Science Buddies: "Ask an Expert"

I currently do not have the push button that contains 4 pins, I only have a push button with 2 pins. Is there anyway to substitute the 4-pin button in the tutorial for a 2-pin button or no?

Hello,
The steering robot is a great project! A push button with two pins should work fine, as four-pin buttons are basically two-pin buttons with internally connected pairs, as the picture below shows:

Since there is no wiring on the right side of the breadboard with the buttons, you should be able to use two-pin buttons with the same configuration shown in the project instructions. Let me know if you have any other issues, and have fun with the project!