Thursday, 5 March 2015

Layout Plan - Update

I decided to adjust the plan to make the layout independent when required, but with the option to connect to other layouts. Also The under level can be used to add time to a rail journeys. Unfortunately this addition meant that the width and length had to be increased to a total of 780 mm x 3100 mm.
Ground level
Under level
A double track spiral will be used to connect both levels. The plan is nearly there, I just need to make adjustments, the current under level version was to get track out without thought.

Advantages:
  • Lower level can be used as test track, as it has the loop implemented.
  • Layout can operate on it's own
  • Layout can operate with other layouts
  • Storage cassette loading/unloading of locomotives and rolling stock
  • Full size HST (rake of seven coaches and the two power cars) will fit on the stations main platform. (Based on estimated lengths).
  • Only one double slip used on ground level, due to space restrictions. (might be able to remove it)
Disadvantages:
  • Complexity - needs to be gone over to adjust track work
  • Spiral - will my locomotives be able to handle it under load.
  • Increased layout board size - 
    • width increased by 430 mm
    • length increased by 600 mm
  • Electrical complexity
    • Wye
    • Reversing loops
  • Building the storage cassettes 
  • Cost of points and double slips.

Wednesday, 4 March 2015

Part Way to an N gauge HST

I am part way to an n gauge HST in the Intercity Swallow livery. That is I have purchased three Dapol coaches that are TF, TRSB, and TS.

TF, TRSB, and TS
To complete it I am now waiting on Dapol to release the TGS, a renumbered TS and the HST bookset. The bookset is composed of two DMB, a TF, and a TS.

The fun part with the HST is that formations could be changed, I plan to mainly use the formation DMB-TGS-TS-TS-TS-TRSB-TF-TF-DMB. But I do plan to be able to mix it up a bit by having some extra coaches such as:

  • 1 extra TRSB
  • 2 extra TS
  • 1 extra TF
Which can be stabled at my planned major station layout module of my heritage line. Which will be a long way off, as initially I plan to build a small branch line terminating station layout module.
List of codes and their descriptions.

When I first  saw the HST in a Hornby catalogue in the late 80's, I knew I had to get one. It has been approximately 25 years since, and I plan to have one.

Wikipedia links about the HST:
http://en.wikipedia.org/wiki/British_Rail_Class_252 <-- Prototype
http://en.wikipedia.org/wiki/British_Rail_Classes_253,_254_and_255
http://en.wikipedia.org/wiki/British_Rail_Class_43_(HST)
http://en.wikipedia.org/wiki/British_Rail_Mark_3#HST_vehicles <-- Coaching Stock
http://en.wikipedia.org/wiki/InterCity_125
http://en.wikipedia.org/wiki/British_Rail_corporate_liveries
http://en.wikipedia.org/wiki/InterCity_(British_Rail)

Formations
http://www.rmweb.co.uk/community/index.php?/topic/38178-hst-formations/
http://www.rmweb.co.uk/community/index.php?/topic/18939-hst-formation/
http://www.ngaugeforum.co.uk/SMFN/index.php?topic=2452.0
http://ftp.uktrainsim.com/viewtopic.php?f=143&t=71376&p=855859

Misc links:
http://www.tauntontrains.co.uk/HST.htm

DCC Control Station

A big thank you to Malhar Deshmukh for his comment which helped remind me that I was going to work on the Arduino as a command station.

Unfortunately before now, I was sidetracked by other things such as my layout planning (and it's multiple revisions and restarts), as well as my growing collection of locomotives and coaches.

My original plan was to use an Arduino Uno as a simple dcc control station that can control a few dcc locomotives and devices. In order to do this I will need to make use of:
  • an Arduino Uno (or Arduino compatible)
  • an LCD (I2C interface)
  • a few buttons and LEDs
  • a key pad
  • the software CmdArduino (created by D.E. Goodman-Wilson)
  • a dcc booster (as I am too lazy to build a h-bridge)

As for test equipment, I will be using:

The code for this will be hosted on GitHub and is a fork of the CmdArduino repository which is also hosted on GitHub. The fork of CmdArduino I have made is located at:  https://github.com/dtcole/CmdrArduino


Initial Plan


  1. Setup the code to have the potentiometer set the speed in one direction and instead use two buttons to control the direction.
  2. Attach I2C LCD and insert support code to run it. 
    • Modify CmdStation.ino to display loco information (address, speed, and direction).
  3. Attach keypad, and modify CmdStation.ino to support it, 
    • insert test code to verify keys pressed match what the arduino sees.
  4. Create a menu that allows:
    • the user to add and remove a locomotive (DCC Address, and name). 
    • select a locomotive by name for direct control.  
    • the # button to return to the main menu.
    • the * button to return to the currently selected locomotives information 
I will create a new post once I have the above mentioned working.

Thursday, 12 February 2015

Raspberry Pi 2

Today I received the Raspberry Pi 2 Model B, that I had ordered two days ago.




The Pi will be used to control the SPROG IIv3 by running JMRI. Luckily the latest NOOBS (1.3.12) has the java runtime environment 1.8.0-b132 installed, so I only had to download the latest JMRI production version (3.10.1) for Linux.

JMRI DecoderPro3 running on the Raspberry Pi
Using Putty and Xming on windows to access the Raspberry Pi and run DecoderPro3

Hardware used:
  • Raspberry Pi 2 Model B
  • USB Wifi Adapter
  • SPROG IIv3 with USB lead.
  • Mobile phone (Samsung Galaxy S4) charger and USB lead, as it is already plugged in. Otherwise any USB power supply that can provide 1 amp or higher with a micro USB connector.
Software Used:

Update

I just tried the Pi out with my SPROG via JMRI which had a communications issue which was solved by reading the JMRI users group. The issue is the pi does not like the JMRI armv71 library, the solution is to overwrite it with the armv61 library. The thread to read on the JMRI users group is Raspberry Pi 2 model B - help please.

$ pwd 
/home/pi
$ cd JMRI/lib/linux
$ pwd
/home/pi/JMRI/lib/linux
$ sudo tar -zcvf armv7l.orig.tar.gz armv7l
$ sudo cp -v armv6l/* armv7l/

SPROG IIv3 and Raspberry Pi 2 Model B connected together via USB

Layout planning update

After some consultation with other modellers on the N gauge forums, I have come to the realisation that I should model a heritage railway line. As this will allow me to use equipment from various periods of UK rail history. Like the Dapol HST (Class 43 in Intercity Swallow livery) that I have on order.

I am currently figuring out a history for my heritage line, listed below is a draft of my ideas for the history:
  • It was originally a branch line linking two main lines, and had a junction for another branch line that terminated at a rural community.
  • Was closed down due to the Beeching cuts.
  • Not all of it could be saved, as local governments wanted the land for development purposes.
  • Thus the main facilities and terminus used to be a through station and junction:
    • The junction still exists and so does the branch line that ends at a small rural community.
    • The other part continues onto one of the main lines.
    • The other mainline link is gone, thus the terminus station.

Currently I have three stations to choose from to model, I have listed below a draft of my vision of the three stations:
  • Branch branch line terminus
    • Rural station
    • 1 main platform (4 ~ 6 coaches) with a bay platform (3 coach DMU)
    • turntable to turn locomotives around (including diesel)
    • one or two through sidings - runaround and freight breakdown.
    • small goods shed and cattle dock
  • Branch line terminus (previously a through station)
    • Previously the through station.
    • Three platforms that can handle rakes of 6 coaches
    • One bay platform that can support a DMU of 3 coaches or a steam push pull train consisting of a tank engine and a rake of two coaches.
    • With heritage rail takeover the following was facilities were implemented:
      • coach and locomotive depots
      • steam and diesel refueling facilities
      • DMU stabling yard (including fueling)
      • Automatic carriage cleaner
      • Carriage stabling yard
      • Locomotive storage
      • turntable for turning locomotives around to face correct direction.
      • small freight handling area
      • Food preparation facility and loading bay for kitchen/buffet cars.
  • Branch line meets mainline station
    • one island platform under network rail
    • heritage rail control:
      • one island platform plus two bays in middle of platform which are heritage rail.
      • or one platform plus bay platform, and then one half of a island platform, the other half under network rail control.
      • locomotive water supply at both ends.
      • colour light signals, as track on southern end joins back into the national railway (network rail).
      • In order for points to be set for the heritage rail to access the main line. Network rail via their control system needs to authorise local control of points (station signal box). Once movement is done, the signal box is required to return control to network rail. Network rail can override this but only in a safe manner. (If a train is already occupying the block or is on the points, then the points can't be changed).
      • Track heading south is by default set to head shunt. Alternate path is onto network rail.
      • There is a turntable access via head shunt.
      • There is a draft plan from network rail, to allow heritage rail northbound from platforms access to network rail northbound track. This is to facilitate northbound network rail steam trains, and emergency usage of extra platforms for non electrified equipment.
Of the three ideas, the branch branch line terminus appears to be the easiest, and will most likely to be my first construction project.

Draft plan of the Branch branch line terminus.
Based on measurements from the draft plan shown above, I should be able to fit a HST with a rake of 7 coaches easily on the main platform. Alternately I can fit a rake of 6 coaches for a regular locomotive hauled passenger train. The bay platform can handle a DMU rake of 3 coaches or a push pull fitted passenger train of 1 locomotive and a rake of 2 coaches.



Friday, 16 January 2015

Various Bits and Pieces


  1. I have received my BitScope Micro, and it works quite well. And have now received the dual channel BNC adapter, which will allow me to use my probe. 
  2. I have received a DCC chipped class 08 shunting locomotive from CR Signals.
  3. I have received the SPROG II from DCCconcepts
  4. I have now (09/01/2015) received a Princess Coronation "Duchess of Norfolk" in BR Express Blue (GF 372-186)
I have tested my class 08 locomotive with the SPROG II and they both worked.
Class 08 shunter controlled by JMRI on mac via SPROG.

Class 08 shunter

I am glad that I had ordered the Duchess of Norfolk, she has become the pride of my fleet and will be used with my Stanier coaching stock, which currently makes a rake of three coaches:

  • LMS 50ft Full brake M31319 (GF 374-886)
  • Stanier Brake 1st Coach M5060 (GF 374-831B)
  • Stanier Brake 2nd Coach M5777 (GF 374-826B)

Duchess of Norfolk with a rake of three Stanier coaches (Full Brake, Brake 1st, & Brake 2nd)

I have to get around to ordering some Stanier corridor and vestibule coaches. I do have some BR Mk1 first and second corridor coaches, and will be using them when needed.

I now need to rethink my layout plans, as my branch line idea doesn't justify the use or sighting of a coronation class locomotive. Although it has been suggested by a member of the N Gauge Forum that I could still have the duchess run on my branch in the form of a rail tour before the branch was closed or as a Heritage railway.

I do have two ideas that I would like to implement:
  1. A small to medium sized Mainline terminus with a branch-line connection, this will allow me to have an engine maintenance facility, including a turntable and some coaching stock storage. And possibly a freight handling area. 
  2. A small to medium branch line terminus - a platform that on one side can handle a rake of three to four coaches. And a bay platform on the other that can handle a rake of two coaches plus a tank locomotive, pretty much a push & pull (/motor coach) train. And some freight handling - a goods shed, cattle dock, and couple of sidings.
An example of the branch line terminus idea.
At this point in regards to the terminus idea, I plan to work on the branch line as it should be less complex than my main line.

Saturday, 1 November 2014

Absent

I had to curtail my activities in order to finish off my graduate certificate. I now have some free time to start looking at things again.

Oscillosope


Due to the limitations of the Arduino based Oscilloscope & Logic Analyzer projects I have been looking at, I have decided to purchase a BitScope Micro Oscilloscope & Analyzer, which provides the functionality I require.

Railway Research


I have been collecting books about semaphore signalling (prototypical and modelling) and coaching stock (BR Mk1&2). As well as researching the Pull & Push services run by LMS and then BR, unfortunately there appears to be no ready to run (RTR) coaches available. 

Luckily Dapol currently supplies a RTR N Gauge steam locomotive (2S-015-002) that is Push-Pull fitted, the Ivatt 2-6-2T number 41273 in BR early crest, which unfortunately is not DCC ready. 

According to Wikipedia, RailUKGloucestershire Transport History, the Ivatt Class 2MT 2-6-2T number 41273 was push-pull fitted. Gloucestershire Transport History and Goods & Not So Goods provide suggestions on how to model a generic driving van trailer for push-pull operation using the Graham Farish BR Mk1 57ft Suburban Brake End (374-312B).

Alternately Etched Pixels offers LMS suburban coach kits:

  • UMCL1022:    LMS 57ft non corridor third, pre-printed LMS sides
  • UMCL1023:    LMS 57ft non corridor brake third, pre-printed LMS sides
  • UMCL1023B: LMS 57ft non corridor brake third driving trailer, pre-printed LMS sides
  • UMCL1024:    LMS 57ft non corridor composite, pre-printed LMS sides
  • UM616:           LMS suburban trailer end (driver) (pack of two)

  • Looks like I could do it to the BR Livery for suburban passenger as well:
  • UMCC1023:    LMS 57ft non corridor brake third in BR crimson livery
  • UMCC1024:    LMS 57ft non corridor composite in BR crimson livery

  • I would need to use UM616 to convert UMCC1023 into a driving trailer of a push-pull set, but it is doable.