Pedestrian Crossing

Basic electrical and electronics, such as DC/Analog control.
User avatar
Flashbang
Posts: 3754
Joined: Thu Oct 18, 2007 1:07 pm
Location: SE United Kingdom
Contact:

Re: Pedestrian Crossing

Postby Flashbang » Fri Nov 26, 2010 1:35 pm

JLK2707
You keep popping up asking for different and fairly complex timing / control circuits! You have again changed what you want from your original post in this topic!
To me and I may be wrong, it seems as though you have sudden brain wave idea, but don't understand the 'how to do it' part?
This is a model railway forum NOT an electronics forum!

While several members here could design such a fairly complex timing arrangement that you describe in the post directly above, they are actually very unlikely to do so! Time and the effort taken on doing such a design project isnt practicable for most people.

While the basic NE555 timer will do most of what you need, several working together will be needed (Best to use dual NE555 the NE556) plus some counter ICs.

I would suggest you find (if there is one?) and join an Electronic forum - do a Google search to find any.
Or as you seem capable of understanding electronic circuits and building them, search the internet for 'NE555 circuits' and 'Traffic light circuits'. There are hundreds freely available and then cobble together your own design.
To get you started here is a very simple traffic light circuit using NE555 timer....http://555-timer.clarkson-uk.com/ and basic 555 types of circuits. http://555-timer.clarkson-uk.com/
[Image << Click the Icon to go to my website
Broken? It was working correctly when I left it.

JLK2707
Posts: 141
Joined: Sun Aug 22, 2010 2:26 pm

Re: Pedestrian Crossing

Postby JLK2707 » Wed Dec 08, 2010 7:10 am

Traffic Lights for Level Crossings
by JLK2707 on Thu Dec 02, 2010 2:38 am

I am just wondering if you can help me build this. It is mentioned as the following:

It uses 555 timers and reed switches and magnets. The sequence is mentioned as the following:

No Train Approaching = Off
Train Detected = Yellow for 4 seconds before going to red
Sequence reverts to Off after the train has past

This can be shown as the following:

BUELichtsignal_BRDAnimation02.gif
BUELichtsignal_BRDAnimation02.gif (39.28 KiB) Viewed 754 times

User avatar
stuartp
Posts: 1190
Joined: Sat Feb 28, 2009 7:40 pm

Re: Pedestrian Crossing

Postby stuartp » Wed Dec 08, 2010 2:56 pm

Flashbang wrote:I would suggest you find (if there is one?) and join an Electronic forum - do a Google search to find any.


Here's one for starters - http://www.merg.org.uk/

Here endeth my understanding of electronics but I had heard of this lot.
Portwilliam - Southwest Scotland in the 1960s, in OO - http://stuart1968.wordpress.com/

JLK2707
Posts: 141
Joined: Sun Aug 22, 2010 2:26 pm

Re: Pedestrian Crossing

Postby JLK2707 » Wed Jan 12, 2011 9:35 am

Thank you to all who took the time to answer my questions. :D


Return to “Electrical & Electronics”

Who is online

Users browsing this forum: No registered users and 1 guest