Thanks for all your kind words.
Brian, yes that is at Southall just poking out the front of the shed!
In regards to the indexed sector plate. It's been a bit of a long winded affair and a fairly sizeable stumbling point up until recently as I'm a big believer of making sure everything is wired and runs correctly before progressing with scenery, something drummed into be from a young age!
I indexed and motorised it because back when I started "Easton Mill" I was still living at home, the layout sat in a "culvert" in my bedroom so there was no real way of accessing the rear of the layout, now I've got my own place and it's set up in the spare/model room it's not so much of an issue.
I originally set about designing it with the help of a chap named Dave Instone who was well involved with Arduino and MERG. Between us we came up with a list of parts and things to get the ball rolling, however due to work and other interests at the time the layout went on the back burner as these things do from time to time and by the time I got back into in the early part of 2021 Dave had sadly passed away.
I'm not a great under-stander of Arduino and how it all works, so this left me in a bit of a tight spot. Luckily I stumbled across a thread on RMweb, by Tender (Ray) who was trying/had achieved a similar sort of mechanism:
A New Year, a New Layout - 7mm+ modelling - RMweb which I think had come from another thread which focused more on turntables:
DCC Controlled (PECO) Turntable Project using a Arduino Uno - Page 28 - DCC Discussion Topics (not questions) - RMweb
After a few discussions with Ray, he pointed me in the direction of Ian @ DCC Interface and one of his turntable/traverser accessory decoders:
Model Railway DCC Turntable/Traverse Accessory Decoder with TMC2208 - Assembled | DCC Interfaces
Ian was initially very helpful, quickly dispatched the decoder and got me off the ground with the project again, however as time went on he struggled to help me with the program/software I required to make my sector plate work. Fast forward a bit and after a few more rather in depth conversations with Tender (Ray), he designed and sent me a program which after several tweaks is now what I'm running on the DCC Interface Decoder.
I can move the traverser using Macros on the NCE Powercab (Essentially like driving point motors) or I can activate the position required from the 3 push buttons on the control panel which you should be able to make out from my last posting, this required a slight modification/addition the the standard DCC interface board.
So in a nut shell, the main drive is from one of these:
100mm Long Stage Actuator Linear Stage 1204 Ball Screw Linear Slide Stroke With 42mm Stepper Motor
There is a nut an bolt assembly that passes through the end of the sector plate which connects the sector plate to the ball screw slide assembly. On the main drive block there is some bent and shaped aluminium which forms a guide for the nut and bolt assembly to pass through and also activates a micro-switch which is mounted to the bottom of the ball screw slide assembly. In the initial design I was going to use a micro-switch for each position, however there is now only one micro-switch on the slide assembly which lines up with the loop road (Position 1). When powered up, the sector plate moves at half speed until it activates the micro-switch which acts as the datum point for the software. From this, the required steps for the stepper motor that drives the assembly are then programmed into the Arduino Nano via. the Arduino software which is mounted on/forms part of the DCC Interface Decorder. This forms three positions within the software which are then actioned when you push the associated push buttons or accessory number on the Powercab.
Hope this explains things.....If you want to know anymore please let me know.
A diagram and few pictures which will also hopefully aide to my description above!