Dear All,
Firstly, I am not an electronics expert, so please forgive any stupidity on my behalf. However, I am trying to create a large scale interactive display of what logic gates do.
For example, I wish to make an AND gate with rope lights representing the lines for input and output, and when the inputs are activated using buttons the output rope light will be lit.
I plan to repeat this process for a range of logic gates (AND, NAND, OR, NOR, XOR, XNOR, NOT). Basically the physical version will look a lot like this
http://www.neuroproductions.be/logic-lab/ in their logic gate example at the bottom of the page.
So far, I have a plan of purchasing an Arduino Uno and a MUX Shield. I would then connect each switch to the to MUX shield in a row of inputs (about 16 in total). I would then use a MOSFET to control each of the lights to 2 rows on outputs (about 20 to start with). Then I would write a program to control the LED rope lights, dependant upon the inputs (not too scared about that bit).
However, I have looked at the cost of this, and as a little project the cost starts to spiral, particularly with the number of MOSFETs this would require. Is this a sensible way of going about this project or is there something obvious that I am missing?
I hope I have made myself clear. Thanks in advance for your advice.