 | | You must see LEGOTIC new LEGO site
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Just go and see my new robotic site !!!!!construction/pn...lectronic. (URL) (21 years ago, 1-Jun-03, to lugnet.robotics.rcx)
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| | Re: Communicating between two RCX'es with cable
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Hi, (...) Because I want the IR ports free to use along with proximity sensors. (...) Well, if it is not too much to ask... :-) But nevertheless, LejOS should support some low level output handling on A-C before I could use it... Regards, Martin (21 years ago, 1-Jun-03, to lugnet.robotics.rcx.java)
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(...) Why do you want to communicate with a cable when you can use IR transmission ? I think this IR transmission very easy to use and in this case you could use 6 sensors and 6 motors together. May be the use of LejOS is the reason....(I don' t (...) (21 years ago, 31-May-03, to lugnet.robotics.rcx.java)
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| | Re: DCC for the RCX
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In lugnet.robotics.rcx, Mark Riley wrote: <snip> (...) This is what I did to make it work for me... All my microcontrollers out of the bag were on "loco 3"--that is when I used the remote, all 3 motors worked when I used the C up/down and 3 button (...) (21 years ago, 31-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) I thought that the little doohickey that goes across the motor inputs on the electric motor in the housing was a diode--don't quite remember where i picked up that idea, but a 'noise reducing' thing makes more sense. Anyway, i'll go get a (...) (21 years ago, 31-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) When you say LEGO diodes, are you sure you aren't referring to the thermistor that some DCC mods have you remove? Maybe I'm confused of course... whose conversion instructions did you follow? (21 years ago, 31-May-03, to lugnet.robotics.rcx, lugnet.trains)
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(...) have a (...) diodes (at (...) I think those are probably some sort of noise suppression device, not diodes. At least they don't "diode" when I hook'em to my meter. Another clue is there's no band on one end. Could be one of those "free to good (...) (21 years ago, 31-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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Hi Dryden, DCC sends information to the decoders by flipping the polarity of the power supply in a specific timing sequence. So, it's not like the X-10 protocol. To get more power to run more locomotives, you need something called a DCC booster. The (...) (21 years ago, 31-May-03, to lugnet.robotics.rcx, lugnet.trains)
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| | Re: DCC for the RCX
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(...) Got the programming part--all motors on differnt Loco #'s--figured it out. I wouldn't mind building that Ack circuit though, so any advice on using hte LEGO diodes would be helpful. I'm having a great time--and by the way, as mentioned on the (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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(...) Hey Mark, I posted earlier in a new thread praising the greatness of this, but I have a few additional questions that I thought I'd just ad to this thread-- I converted 3 LEGO motors with the micro-controller, and now have 3 diodes (at least, (...) (21 years ago, 30-May-03, to lugnet.robotics.rcx, lugnet.trains)
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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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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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