After completing an engineering apprenticeship I ended up specialising in electronics,
firstly Analogue then Digital and spent many years designing digital computer interfaces
so the electrical aspect of my railway presented me no challenges and I incorporated
many philosophies which I practiced during my career. The nice thing about doing
these railway electrics now a days was a lot of the parts that I used then are now
available to me from hobby shops at a very reasonable price.
The point motors have switches on that control the track power dependant upon the
position of the point. The most complicated section to work out the logic was where
I had the platform bay road cross over the outside slip. There were four outputs
to control and outputs were dependant upon the other point.