Monday, 26 August 2013
I've continued with DCC and used NCE components from Coastal DCC. In this case the control box consists of the standard connector panel with an EB1 short circuit protection board and a mini panel.
I wanted to simplify the control of the points away from switches or buttons for each point and make use of what would traditionally be done by a diode matrix. In this case the mini panel takes up to 30 inputs and you program it to drive whatever accessories or macros you want. In this case it took me about 10 minutes to program the 7 switches.
I've still got a couple of points that are not switching the frogs reliably. I've not had this problem before but for some reason I'm not getting enough throw on the seep point motors to allow the sliding switch to make reliable contact. I've even had a point motor collapse on me, something that has never happened before.
It's quite expensive to have this electronics, probably £100 as opposed to £10 for a diode matrix but this is re-programmable and so mistakes are easily rectified.
All in all this probably took around 4 hours of the bank holiday weekend, not a bad few hours work. However, now it's back to work, plus a holiday, plus trying to move house means blog posts are likely to be even less frequent than ususal.
For reference, all the documents for the NCE components are available as pdfs on their website so I keep copies of them in Evernote on my Nexus tablet. It's a great way to carry all your documents with you when out and about.
Saturday, 10 August 2013
- removed all the scenery
- upgraded the legs to a quick release system I devised
- expanded the front of the layout to have a harbour
- laid nearly all he track
- wired up the track
- run a train
The next stage is to wire the points in so I can confirm that all the trackwork is properly live and there are no dodgy places that will let me down in 2 years time. This is where the time needs to be spent to create a quality foundation.
Saturday, 3 August 2013
- Shops across the middle
- Industry at the sides
- Land rising to each side so buildings have to rise with it
Saturday, 30 March 2013
It's day 1 of York show. I'm up here with Tony and Richard and we're operating Clydach. It was a trek getting here. Due to the knock on effects of several accidents our 3 hour journey yesterday became 5.5 hours.
Still, the layout went together quickly and is running well. As the picture shows, the public arr enjoying it and 3 or 4 deep is par for the course.
Sunday, 30 December 2012
Firstly I twisted lengths of wire together. Technically you only need to do this for long runs but I decided it would be beneficial on tracing faults to have teh wires woven together. With Jill's help we were able to wind together 15ft of wire at a time using the Dremel. I then soldered on 30 individual wires to the different sections and it looks like this.
The pair of wires that feeds a section I want to detect in is fed through a DBD22. The AIU is in place to take the output from the detector. The other piece of electronics is the UTP panel. The other board looks identical.
I then connected up the NCE station and it worked first time. The mainline points are very smooth. There was no jumping and despite not yet having wired the frogs the engines ran well.
Unfortunately I then shorted the layout and it all stopped. Most has come back to life but not everything. I suspect I may have damaged a decoder or I just don't know how to use the new equipment. The basics are definitely right. Now I need to go back to Kevin at CoastalDCC and purchase some short circuit protection.
Thursday, 27 December 2012
Here is the block diagram for the new layout.
It's really simple - honest! The pieces are:
- NCE PH-Pro - the main controller of the layout. This is the heart of DCC.
- The handset (T shaped piece bottom left)
- Programming track (prog) for programming engines
- Track - which gets broken down into 3 districts each with their own short circuit protection
- UTP panel - central point for connecting the cab bus
- NCE AIU - auxiliary input unit for taking in random inputs - there will be 2 of these
- DBD22 - detects occupancy of a section of track - there will either be 3 or 6 of these
- Lenz LS150 - point controllers, there will be 2 of these
- Computer - any old laptop that can run JMRI
- USB to Serial converter - most DCC systems have serial connectors. Most laptops don't :-(
Wednesday, 26 December 2012
- Exhibitable - it would be good to be properly on the exhibition circuit
- Able to be left up at home
- A town scene where the trains go between the buildings as on the Welshpool and Llanfair Railway
- A continuous run - it is nice to just watch trains occasionally
- Computer controlled