similar question
I have a similar project I'm working on, and would like some advice. I'm trying not to use any complex electronics if necessary.
My quiz board will have a column of questions on the left, with corresponding contacts along side. To the right are 2 multiple choice answers, "a" and "b", each with a corresponding contact. There are 2 lamps, green for "correct", and red for "incorrect". I would like to have 2 wires with probes to do the following: Place the first probe on a question on the left column, and the 2nd probe on either of the multiple choices to the right, on that same line. The lamps light up, either green or red for correct or incorrect.
I need the answer lights to light up only if the PROPER QUESTION is selected at the left. I have tried to come up with a diagram for this, but I have only been able to work it out where the left contacts are all jumped together, and therefore, if ANY of the questions selected, then the answer lamps will also light up when selected. I might as well not have the left probe at all.
I can wire it with the 2 probes and only one lamp, which only lights up if the correct answer is selected. And I can wire it with 2 lamps, but only 1 probe, to use for selecting the answer, "a" or "b". But I can't wire it to select both the individual question and the corresponding answer, using the 2 lamps.
I'm also not interested in using toggle switches or the master switch as used in the diagram above in this thread. And the questions and answers must be in the same line, not chosen from a column of answers( e.g. question #1 and answer #4).
What am I missing here? Thanx.