After you put the ball down the ramp it comes to he first module. The first module has eight "Technic liftarms" bent at about a 45 degree angle that are attached to the big 40 tooth gear the balls fit right between the two liftarms, the motor turns 90 degrees every 3.5 seconds. And then after 7 seconds it is pushed off onto a ramp that leads to the NeXT module....
The next module had to bring the ball higher so that it could go down a ramp so I made a module that would push the balls up a 45 degree slope . The motor is geared down so it doesn't go to fast. The beam has axles through the end of it, so that it to push the ball up the slope to the next module.
This module was probably the easiest module to build, but it was the hardest to attach to all the others. when the ball comes down the ramp the ultrasonic sensor senses it and waits until it gets into the arm (about 1 sec) and then lifts the arm to drop the ball onto the ramp to start all over again!
Here is the program, the program has Motor A (Module 2) in a loop going 100% foward, Motor B (Module 3) waits until the ultrasonic sensor sees a ball pass underneath it then waits 1 second and then the arm moves backward 145 degrees and waits .5 seconds and then moves back into place and starts over again, Motor C (Module1) waits 3.5 seconds and then turns 90 degrees in a loop. The video which explains things alot better then me:-)
Do you know the saying "A picture is worth 1000 words"?
Well in this case the video is worth 10000 pictures:P
I really enjoyed building this it took me about a week and their was some tough challenges but it was still fun! Eve though I don't have a big chance of winning I still think it is a cool project because it is built with only one NXT 1.0 set. Thanks for reading!
If you have any questions or compliments just comment!
Thanks to 'idkwhoyouare' for the idea of putting a cool Lego picture at the end!