I have another simple question, which I cannot find the answer. I have LCD shield with a keypad, and I want to use the buttons, but there are too many pins, and too few buttons. I’m new to using Arduino stuff, and from my experince till now, I learned that with one pin, you can command a button. In the picture below it’s my board with the shield. The PWM spots, from 13 to 0 are linked with the shield’s pins. Please do ask if I wasn’t clear, or if I said stupid things.