Hi, i have taken making robots as a new hobby and found this great site that helps me. Been using a mecano set so i thought making robots would be simple, just hook up a battery on some wheels and off it goes but it turns out you need to control it and do other things with it lol. So iam gonna make the sites reading line following robot. i read that we need a voltage regulator so we control the amount of voltage that goes into a motor so it doesn't fry, which makes sense, was wondering what other electrical things do i need to take into consideration.