I am a high school research student who is working with an arduino kit this school year. In the instruction manual, it states "Secure your Arduino Uno to the base using 3 screws..." It's unclear whether or not the screws are located within the kit or must be purchased separately. I have looked through the kit and I couldn't find these screws. Is there a specific place within the kit that I should be looking in, or should I buy a specific type of screws myself? Thanks in advance!
You may the problem that the mounting hole closest to the USB jack is too close to the header for the properly sized screw's head. I've managed to solve this issue by using a nylon screw in that hole and cutting part of the head off with a knife. You could also file down one side of a metal screw. I like to use standoffs to space the bottom of the board a bit from the surface it's mounted to. The same screw hole is so close to the header pin on the bottom of the board that a metal standoff may make contact, which could lead to a short so I also used a nylon standoff. Maybe that's why they specify 3 screws when there are 4 mounting holes, because they realize that the terrible design of the board makes one of the holes difficult to use.