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admin 28.03.2014

After showing Wallerawang at the 50th Anniversary AMRA exhibition at Liverpool, our group took our customary break before reconvening to work on the signals. View of the resistance soldering iron showing the front panel, carbon tip, footswitch and ground lead. Rear view of the resistance soldering iron, showing the computer power supply, timer circuit, and automotive relay. The single-post lower quadrant signals were constructed as per the kit instructions, with a slight modification to allow wires for 1.8mm warm white LEDs to run down inside the post (the LEDs are also from Gwydir Valley Models and come pre-wired). Please see seperate category listing - Midland Railway Signal Box - to buy individual components. For orders outside the UK please enquire about the cost of delivery before ordering, due to the weight of the kit. This item will be sent through the Global Shipping Programme and includes international tracking. By clicking Confirm bid, you are committing to buy this item from the seller if you are the winning bidder and have read and agree to the Global Shipping Programme terms and conditions - opens in a new window or tab. By clicking 1 Click Bid, you are agreeing to buy this item from the seller if you're the winning bidder.
This next one is made from a credit card and a plastic large tie wrap,and coffee stir stick for the len’s. Or can find a small project from the net to run a bunch of signal’s and have them switch to each color alturnatly. As soon as I can figure out how to put them on my layout without tearing the whole thing apart. Don't go putting me under pressure now, I have Highbridge to attack on the Sunday after I come back. Its a design feature - elf n safety, when the noise sounds get Toto away from the controller.

I'm going to fit anti-slip mat between the motor and mount (top and bottom), may reduce the noise a bit.
Mods from breadboard version, it had two leds - pins D7 & D8, left over from decoder testing, reduced to 1 led D7, which is on while the motor is running. Theres plenty of space on the right hand side for Toto to mission creep (LCD displays etc).
In order to solder some of the trickier parts of the posts together, a resistance soldering iron was made from items mostly found in the scrap box.
The 5V supply rails go through an automotive (12V) relay, controlled by a timer, to the tip.
The black wires go straight to the green ground post on the front panel (an old control panel for a layout), the red 5V wires go to the relay and then onto the carbon tip. Before the introduction of coloured light signals, Wallerawang predominately had lower quadrant semaphores, with one upper quadrant signal at the Sydney end of the Up platform.
Every signal arm has been made so that it can move, and warm white LEDs added to light the spectacle plates. The kit includes 6 standard laser cut white Rowmark panels, MDF internal Structure, clear acrylic glazing strips, self adhesive roofing tiles, steps, walkway and railings plus full instructions. By clicking Confirm bid you commit to buy this item from the seller if you are the winning bidder.
Import charges previously quoted are subject to change if you increase you maximum bid amount. The only down fall is that it takes about 12 hours to print most things, so what I did for my signals was to create a vacuum mold for the vacuum former. Some serious reworks and the electrics to sort out as I have my Power cab and all the necessary gubbins. If it gets too annoying, I will probably have to put sound proofing in the base board - it effectively a sound box.

The iron itself an old pencil soldering iron which had a brass rod inserted at the tip, tapped to suit a Scope carbon element. The double post and upper quadrant signals were built from a combination of kit parts and brass pieces, using available pictures of the real signals and scale drawings as a guideline. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable. I have tried both of these machines at making different things for my(and my dad’s) model railway.
The brass was laid on top of a scale drawing of a post, and held in position with pins while it was soldered together. The brass rod also had a 2mm hole drilled, so that the Scope element can be unscrewed and a 2mm pencil lead inserted, for finer soldering work.
Three signals had already been built and added to the layout, so over the course of many meetings six of the seven remaining signals were put together.
Except for a couple of dummy arms, all semaphores and counterweights have been built to operate.
A footswitch triggers the timer, which controls the time the relay stays on, and therefore the power at the tip.
The time duration is set by the knob on the front panel, and the green LED indicates when power is applied to the tip. A 3.5mm headphone plug and socket connects the footswitch to the timer circuit, which is powered by a 12V rail from the computer power supply.

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