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hello, i've searched through the discussions but i haven't been able to find any info on using floats with exponents in legOS, specifically the inverse of natural log: e^. actually, i can't find any info about integers with exponents either. i am (...) (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.legos)
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| | Re: ForthPad v0.9
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As an aside, I think it might be a straightforward matter to make emacs communicate with the RCX (or intermediary) and then you've got a full blown editor to work with (ie, there are already forth highlighting modes). (23 years ago, 6-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Strengthening Gears
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(...) Bruce ---...--- WWW.SYSTRONIX.COM Real embedded Java, fast 8051s, & more +1-801-534-1017 Salt Lake City, USA ---...--- (23 years ago, 6-Mar-02, to lugnet.robotics)
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| | ForthPad v0.9
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I've put together a stand-alone application which I am calling ForthPad. It is a Windows executable which should run on any version of Windows from 95 on up. It is a simple Forth editor that performs user-configurable syntax highlighting. Users of (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Vision Command $29.99 @KB Toys online
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I live in the UK and KB Toys will not ship internationally. This sucks as this is a massive saving. Would anyone out there consider buying me a VC and shipping it over if I send over a cheque to cover all costs? -- Lee Wilson ---...--- (...) (23 years ago, 6-Mar-02, to lugnet.robotics)
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| | Re: Strengthening Gears
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It appears a great way to test this would be to use a simple torque wrench. Use a metal axle, (to show stress at this connection). A metal axle will also not twist to give a false reading on the wrench. Fix a point at the gear teeth. Loading up the (...) (23 years ago, 5-Mar-02, to lugnet.robotics)
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| | Re: Strengthening Gears
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(...) Perhaps doping axles would be a good idea... --Mike (23 years ago, 5-Mar-02, to lugnet.robotics)
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| | RE: Palm and pbForth
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(...) Yes, this is very easy to do. I'd have to change the GUI I supply too, but that would not be too bad... (...) It's not pbForth that's the problem, it's the host-side software that I need to update to use the USB tower. (...) The RCX does not (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Palm and pbForth
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(...) If you changed pbForth to use 2400,o,8,1 instead of 2400,n,8,1 wouldn't that make it work with the USB tower? It seems to me like that is what the standard Lego firmware expects from either tower. That appears to be how it works under Windows, (...) (23 years ago, 5-Mar-02, to lugnet.robotics.rcx.pbforth)
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| | Re: Strengthening Gears
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FUT: lugnet.technic (...) There's a lot of talk and little workshop here. I know nothing about gear streangth, I have never broken a gear - unitl today. Feeling the only way to settle this is to actually test it: 1) I took a z16 gear and boiled it (...) (23 years ago, 5-Mar-02, to lugnet.technic, lugnet.general, lugnet.robotics, lugnet.build.mecha) !
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