 | | Re: Varying the output voltage?
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(...) The power motors that come with the RIS are very efficient, so the load is very light and speed changes very little. Then of course it depend on your robot, if you use caterpillar tracks you will generally have more load than with wheels. An (...) (21 years ago, 15-Jun-03, to lugnet.robotics.rcx.legos)
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| | Re: Varying the output voltage?
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(...) you're right, I forgot float. Thanks for clearing the rest up for me :-) Doesn't the motor itself have a "load" when it works with no actual load? "which reduces power but not speed" Timothy (21 years ago, 15-Jun-03, to lugnet.robotics.rcx.legos)
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| | Re: OS X Complier problems solved--now struggling with BrickOS
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(...) Hi, First, in terms of my compiler build (referencing your previous post...) what I had a problem with was building the sample C++ code that came with BrickOS. I don't need C++ so I haven't investigated this any further. You're free to try my (...) (21 years ago, 14-Jun-03, to lugnet.robotics.rcx.legos)
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| | Re: Varying the output voltage?
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This is what I noticed, comparing the two systems with BrickOS One thing that I noticed was at the lower voltages the needle on my multimeter wavered around a little and it tended to steady at the higher power levels All of the readings were taken (...) (21 years ago, 14-Jun-03, to lugnet.robotics.rcx.legos)
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| | OS X Complier problems solved--now struggling with BrickOS
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Ok, you can (perhaps--I haven't been able to test it yet) ignore my previous post. I was trying to build the cross compiler using GCC 3.3, and nothing I tried would work. When I switched to 3.2.3, the errors disappeared. So I'm making the temporary (...) (21 years ago, 14-Jun-03, to lugnet.robotics.rcx.legos)
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| | Cross Compiler for the Mac Os X
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Has anyone had any luck creating a cross complier for the Mac? I've downloaded Michael Zapp's, but he said it wasn't working for C++. I've been trying to compile my own, but I keep getting errors. Any suggestions or pointers would be greatly (...) (21 years ago, 14-Jun-03, to lugnet.robotics.rcx.legos)
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| | Re: Varying the output voltage?
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(...) Actually there are four, sort of, as for 0 there are float (contacts separated, infinite resistance) and brake (contacts shorted, zero resistance). The standard firmware switches rapidly between on and float (each cycle takes 8ms), which (...) (21 years ago, 14-Jun-03, to lugnet.robotics.rcx.legos)
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| | Re: Varying the output voltage?
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(...) The eight different power level pulsing is called "PWM", translation=Pulse width modulation. PWM is the way a digital chip cheats/mimics true analog without a D/A convertor. Since the only output of a digital chip is on or off, there is no (...) (21 years ago, 14-Jun-03, to lugnet.robotics.rcx.legos)
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| | Varying the output voltage?
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I was wondering if it was possible to control the speed/torque of the motor by varying the output voltage in brickOS. It seems that the speed parameter on the motors only changes the rate at which they pulse on and off. I am looking for something (...) (21 years ago, 14-Jun-03, to lugnet.robotics.rcx.legos)
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| | Communication between RCX
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Hello there, I've wrote a little library who permit you to communicate with RCX easily All information is in the package (URL) (21 years ago, 13-Jun-03, to lugnet.robotics.rcx.legos)
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| | BrickOS Talking to Robolab?
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Has anyone used BrickOS to talk to Robolab? I really like the Robolab visualization tools and it would be a shame to not be able to fool Robolab into to talking to the BrickOS firmware. I am in the process of designing a simple Fuzzy controller and (...) (21 years ago, 11-Jun-03, to lugnet.robotics.rcx.legos)
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| | Re: DCC for the RCX
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(Sorry, did FUT to .legos, but didn't post to it. I'm such a newbie!) (...) (21 years ago, 10-Jun-03, to lugnet.robotics.rcx.legos)
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| | Re: DCC for the RCX
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(...) That would be ideal, IMHO. It would allow, among other things, LNP to be used for PC to LDCC communication. At IndyLUG, we've been wishing for DCC L-gauge since inception. The word "thanks" simply doesn't cover it, Mark. Congratulations on (...) (21 years ago, 10-Jun-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: BrickFest website?
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(...) Several people have contacted me about running some MindStorms challenges. Only a few have been submitted. (I recently found out that there was a glitch in the Presentation form,:-/ it should be fixed soon. If you have not received an email (...) (21 years ago, 10-Jun-03, to lugnet.events.brickfest, lugnet.robotics.events, lugnet.robotics.rcx)
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| | Re: DCC for the RCX
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Hi Ralph, I should be able to extract the source for the low level driver routines this week. If anyone else is interested, please email me. Note for BrickOS users: it's not simply a matter of plonking the routines into a program. The kernel will (...) (21 years ago, 9-Jun-03, to lugnet.robotics.rcx, lugnet.trains, lugnet.robotics.rcx.legos)
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| | RE: DCC for the RCX
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Mark, would it be possible to share the code of your DCC controller, I am the author of pbForth and would love to add the driver to the pbForth library. I've also got a servo driver in pbForth already. Too bad Hitechnic is out of business. Their (...) (21 years ago, 9-Jun-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) One way is to mount one or more magnets on the underside of the train with their N-S pole oriented across the width of the train (to differentiate it from the couplers of just any old train) and then sense these specially-marked train cars (...) (21 years ago, 9-Jun-03, to lugnet.robotics.rcx, lugnet.trains, FTX)
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| | Re: DCC for the RCX
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(...) LDCC (...) to the (...) to (...) this (...) of (...) index (...) I (...) the (...) Great, Chris, I'm glad it's working for you - and with another brand of decoder, yet! (...) worked (...) mode and (...) parameters. (...) of (...) meanings (...) (21 years ago, 9-Jun-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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I just converted my first engine to DCC yesterday and started playing with LDCC 1.01. LDCC is fantastic! Thank you, Mark! I installed an AD330 N-Scale decoder from Model Rectifier Corp according to the directions on Tom Cook's site. At 0.8 Amps this (...) (21 years ago, 9-Jun-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Robolab upgrade to 2.5.3 and other things
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Hello All, There is a patch of Robolab to 2.5.3. Is called Service_Pack12.1 It is around 4.2 mg in size Follow this URL: (URL) is also a list of bug fixes including; one specific problem that made me consider death on a weekend six months ago. (...) (21 years ago, 8-Jun-03, to lugnet.robotics, lugnet.edu, lugnet.robotics.rcx.robolab, lugnet.robotics.edu)
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