Hello there, I am new to the Arduino so it's a bit of a steep learning curve to start off, considering the last coding I did was in BASIC in about 1984!
I've been reading up and studying a few other similar projects on-line, but they look complicated and I really need a bit of advice to get started. So far I only know a few common commands as I'm working through an instructional book, but I'd like to get started writing a sketch (best way to learn probably) so using the most appropriate commands from the start would be helpful.
To this end, this is what I am trying to accomplish: I have a signal with red, amber and green aspects. The aspect is normally green but when a passing train triggers an IR detector in the track, the aspect changes to red. It stays red for x seconds and then changes to amber for x seconds and then back to green. Now that is pretty easy - in fact I've muddled through a sketch which achieves just that (using if else statements) but relies on the delay command which as I understand it, is not a good approach. Also I have two additional requirements, firstly, a manually operated switch which sets the signal to red and stays on that aspect until the switch is switched back. Secondly should a train pass the signal at amber the aspect needs to change to red again and the sequence restarts.
I would be grateful for some pointers on the approach and commands that I need to use. Many thanks