 | | LeJOS resource question
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I recently purchased Brian Bagnall's book on LeJOS programming, and was both impressed by what JAVA can do as well as frustrated with trying to learn something new. (The only programming course I have taken was FORTRAN, back in the Jurrassic era). (...) (23 years ago, 12-Apr-02, to lugnet.robotics)
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| | Re: RCX Firmware speed versus legOS
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(...) Of course you are right. <shame on me> (...) Hm? You don't use the gcc toolchain for the H8 but another compiler? Can you tell a bit more about your compiler? I revised my testings without optimizing out the calculation and the empty loop took (...) (23 years ago, 12-Apr-02, to lugnet.robotics)
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| | Release candidate legos-0.2.5.2 avail for testing
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Details regarding release content, download instructions and how to provide feedback are at (URL) change detail specific to 0.2.5.2 see the file: ChangeLog Highlights: Added missing file TODO Repaired slow-mode IR comm. for Linux We look forward to (...) (23 years ago, 12-Apr-02, to lugnet.robotics.rcx.legos)
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| | Re: RCX Firmware speed versus legOS
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"Michael Obenland" <obenland@t-online.de> wrote in message news:GuEtHr.M39@lugnet.com... (...) but only (...) assume (...) I was surprized at the wide disparity between 'empty loop' and loop with 'reading the sensor'. I suspect there is significant (...) (23 years ago, 11-Apr-02, to lugnet.robotics)
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| | Re: Ultrasonic Sensor
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Hello All, Many thanks to all who replied to my original post on this topic. The hardware is build (and works - sometimes(!!!)) and I am now writing the thesis for the project. It is due for submission next week, and if anyone would be interested in (...) (23 years ago, 12-Apr-02, to lugnet.robotics)
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| | RCX Firmware speed versus legOS
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The discussion about the Firmware speed is intresting indeed. So I did a fast, by no means representative, reserch. The following program is a legOS program reading the light sensor, calculating some values and printing the elapsed time: ---...--- (...) (23 years ago, 11-Apr-02, to lugnet.robotics)
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| | Re: Turning the RCX off and on again (was: New pbForth 2.1.0 (and firmware speed))
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For the Workshop3D Event I use the following construct, the button handling is from the book "Extreme Mindstorms": : main ( -- ) \ Main Task init \ do main initialize ( ... ) BEGIN ( ... ) BUTTON_SCAN BUTTON_RUN? IF ( ... ) \ Calibrating BEGIN ( ... (...) (23 years ago, 11-Apr-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | RE: Turning the RCX off and on again (was: New pbForth 2.1.0 (and firmware speed))
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I need to look at some items for Joerg, but I'll also look at a small supervisor that integrates the View,Run,Prgm,and On/Off buttons. This hsould be pretty easy and would be a good bit of example code. Cheers, Ralph (23 years ago, 11-Apr-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | Re: Turning the RCX off and on again (was: New pbForth 2.1.0 (and firmware speed))
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(...) off (...) True. But I find not very practical to be forced to use the terminal to switch off the RCX or start the program again, expecially when you are attending a contest or take your robot to an exhibit. What I meant by "supervisor" is some (...) (23 years ago, 11-Apr-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | Two RCX with one IR-Tower
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Hello, I want to control two RCX with one ir-tower. The problem is that the RCX should send back status information. Sending information to the RCX is quite easy: Both RCX receive the message but only one will perform the command. I found (...) (23 years ago, 11-Apr-02, to lugnet.robotics.rcx)
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| | Re: Turning the RCX off and on again (was: New pbForth 2.1.0 (and firmware speed))
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(...) If you have the new version 2.1 the POWER-OFF word via terminal to shut off and the red button to power on works fine. If you have an earlier version (1.2x) you have to use the words RCX_INIT and POWER_INIT to initialize the brick and the (...) (23 years ago, 11-Apr-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | Turning the RCX off and on again (was: New pbForth 2.1.0 (and firmware speed))
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Mario, i'm interested in pbForth example scripts, too. Furthermore, the "supervisor" you suggested could be the answer to one of my questions in (URL) concerning turning the RCX off and on without loosing pbForth: 2) According to Knudsen, i have to (...) (23 years ago, 11-Apr-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | LEGO Satellite Uplink
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Imagine what happens when a TV truck pulls up to a crime scene and the technician has to establish a Satellite Uplink for his live news feed. My latest project is a LEGO Dish that is motor driven, both in azimuth and elevation. It scans back and (...) (23 years ago, 10-Apr-02, to lugnet.robotics)
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| | Interesting robotics article at Wired.
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Hey folks, Just read this and thought it was interesting enough to pass on. Not exactly Lego related but it might give some people ideas on directions to build in. (URL) Baydar bbaydar@hfx.eastlink.ca (23 years ago, 10-Apr-02, to lugnet.robotics)
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| | Re: New pbForth 2.1.0 (and firmware speed)
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Thanks Ralph, this is great news. I just got the new USB tower, and considering my revived interest for pbForth your new version arrives really at the right time. What IMHO would really boost the spreading of pbForth, is the availability of some (...) (23 years ago, 10-Apr-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | RE: SpyBots @ Amazon
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At the risk of digressing and sounding horribly stupid, has there been any (pseudo-/semi-)official word yet on the computer type/capabilities of the SpyBots? Andrew Burton phone. (334) 876-9259 email. superboy@wccs.cc.al.us (...) (URL) (23 years ago, 10-Apr-02, to lugnet.robotics)
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| | New pbForth 2.1.0 (and firmware speed)
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For everyone that has been interested in firmware speed over the last few days, I am ready to announce the latest version of pbForth. This version supports the USB tower under Windows!!!! (URL) An empty loop of 20,000 interations takes less than 1 (...) (23 years ago, 10-Apr-02, to lugnet.robotics.rcx.pbforth, lugnet.robotics.rcx)
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| | Re: Light Sensor help
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"Steve Baker" <lego-robotics@crynwr.com> wrote in message news:3CB39250.8CC16B...ail.net... (...) what (...) you (...) storage (...) If you need to use a lookup table where you know the values of the table at compile time, using a case statement (...) (23 years ago, 10-Apr-02, to lugnet.robotics)
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| | Re: RCX Firmware Speed
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Dick, Nice post, and an iteresting topic. My timings differ a little for v2.0 beta, but they are basically the same. My timings use an interal timer as do yours. My multi-task measurement shows that the 3mS framework does not apply to every (...) (23 years ago, 10-Apr-02, to lugnet.robotics)
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| | Re: RCX Firmware Speed
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Firstly, thanks very much for that detailed answer. That was exactly the information I was looking for. Somewhere in the thread it was suggested that each task gets one opcode executed every 3ms, actually, as you show, they all get one opcode (...) (23 years ago, 10-Apr-02, to lugnet.robotics)
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