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Since I am currently working on line following, I did some tests with the Lego active light sensor. I mounted one on a small test cart pointing down a bit more than 1/8 inch above the "ground". The 1.5 test pad reads white 57 black 38 green 46 I (...) (25 years ago, 28-Jan-00, to lugnet.robotics.rcx)
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| | Re: Curious problem with download
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(...) Er, no I was thinking of the PCI cards that give up to 4 serial ports; KeySpan used to make them. They were a short PCI card with two or four serial ports, which used a custom extension to route SerialToolBox calls to the 'phantom' serial (...) (25 years ago, 28-Jan-00, to lugnet.robotics.rcx.nqc)
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| | Re: Curious problem with download
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(...) I would have ascribed it to the USB to serial converter, but I also see this on the Sun with a real serial port. This is what makes me think it's a problem with my RCX or IR tower. Thanks, -Pete P.S. What you are thinking of is the stealth (...) (25 years ago, 28-Jan-00, to lugnet.robotics.rcx.nqc)
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| | Re: legOS timers
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(...) You nicer than msleep() and sleep()? --Ben (25 years ago, 28-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Curious problem with download
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(...) downloading (...) I don't see any strange behaviour here; the hinky USB-to-serial interface is going to be your culprit. I had no problems using NQC on my PowerCenterPro (PowerComputing Macintosh clone) with a direct serial interface, but when (...) (25 years ago, 28-Jan-00, to lugnet.robotics.rcx.nqc)
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| | Curious problem with download
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I just got Mindstorm set, and since I do not have a PC, NQC seemed like a great place to start. I tried Mac NQC and did not get very far downloading the RCX firmware. Every attempt resulted in the IR tower not seeing the RCX. I have a G3 blue and (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.nqc)
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| | Re: LegOS does not work on 1.5 RCX
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Before anyone replies to my previous message, found the problem. I have a light over my desk and this was interfering with the IR transmission. Turned the light off and moved the RCX a little closer to the tower and hey presto, all OK. Does legOS (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | LegOS does not work on 1.5 RCX
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Hi I installed the win version of legOS and downloaded the firmware legOS.srec to both my RCX's. The older RCX from a 1.0 set seems to accept .lx files OK the first time after the firmware is downloaded. The new version will not accept any .lx (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | more on the rotation sensor
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I did some more experiments last night. My conclusion is that the majority of apparent 2-state transitions never actually occur (that is: the sensor does not actually travel through 2 states between two consecutive sensor readings). The order of the (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | legOS timers
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Hi! Did anyone write any 'nicer' wrapper functions for handling the RCX timers? Or am I blind and can't find them? 8^) /Vlad (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | FW: installation problem!
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-----Original Message----- From: George Lampke [mailto:glampke@verinet.com] Sent: Thursday, January 27, 2000 12:50 PM To: Ralph Hempel Subject: Re: installation problem! You are right Ralph. Using the command line version of NCQ works to load (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.pbforth)
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| | RE: installation problem!
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(...) I've only verified pbForth being uploaded using the commandline version of NQC. (...) This is good. Has anyone else out there tried RCXCC to upload the pbForth firmware???? Cheers, Ralph Hempel - P.Eng ---...--- Check out pbFORTH for LEGO (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.pbforth)
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| | Re: Light sensors
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(...) more light and is working.... Erm... it isn't really working - it exhibits the same 'inverted' behaviour, looking for a white line on a black background... /Vlad (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Light sensors
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Hi! Maybe this is obvious for all experienced legOS users - I am displaying the values read from the light sensor on the LCD, and I get values of ~30 for light and ~520 for darkness... This seems very strange - is it the display wrong, or are these (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: Firmware startup bug?
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I have replaced my batteries without erasing the firware several times. The trick is replacing the batteries one at a time with the brick turned off. You have then several (10 or so) seconds between each replace. If you leave the brick switched on (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | installation problem!
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Running Windows98. All works well with original RCX firmware and NCQ programs. Was anxious to try out pbFORTH as an alternative!! Unzipped pbforth111.zip and used RCX Command Center to download pbForth.srec. Progress window looked good UNTIL the (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.pbforth)
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| | Re: opposite of float command for nqc ?
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Thanx. That solved my problem. (...) including a (...) directions (...) drives. (...) used (...) where (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.nqc)
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| | Firmware startup bug?
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Probably related to the garbage on the lcd that you get when turning off the RCX with a sensor active: if there is a light or rotation sensor or a pressed touch sensor connected to the RCX when you download firmware legOS will crash immediately (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.legos)
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| | Re: opposite of float command for nqc ?
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In NCQ & RCX Code, "Off" is the closest one gets to "locking" a motor. It will resist being turned, but in a crane application I can envision enough force to externally turn the shaft. You can prevet this from happening by including a worm gear in (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.nqc)
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| | opposite of float command for nqc ?
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is there a command for ncq the lock a motor in place, sorta opposite to the float command? I have a arm that i have made and it sits sorta like a crane with a motor to rotate it up and down. Problem is i need it to stop at the bottom to pick an (...) (25 years ago, 27-Jan-00, to lugnet.robotics.rcx.nqc)
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