 | | Re: Sign of center pin on power adaptor
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(...) The one used for the RCX may be, but the NXT power supply is sold as a different item, and is listed as a 10VAC adapter vs. the 9VAC adapters used by trains and various other systems. Not that it matters unless you also buy the Li-Ion battery (...) (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | Re: Sign of center pin on power adaptor
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(...) I now have a Dynamic Instruments 16VAC 375mA, AT&T AC 9V 800mA, and a Black & Decker 9V 200mA from a Dust Buster but it does not say if it is DC or AC, I am assuming AC. Which one should I use? I am hoping the AT&T but the 800mA makes me a (...) (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | Re: Sign of center pin on power adaptor
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(...) It's the same PSU as used for the 9V train controllers. (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | Re: Sign of center pin on power adaptor
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(...) The wall wart for my RCX says "output 10.8VAC 700mA 8w" so it sounds like the rectifier is in the RCX, not the wall wart. (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | Re: Sign of center pin on power adaptor
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(...) Wow, I do not have a 10V AC adapter but I am sure I can get one at Radio Shack. Thanks a million, Tom (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | Re: Sign of center pin on power adaptor
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(...) I once came across a box full of old wall wart power supplies at a rummage sale and after digging through it for 10 minutes or so I found three that had 12V AC and the correct plug for the RCX. They work perfectly and I think I paid about $1 (...) (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | Re: Sign of center pin on power adaptor
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(...) 9V (orientation doesn't matter). But I wouldn't recommend it as there have been reports of burnt out rectifiers from people doing that. Hope this helps, ROSCO (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | Sign of center pin on power adaptor
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I am looking for the sign of the center pin on the RCX 1.0 power adaptor plug. I have a DC 9v 200ma transformer and want to plug it into the RCX but I do not know what the sign is on the center of the plug. It looks like the rush on buying the old (...) (17 years ago, 10-Jul-07, to lugnet.robotics.rcx)
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| | RCX Code - Light Raw Values
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Hi people, Its possible to configure/read RAW light sensor values with RCX CODE? I think i saw it sometime ago, but i could not find it. Thanks in Advance Patrick J. Levy ___...___ Omiccron Programação Gráfica Ltda. 11 3288-4832 (...) (17 years ago, 30-Jun-07, to lugnet.robotics.rcx)
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| | Alternate firmware upload from MacOSX
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Hi all, We're trying to wrap up our alternative runtime for the RCX (first), and soon the NXT. I am struggling, however, to upload our firmware from the Mac using a USB tower. I can upload using a serial or USB tower from both Windows and Linux... (...) (17 years ago, 10-Jun-07, to lugnet.robotics.rcx)
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| | Re: IR Problems
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(...) tom@tomlohre.com is my private address (18 years ago, 14-Apr-07, to lugnet.robotics.rcx)
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| | Re: IR Problems
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(...) tom@tomlohre.com Dear Claude, Thanks for your message. I have delayed in replying to the excellent advice concerning communication with more than one RCX. Last night in a dream I realized that I could just bypass communication placing two push (...) (18 years ago, 13-Apr-07, to lugnet.robotics.rcx)
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| | Re: IR Problems
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(...) Thank you for the excellent information concerning communication with more than one RCX. Last night in a dream I realized that I could just bypass communication placing two push button sensors where needed driving the additional RCX. The (...) (18 years ago, 13-Apr-07, to lugnet.robotics.rcx)
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| | Re: IR Problems
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Hi Tom, I tried to send you a private mail, but the email address I have doesn't work anymore. Could you give me the new one? -Claude (18 years ago, 3-Apr-07, to lugnet.robotics.rcx)
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| | RE: IR Problems
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Elizabeth is quite right. It's easy to get collisions on the IR "bus" if two devices are sending (or replying) simultaneously. What I've done in the past with two RCXs is define one RCX as primary that is periodically (every 100 to 250 milliseconds (...) (18 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | RE: IR Problems
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RCX IR does not require direct line of sight. All sorts of reflections will work. Especially if you're in a "smallish" (bedroom, home office) room. The RCX firmware always has the IR turned off. "Wait for mail" and "send mail" is just a higher (...) (18 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | RE: IR Problems
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IR communication is no where near the reliability like a tcp/ip. You can easily lose a message ... so program must be either extremely simple one way communication. The sender should be programmed to handle message loss. What I had the kids done was (...) (18 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | Re: IR Problems
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(...) Thanks for your reply. I had to return the 1.0 RCX and motor back to school today. Those things are like gold. The 1.0 faces the 2.0 and is not in direct line of sight of the tower. The 1.0 is just to the side of the tower. I think my problem (...) (18 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | RE: IR Problems
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Are you sure your problem isn't interference? How did you "lock out" the RCS 1.0 from receiving (and responding) to the direct commands? You have two RCXs turned on and sending direct commands from the PC. They will both try to respond to the (...) (18 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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| | IR Problems
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I have been running RoboLab 2.54 B on a Dell Inspiron 1100 with little problem until of late. I am using direct mode, tower set to high and the 2.0 RCX and tower are 3” from each other with the 2.0 RCX raised up 1” to better line up with the tower. (...) (18 years ago, 2-Apr-07, to lugnet.robotics.rcx)
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