I found a old RC Car. I'm electronic begginer, so my question might be dump, but I can't figure out how I can do this. I Separated the remote and connected it's power to the Arduino board.
At this time the project looks like this: ( It's working )
The buttons are connected to the chip and to the ground. If the button was connecting the 3.3v to the chip, it was going to be fine, I was just going to do as the picture ( My goal ) above, but now I don't know how I can accomplish my goal. My question is how I can switch pins between ground and "chain breaker" ?