 | | Re: Handyboard low voltage motor control
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That'll work, of course, but that also means I'll be dissapating about 8 volts at .5A through the resistor... Gary Livick wrote in message <380B55B1.1C3703C4@p...ll.net>... (...) to (...) still (...) but (...) (26 years ago, 18-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard low voltage motor control
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Good point... There is another way. You can build your own h-bridges using mechanical relays and maybe a few diodes. They drop zero volts, which is good. However, you obviously can't PWM the things. If you just want rudimentary speed control, you (...) (26 years ago, 18-Oct-99, to lugnet.robotics.handyboard)
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| | Lego Mindstorms Tower
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Anyone know where I can order a replacement IR tower for my Mindstorm? Thanks <G> (26 years ago, 18-Oct-99, to lugnet.robotics)
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| | RE: AI and even more exiciting stuff
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32K is a ton of memory for embedded 8 bit code... if you need data storage and processing then that's an entirely different thing -- it could easily make AI difficult. As far as fixed point vs. floating point, I once worked on a project where they (...) (26 years ago, 18-Oct-99, to lugnet.robotics)
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| | Re: AI
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Yes you can, just take a look at some of the projects on my website. CU Bert Lego robots and artificial intelligence (URL) Can we make these things learn? (...) program 1 write program 2, write to program 3 etc, and use a some kind of a genetic (...) (26 years ago, 18-Oct-99, to lugnet.robotics)
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| | Question:Where do I find a cutaway of a Pnumatic Valve
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I know someone has a web page with some pictures of a LEGO pnumatic valve cut open/opened up. Could someone point me to the URL for it? James Powell (26 years ago, 18-Oct-99, to lugnet.robotics)
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| | Re: Lego Mindstorms Tower
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Keith, LEGO Dacta, #979713 US$25 800.362.4308 (URL) - Nick - (...) (26 years ago, 18-Oct-99, to lugnet.robotics)
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| | RE: AI and even more exiciting stuff
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(...) Ummm, respectfully, yes. If the team took days to rework the code when control data tables change, then they were not using tools and methods appropriate to the task at hand. I'm hoping you weren't "them" :-) The algorithm is the same whether (...) (26 years ago, 19-Oct-99, to lugnet.robotics)
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| | Announce: NQCIPC -- simple IPC for Not Quite C programs
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I'm proud to announce the release of NQCIPC, a package implementing simple semaphores and messaging for Not Quite C running under MindStorms and Cybermaster. The API is fairly simple, and provides for intertask communication in RCX programs. The (...) (26 years ago, 18-Oct-99, to lugnet.robotics)
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| | Re: Announce: NQCIPC -- simple IPC for Not Quite C programs
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[forwarding a copy to the .rcx.nqc newsgroup... --Todd] (...) (26 years ago, 19-Oct-99, to lugnet.robotics.rcx.nqc)
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| | Re: RCX Firmware and SP
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(...) [...] Hi Ralph, Could you please explain more about consequences for pbFORTH user? As far as I can see, pbFORTH uses fixed 256-byte stack - does it mean that pbFORTH suffers from this problem too? Thanks Sergey Udovenko (26 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | Wot no RCX power connector?
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When did this vanish then? All the online information I can find says that the RCX has a 6-12V AC power connector. My one that I bought this weekend doesn't :( (26 years ago, 19-Oct-99, to lugnet.robotics)
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| | Re: Data acquisition through analog input
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I am sorry, it is www.glolab.com ----- Original Message ----- From: Mulampaka, Kalyan (GEIS, ASI) <Kalyan.Mulampaka@geis.ge.com> To: William Ho <ukho@tm.net.my> Sent: Monday, October 18, 1999 11:10 PM Subject: RE: Data acquisition through analog (...) (26 years ago, 19-Oct-99, to lugnet.robotics.handyboard)
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| | Re: Wot no RCX power connector?
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I just bought a second RCX (version 1.5., on sale at K's Merchandise here in Illinois for $155). I just checked--it doesn't have a power connector either! :( Mike Kory Kevin Bracey <kevin.bracey@pacemicro.com> wrote in message (...) (26 years ago, 19-Oct-99, to lugnet.robotics)
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| | Wot no RCX power connector?
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RIS for $155!!!!! Is that a special discount limited offer price!!! Limit one per household? The RCX brick lists for $129. So you get all the rest for $26!! JB (26 years ago, 19-Oct-99, to lugnet.robotics)
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| | Re: Wot no RCX power connector?
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Does this mean that RIS 1.0s are going to rapidly become *more* valuable than RIS 1.5s?! Stuart PS That seems a very cheap price - I thought they were $210? (...) (26 years ago, 19-Oct-99, to lugnet.robotics)
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| | Re: Wot no RCX power connector?
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I just pulled out my receipt. It was $155.97. That's 20% off their normal price. I bought the last one at my store here in Champaign, Illinois. I don't know where the other stores are. If I remember correctly, they had the Droid system for about (...) (26 years ago, 19-Oct-99, to lugnet.robotics)
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| | RE: RCX Firmware and SP
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(...) Unfortunately, yes. The current version of pbFORTH allocates a 256 byte stack, but it's JUST above a 256 byte boundary. When you run the test code, everything works, but if your stack depth is around 12 and you run SENSOR_READ, it allocates (...) (26 years ago, 19-Oct-99, to lugnet.robotics.rcx.pbforth)
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| | RE: Wot no RCX power connector?
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(...) My guess is it vanished after they got too many "defective" units back after folks started putting adapters with the wrong voltage on their bricks. Even a wired voltage spike might kill the brick. The battery route is safer from a product (...) (26 years ago, 19-Oct-99, to lugnet.robotics)
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| | RE: Wot no RCX power connector?
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(...) Correct me if I'm wrong, but doesn't that mean that TLG have effectively been lying if they claimed that the RCX unit itself is still the RCX 1.0? It seems like it may be worthwhile complaining (does anyone know an email address for (...) (26 years ago, 19-Oct-99, to lugnet.robotics)
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