I'm working (or trying to work) on a project involving 9 sets of LED arrays. The goal of the project is to turn the LEDs on whenever a force sensor is pressed. I'm using arduino for this for simplicities sake, and so that i can tweak how the light arrays react with one another (how they light up in sequence, etc.) I'm going to be using an UNO for this project, so If i use pins 3 - 11 for my LEDs, that leaves me with pins 0, 1, 2, 12, and 13 free. (although 0 and 1 are the transmitting and receiving pins, is there any way i can use them?)
Now, before i go on, I'll have to say that I'm very new to Arduino, and if anything i say is wrong or if theres a much simpler way, please let me know.
Anyway, I have 5 digital pins remaining, but I also need to have 9 force sensors (one per LED array). Now, I still have all 6 analog pins free, so is there a way that I can make the analog pin act as a digital pin, or would there need to be a difference in coding?
If i need to buy a larger board, like a mega, I can easily do that, but i just trying to make this work with what I have right now.
Thanks for any help you can give me.