Hi! Our names are Jason and Bryan. We are taking a computer class at Vina Danks Middle School in Ontario, California. In the first two trimesters this year, we learned how to do Logo programming using MircoWorlds and how to make web pages using HTML. This trimester we are building with Legos and programming them with Logo software that comes with the Legos. Our Lego project was a vending machine. It takes a coin or a brick and scans it. Then it will give you a brick that is either blue or yellow depending on the color of the coin or brick you put on the coin slot. This project was kind of hard to do. It has many parts. Sometimes we had some parts missing so we to go look in the spare parts box. Most of the time we didn't find the parts we needed so Mr. St. Clair got another kit and we used the kits parts. We also had to put a ton of wires to make it move. When we were done we had a mess of wires everywhere. After we got them untangled, we plugged them into a Lego interface box. Then we needed to program the software to know which port on the Lego interface box has which device. Then it was time to write procedures. We got lucky and we had to write only a few. After we wrote them it was time to test it out. We first checked the motors and one them didn't work. So we checked it out. We then found out that it had no rubber band. So we tried putting it on, but we had a hard time putting it on. It was all the way inside the machine. Finally we got it on and tested the other devices. They all worked. Then we made a button to start things up, but it didn't work. It dosen't give time to insert a coin. So we reprogrammed it to wait until we push a button on the machine to start scanning. Then it worked! After it worked we wrote about it here and destroyed it! I hope the next project has all the parts!!
Below is a picture of the Lego project and the procedures.
to yellow
talkto [motorb lampd soundc]
setleft
onfor 15
end
to blue
talkto [motora lampe soundc]
setleft
onfor 15
end
to coin
waituntil [touch1]
tto "lampf onfor 20
check.color
coin
end
to check.color
if light8 >= 40 [yellow]
if and light8 >= 30 light8 < 40 [blue]
end