Search found 206 matches

by Gordon H
Thu Mar 07, 2019 7:09 pm
Forum: Electronics
Topic: Signal control switches
Replies: 13
Views: 507

Re: Signal control switches

Bufferstop wrote:There's one disadvantage to using levers, no matter which position the levers are in the signals will always start where they were even if the levers moved when there was no power on. Someone was working on a board to fix this it may have been MERG.

Yes, available to members as Kit No. 470.
by Gordon H
Mon Feb 11, 2019 12:34 pm
Forum: Exhibitions and Events
Topic: What's happened to the East Midlands Exhibition in Nottingham?
Replies: 2
Views: 126

Re: What's happened to the East Midlands Exhibition in Nottingham?

Here is a copy of the statement made by the current Exhibition Manager some time ago on another forum: "As we all know, the hobby is going through changes and these affect trade exhibitors in particular. Nottingham MRS have run the Nottingham East Midlands Model Railway Exhibition for over 30 y...
by Gordon H
Sat Feb 09, 2019 5:45 pm
Forum: Dapol
Topic: Dapol semaphore signals
Replies: 29
Views: 2704

Re: Dapol semaphore signals

There must be a reason for them designing it the way they have, but I can't see it. My suspicion all along is that they (Dapol) had very little to do with the detailed design. They probably provided a vague, improperly specified drawing on a piece of paper and gave it to someone in China who produc...
by Gordon H
Tue Jan 15, 2019 4:46 pm
Forum: Electronics
Topic: 5volt to 12volt converter
Replies: 20
Views: 595

Re: 5volt to 12volt converter

How much are they As long as you don't need more than about 1 Amp you could build one yourself with a 99p buck converter found on the likes of eBay, I built a couple myself for powering cameras on location, they were turned down to 7.4v but IIRC the buck converters could boost to 24v being fully ad...
by Gordon H
Tue Dec 11, 2018 12:35 pm
Forum: Electronics
Topic: Advice Regarding an Automatic Reversing Component
Replies: 12
Views: 533

Re: Advice Regarding an Automatic Reversing Component

Have a look at the MERG ATC System:
https://www.merg.org.uk/merg_resources/atc.php
It can do exactly what you require as a built-in feature.
No under-track sensors or microswitches either, just wires to the track sections.
by Gordon H
Mon Dec 03, 2018 12:52 pm
Forum: Personal Layouts - Planning
Topic: New Layout Ideas - Carstairs Inspired Layout
Replies: 24
Views: 1379

Re: New Layout Ideas - Carstairs Inspired Layout

One of the main points of interest in operations at Carstairs was/is the splitting and combining of Glasgow and Edinburgh sections of trains. To do the southbound combining you might want to consider extending the Up Loop line to allow room for the Edinburgh loco and coaches before they back on to t...
by Gordon H
Sat Dec 01, 2018 1:01 pm
Forum: Personal Layouts - Planning
Topic: New Layout Ideas - Carstairs Inspired Layout
Replies: 24
Views: 1379

Re: New Layout Ideas - Carstairs Inspired Layout

The layout was originally conceived and built by the Riverside Railway Society, our club, which was based at Tilbury Riverside above the BRSA club in the station building (before it closed). After the station closure the layout was adopted by the Nottingham club, as by then one of our members had mo...
by Gordon H
Fri Nov 30, 2018 4:17 pm
Forum: Personal Layouts - Planning
Topic: New Layout Ideas - Carstairs Inspired Layout
Replies: 24
Views: 1379

Re: New Layout Ideas - Carstairs Inspired Layout

You might like to see the complete track plan of the original Nottingham/RRS Carstairs layout. This is derived from the individual paper sheets produced by hand for each baseboard, and combined into a single image - long before it was possible to do it with any readily available CAD package. The lay...
by Gordon H
Wed Nov 07, 2018 12:58 pm
Forum: Electronics
Topic: Aruino RS485 point control
Replies: 3
Views: 422

Re: Aruino RS485 point control

Not specifically for servos, and certainly not using Arduinos, but RS485 has been used in model railways for many years. Lenz XBus (now Expressnet) is an obvious example. One of the main considerations for point operation will be the number of RS485 receivers you can connect together in the network....
by Gordon H
Sat Oct 20, 2018 2:37 pm
Forum: Items Wanted
Topic: Track
Replies: 5
Views: 238

Re: Track

crazypotter wrote:Sorted now. Big thumbs up to the responders!.

So long as the responders are thinking in the same scale as you - I saw no mention of what scale was being asked for.
by Gordon H
Fri Oct 12, 2018 2:03 pm
Forum: Electronics
Topic: Looking at electronic componants
Replies: 23
Views: 844

Re: Looking at electronic componants

In the London area there is Cricklewood Electronics.
https://www.cricklewoodelectronics.com/
by Gordon H
Wed May 30, 2018 12:34 pm
Forum: General Model Railway Discussion / News
Topic: Cable
Replies: 7
Views: 376

Re: Cable

b308 wrote:Just make sure you use multi core wire, not single core. Single core can easily break and is a sod to repair, it's just not worth the hassle when the other stuff is about the same price (or free).

You mean multistrand, not multicore - which has a different meaning entirely.
by Gordon H
Tue May 08, 2018 12:44 pm
Forum: Electronics
Topic: ARDUINO PROGRAMMING, AND INTERFACING HELP
Replies: 97
Views: 3973

Re: ARDUINO PROGRAMMING, AND INTERFACING HELP

Not being very good at compiling an Arduino sketch, I spent ages to try and find a sketch on-line, even the Arduino site itself. I only wanted to operate two crossing gates via two press buttons. i.e open, closed. Never found any solution or simple help, just experts keeping the ''secrets'' to them...
by Gordon H
Sat Feb 24, 2018 7:30 pm
Forum: Electronics
Topic: Wire size.
Replies: 10
Views: 674

Re: Wire size.

In the US, the recommended colours for your DCC bus are red and black. Why? Because these are the colours used for mains wiring there... Don't think so. Black is live, and white (or grey) is neutral on single phase installations, which are what most people would encounter. Red is only used as the s...
by Gordon H
Fri Feb 23, 2018 3:30 pm
Forum: Electronics
Topic: Wire size.
Replies: 10
Views: 674

Re: Wire size.

Wire current ratings are not just about the absolute maximum current a wire will conduct before melting. Generally, the quoted rating for a conductor is the current which will produce a temperature rise in that conductor which is in the acceptable range of the insulation material it is coated with. ...

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