Main content
Electrical engineering
Bonus points
Improve your machine
Congratulations! You have completed the challenge. Now you are ready to improve your machine and share your ideas with others.
Challenge questions:
- Can you expand your program to accept two different coins?
- Can you make a mechanism to automatically measure the coin for the user?
- Can you add up how much money was provided?
- What else can you do?
Share your ideas below. Post a YouTube link to your creations. How does your machine work?
Want to join the conversation?
How do we make motorcycle(3 votes)
make a lego bike that runs on electricity of course(0 votes)
How does the Lego get their power?(2 votes)
It does not it uses electronics to move it.(1 vote)
How do you make a computer program on here cant figure it out ?(2 votes)
you have to go to resest and then go to google.(1 vote)
Does this stuff work with Lego MINDSTORMS EV3? Because I have an EV3 edition and it's a little different than the NXT version.(2 votes)- does it just count nickels?(1 vote)
It does not count them, it detects the coin by measuring the angle that the coin leaves when inserted between the two bars. Different coin => different size => different gap between the bars.
Note that this is of course a very crude way to detect the coins. It will not work with unknown coins and it will have a hard time to distinguish between two coins with very similar radius.(1 vote)
I was in a robotics club/comp. team and this really could have helped me a LOT if I knew about it earlier.... But, what exact model or kit is this?(1 vote)
It is the Lego nxt 2.0 Not 3.0 or 1.0 2.0(1 vote)
how does it know the degrees it turns?(1 vote)- how do u make one of theese machines(1 vote)
What stuff do you like to do(1 vote)
What does Lego have to do with Khan Academy?(1 vote)