I am trying to locate a construction project called "LED's and Ladders which was published in one of the well known Australian electronics magazines in the 1970's, or late 1960's probably in Electronics Today (ET), later known as Electronics Today International (ETI), but there is a possibility that it may have been in Radio Television and Hobbies (RTV&H), which was later renamed Electronics Australia
The concept of the project is the same as another puzzle called Stairway to Heaven. It consists of a column of LED's, none of which are illuminated at the start, but by pressing a push button switch at the appropriate time, additional LED's can be illuminated. If the button is pressed at the wrong time, some of the LED's which are illuminated will be extinguished. The object of the puzzle is to get all of the LED's illuminated
Between 1974 and 1979 I taught electronics in a Victorian secondary school, and some of my students made one of them in class, indicating that it was published before 1979. I am interested in making one of these but using my own design based on a PIC microcontroller, and my interest in the magazine is solely for the excellent artwork for the front panel.
I am not interested in the later version with different electronics, and inferior front panel artwork, published in RTV&H/ Electronics Australia in August 1980. This date is outside the relevant time scale hence it cannot be the one of interest.
I would be grateful if someone could provide information as to which magazine and which issue it was published in, or if they have the magazine could they please scan and email me a copy of the front panel artwork to snipped-for-privacy@dcsi.net.au