Create project Need help?
Show more (3)

A traffic-light system for the modell-railroad

Status: Proposal
April 1, 2017, Latest update: April 12, 2017
It all started when someone asked me to build the electronics for the traffic lights on his model railroad. Sure, a simple task for Arduino. Just add a shield, eventually on a prototype board, and off you go... But wait, some 15 years ago I found on the Internet a nice and simple PLC (Programmable Logic Controller) using a PIC16C84 and a few electronic parts. This thing was simply programmed using a compiler for ladder-diagrams. And even if you think Arduino is too much hankypanky you should be able to construct ladder-diagrams, because they look like a schematic diagram using relais. Now my decision was taken quickly: I will construct a simple PLC-like board which will execute the output of the ladder-compiler using a microcontroller of the PIC family.
Read the full post
Show less


The printed circuit board
The schematic diagram
Connection diagram of the board
prototype of the traffic lights
Compleet prototype
Loading comments...