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Crosland

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  1. It's dropped the wrong way Just over 2V is typical for a red or green LED more like 3 - 3.5V for a blue or white. The real thing to remember is that LEDs do not behave like resistors and you cannot use ohms law to calculate current form voltage or vice-versa.
  2. You only do up the screws once, when the layout is built. After that they are pluggable. That's why they are more expensive.
  3. Yes, and a lot of high reliability electronics is built with wire-wrap. But these are built by people who know what they are doing, not a grease monkey in a back street garage who will just pick a connector he likes the colour of and use it regardless .
  4. Nice line of sight link Probably not as bad as you think, based on my experience in a house that was all solid walls. We had to use ethrnet over the mains to get to some of the bedrooms.
  5. It's also (if not primarily) the current surges on each pulse that are the problem, especially when starting or at slow speed when there is little or no Back EMF. High frequency pulses are smoothed out by the motor's inductance and look more like DC, at a much lower voltage.
  6. You can remap functions so that the common features are always on the same function across your fleet.
  7. Who makes the Hattons decoder? Serious question, but I know (or very strongly suspect) that DCC concepts supply other brands besides their own. If you can try it with a better DC controller, one that you know produces smooth DC. You could even try a 9V battery. Get it working on DC or return it if it can't be made to do so. Then try the Hattons decoder and another decoder to compare.
  8. There are other unlicensed bands that can be used for radio but they would require more of a home-brew solution. As soon as word get out the same problem could/would occur. This problem was predicted when DCC radio throttles first appeared but most users seemed to bury their heads in the sand and assume only a relatively few exhibition layouts would use them. It's like the old R/C flying systems with the little coloured pennant on the aerial to show what frequency you were using. Once all the colours were used up... The difference being that, to get the data rate up, more recent WiFi spreads the signal across multiple channels so there are fewer channels than would seem on the face of it. One worrying take away from my day job was that factory automation suppliers are pushing WiFi (probably because they can), claiming to have cracked the real-time and security issues. I wonder if there would be a way to setup VPNs for each layout using common infrastructure in the exhibition venue, rather than each layout having it's own access point?
  9. I've never come across an Android 'phone where bluetooth or hotspot were on by default. Maybe some dodgy app is turning them on.
  10. If you can program, etc., while the loco is at rest, and assuming this is on a programming track, not on the main, but it cuts out when running then it is most likely an (electro-)mechanical problem. The motor is energised briefly during programming and any shorts should be detected by the system. Does the decoder itself cutout or does it just lose contact with the track? Try a little downward pressure whilst running slowly. What sort of pickups do you have from the live chassis and the insulated wheels? Are the insulated wheels causing a short, e.g., bogie or pony truck wheels touching chassis, valve gear shorting insulated wheels to chassis, driving wheels touching brake rigging? The motor casing may be connected to one of the brushes and the wire around the motor could be an issue but, if it's causing a short, programming should fail. Have good poke around with a continuity tester and verify the motor brush connections really are completely isolated.
  11. There's the quote again. It has ABSOLUTELY NOTHING to do with short circuits. All I said was that normal DC wiring will be adequate for the continuous booster current, UNDER NORMAL OPERATION. Again, nothing to do with short circuits. I DID NOT say anything to refute your statements about testing the short detection. You can have the last word, Just don't twist my words to fit your own agenda.
  12. I've seen it done, for exactly the kind of reasons you mention Large-ish setrack layout with a single power clip feed.
  13. Please RE-READ what I WROTE, and the CONTEXT that I quoted. It's BECAUSE each section is independent that they will NEVER, UNDER NORMAL OPERATION, see the full sustained booster current. There will simply never be enough locos in ONE section to draw the full booster current. DC style section wiring to each section WILL be adequate. I NEVER questioned the need for a short test in each section. If that fails THEN upgrade the wiring to that section.
  14. He wants to start out by building the layout for DC. That implies lots of sections with individual feeds. When all the section switches are set to ON and connected to the DCC boster there will be multiple parallel feeds to the layout. Under normal operation, no individual section wiring will ever draw the full continuous current that he booster can supply. Planty of layouts have been successfully converted this way. If starting from scratch, going directly to DCC, then things would be different.
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