Search found 120 matches

by minipix
Sat Jul 25, 2020 8:53 am
Forum: Personal Layouts - Under Construction
Topic: Frontington & Backwoods Railway
Replies: 97
Views: 9165

Re: Frontington & Backwoods Railway

My replacement 1366 arrived yesterday! It's a lot better than the previous one. Still a little hesitant at low speeds, but it looks more promising that that will sort itself out with a little more wearing in. I do notice that the wheels have little to no vertical movement - most other locos I own ha...
by minipix
Thu Jul 23, 2020 3:47 pm
Forum: Track/Layout Design
Topic: Single line branching from double
Replies: 5
Views: 216

Re: Single line branching from double

Actually reminds me of my nearest station, which is Castle Cary. The main double main line splits off to a branch line. No double/single slips, just normal points.

https://www.google.com/maps/@51.0988418 ... 333,16.83z

http://raildar.co.uk/map/CLC
by minipix
Sun Jul 19, 2020 9:01 am
Forum: Personal Layouts - Under Construction
Topic: Frontington & Backwoods Railway
Replies: 97
Views: 9165

Re: Frontington & Backwoods Railway

Following on from my last post, here are a few photos of what I had been doing with Sharpies. The detail on the coaches doesn't really come out very well on camera, there isn't actually much contrast between the cream paintwork and the brass details. On the Terrier, you can see that I've put some go...
by minipix
Thu Jul 16, 2020 8:51 am
Forum: Personal Layouts - Under Construction
Topic: Frontington & Backwoods Railway
Replies: 97
Views: 9165

Re: Frontington & Backwoods Railway

Just a couple of layout updates to share today. I spent a few minutes colouring in my three coaches with some Sharpies. Yes, I know that's not exactly the sort of thing you tend to hear from modellers! My coaches are ~30 year old Lima models, not really up to today's standards, no flush window glass...
by minipix
Mon Jun 15, 2020 3:20 pm
Forum: Personal Layouts - Under Construction
Topic: Frontington & Backwoods Railway
Replies: 97
Views: 9165

Re: Frontington & Backwoods Railway

Hi all, time for another long-overdue layout update. The biggest piece of work has been rewiring the lighting. I had experimented with using an Arduino to act as a Bluetooth-enabled DC controller, but the performance wasn't great, so I abandoned that project, and came up with a different plan for th...
by minipix
Mon Apr 20, 2020 9:03 pm
Forum: Electronics
Topic: Charlieplexing - Arduino controlling multiple LEDs
Replies: 2
Views: 240

Re: Charlieplexing - Arduino controlling multiple LEDs

Absolutely right. As it happens I bought a pack of LEDs a while back that had resistors already attached, so I'm using those. Otherwise, yes you'd have to rely on the LEDs being "equal".

I'm still trying to work out how to sensibly draw out a circuit diagram to put up here. Any suggestions?
by minipix
Fri Apr 17, 2020 11:41 am
Forum: Electronics
Topic: Charlieplexing - Arduino controlling multiple LEDs
Replies: 2
Views: 240

Charlieplexing - Arduino controlling multiple LEDs

After my Arduino-based DC controller was shelved, I've found an alternative use for my tiny Arduino Nano - controlling the lights around my layout. The Arduino only has a certain number of digital pins, but thanks to a concept called Charlieplexing we can get around that. The end result I'm aiming f...
by minipix
Thu Apr 02, 2020 5:07 pm
Forum: Scenery
Topic: Argh!! Mould!!
Replies: 2
Views: 278

Argh!! Mould!!

It's been a couple of weeks since I was last able to get out to the layout, and last night I noticed something a little worrying - one of my bushes was covered in mould. IMG_20200401_212945411.jpg Not sure how well you can see it in the photo, but the mould has completely taken over that bush and in...
by minipix
Tue Mar 24, 2020 3:05 pm
Forum: Electronics
Topic: Arduino Bluetooth DC controller
Replies: 8
Views: 657

Re: Arduino Bluetooth DC controller

Just a quick update to say that I have reluctantly shelved this project for now. While the slow speed was lovely, I just couldn't live with the speeding up and slowing down as the loco came across hills and curves. My meagre skills sadly don't extend as far as calculating BEMF or indeed using any ot...
by minipix
Fri Mar 13, 2020 1:11 pm
Forum: New discoveries???
Topic: Fast clock for running to a timetable
Replies: 26
Views: 3517

Re: Fast clock for running to a timetable

Wow. I wasn't expecting people to get so hot under the collar about this! It's clearly a topic that is important to some people, so I'm glad the discussion is happening. I think where I started with this idea was to somehow represent the passing of a complete 'day', with different things happening a...
by minipix
Wed Mar 11, 2020 3:49 pm
Forum: Electronics
Topic: Arduino Bluetooth DC controller
Replies: 8
Views: 657

Re: Arduino Bluetooth DC controller

Thanks for the words of wisdom, flashbang! Interesting what you say about a short producing a high current, especially since I just bought an ACS712 current sensor. Is that the sort of thing that is used in DCC I wonder? I was planning on using it to measure the motor load, but perhaps I can also us...
by minipix
Tue Mar 10, 2020 1:11 pm
Forum: Electronics
Topic: Arduino Bluetooth DC controller
Replies: 8
Views: 657

Re: Arduino Bluetooth DC controller

In other news, I've just ordered an ACS712 Current Sensor, which I can connect to the Arduino to measure the current on the track power. The idea, if I've understood the concept properly, is that this will show me the load the motor is under, by detecting changes in the actual current. I should be a...
by minipix
Tue Mar 10, 2020 1:07 pm
Forum: Electronics
Topic: Arduino Bluetooth DC controller
Replies: 8
Views: 657

Re: Arduino Bluetooth DC controller

That is an excellent question. To which I do not know the answer. I'll be honest, I've not given that any thought whatsoever so far, mainly because I don't remember ever having had any short circuits on my layout - at least not that I've known about. Certainly nothing has blown up while I've been te...
by minipix
Sat Mar 07, 2020 7:57 pm
Forum: Electronics
Topic: Arduino Bluetooth DC controller
Replies: 8
Views: 657

Re: Arduino Bluetooth DC controller

I've just created a short video showing this setup in action.

https://youtu.be/arn2xkmo3ho
by minipix
Sat Mar 07, 2020 4:07 pm
Forum: Electronics
Topic: Arduino Bluetooth DC controller
Replies: 8
Views: 657

Arduino Bluetooth DC controller

I recently came across the concept of using an Arduino as a DC railway controller. And seeing as Arduino's are stupidly cheap, and I like doing a little programming, I thought I'd give it a go myself! After some considerable research, I ended up with something that works (just about - I'll get to th...

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