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(...) hmm, color codes and being color blind dont really match well indeed... as far as electronic components go, I'm just a hobbyist. My day job is programming ;) Esger (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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In lugnet.robotics.rcx, Esger Abbink wrote: <snip> (...) Perfectly understood. Thanks! My problem has always been that I wanted to get into electronics, but all those resistors 'n such used to have all these coloured stipes to denote the different (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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i have a question concerning how the DCC signal is sent Is it just sort of a "rider" on top of the power similar to X-10 home automation signals? If so could not the RCX be protected with diodes and used in conjunction with a standard train (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) put in (...) Thanks, Larry, and thanks to all who posted or emailed. (...) one (...) Or is (...) It's important that the motor outputs share the load as evenly as possible. A stalled train motor can draw as much as 750ma, while a single motor (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Communicating between two RCX'es with cable
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Hi there, Long time, no see - I've finally managed to dig out my Lego once again... First of all; I'm very pleased to see the outcome of LejOS 2.x - with Proximity, LLC, integration of rcxcomm, etc. Now, I was wondering if it would be possible (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx.java)
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| | Re: DCC for the RCX
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(...) I forget if I already replied with how nifty this is. I spotlighted it, I put in a news article at ILTCO (we're having some domain problems right now, a temporary url is iltco.northcomp.com) and I added it to the .trains header That ought to (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) Hi Dave, no you wouldnt need any resistors or diodes. Esger (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) Sorry, my earlier post should have been more clear. I was just commenting on the fact that in general a resistor is _not_ a good way to reduce voltage to a train motor. And you recalled correctly: diode's are "one-way". Thats why you need to (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) The problem with inductive load is that when current is interrupted, they generate large voltage spikes with reverse polarity. The diode absorbs these spikes and avoids destroying the driver... Philo (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) I'm no electronics engineer by any stretch-- A diode, iirc, allows DC current to 'flow thru' in only one direction. What would a diode do across the output on the top of the train motor? And why would one be good for 'inductive' loads such as (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) I don't install them either, and I have done something like 30 motors so far. (...) True, but ONLY if you are just going to use the RCX as a output. You can dial the voltage that DB100's (and most other Digitrax) boosters put out to a exact (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: need help for MLCAD:"add new piece to library"
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(...) Chris, I thought that pneumatics parts had made it into the official parts release. When was the last time you updated your parts? I've been known to use parts from here: (URL) I prefer the parts made by JP Brown. You can get them off my (...) (21 years ago, 29-May-03, to lugnet.robotics.rcx)
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| | Re: DCC for the RCX
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(...) output? Dave, I used a 1N4002. It's a fairly common 1 amp switching diode. Here's a picture from my latest decoder install: (URL) that the banded end of the diode gets the blue lead from the decoder. The unbanded end gets the white lead. If (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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In lugnet.robotics.rcx, Mark Riley wrote: <snip> (...) Mucho appreciated Mark. The Diode--any diode will do? and just solder it across the connector output? Take care, Dave (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) I (...) resistors (...) goes (...) run (...) the (...) isn't (...) reduce the (...) David, When I installed my first decoders (Digitrax DN121), I omitted the capacitors, figuring if the buzzing was annoying, I could always add them later. As (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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<snip> (...) Hey Esger I'm not an electronic specialist by any stretch of the imagination (though not by lack of trying) But commercially available DCC controllers and stuff mostly run at 12 volts (from the research I read), but the RCX runs at 9 (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) As I run 12v stuff I dont know the 9v motor good enough to comment on the capacitors but I dont think it's that good an idea to use a resistor to drop the voltage. Use one or more (zener)diode's instead. Esger (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: Remote control under linux
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(...) I'm not sure I understand the question. Are you saying that you want Program #1 to start when you press button P1 and stop running when you release the button? This isn't how the remote works, but you could just have your program send the Stop (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx, FTX)
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| | need help for MLCAD:"add new piece to library"
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Hi everybody, there are missing parts in my MLCAD library.For example I do not have small pneumatic cylinder or pneumatic switch. how can I get on? do I have to create my own custom part or is there any optional free library.If I create my own piece (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx)
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| | Re: DCC for the RCX
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(...) Oh My Goodness! This is what I've been waiting for--when I priced out DCC controllers, they were 200+ CDN... If I can get one of my many RCX's to do it, well that's entirely another matter. When I originally did the research and found the cost (...) (21 years ago, 28-May-03, to lugnet.robotics.rcx, lugnet.trains)
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