Today Oscar and I started our project, we are making wedo 2.0 cars. Today we watched some videos about lego cars to help us get ideas. We couldn’t start building the cars because the batteries wouldn’t work.
Today we started building our car and we got the program to work. We added parts from my lego corvette from home and this is what it looked like.
We also had to do the program for our wedo 2.0 to make the car to drive. This is a picture of the program.
I made the blocks say 99999 because that means it will go further and for more time. We have to drive our car on flat ground because otherwise it won’t work because the wheels will get stuck in the dirt and the tires will get dirty.
today I wasn’t here for two periods but Oscar made a new car. he programmed it so the car makes a sound before moving. When I got back to school we had a race with the corvette and the buggy z4( that is the car that Oscar made.
today Oscar and I made a four wheel drive, we had to remake it four times because the wheels weren’t working because sometimes they were too big we finally got it to work but they kept driving off on an angle. Here is a video of our three cars racing.
Today Oscar and I remade the four wheel drive car. We remade it because we thought we could make it faster and look better. First we widened the car then we added decorations on the hood of the car. Here is a photo.
The four wheel drive car still wasn’t faster than the buggy z4 which we were aiming to make it faster than. We then tried lots of different wheels. The buggy z4 was still faster. We adjusted the buggy z4s back wheels to try and slow it down to make the four wheel drive car faster and we made the buggy z4 faster accidently. That just gave us a harder challenge. We tried another pair of wheels on the four wheel drive car and then we had a race. It finally was faster by about 2cm. Here is a video of the race.
Next session we are going to try and make the cars better by improving their aerodynamics. I have an idea to make a car with 2 motors ( we can’t get any more motors) but I don’t think we will make it because Oscar wants to keep all 3 cars. I think that would be ok because on presentation day there would be more competition when we do our races. it would also give us more of a challenge to make all 3 cars fast.
today Oscar and I did some more races with the cars. I figured out how to add sounds to my program so I added 5 sirens and 2 dolphin sounds just to see how that worked for a test. Next week I will make the sounds better and experiment with which ones are better or I think sound better. Personally I love the sirens. Here is a snip of the program.
Today I remade the program so I had the sirens in one program and the driving program separate. I did this so the sirens are always going instead of just at the start and then you have to wait 10 minutes for them to play again. In the driving program I made it say 111 instead of 9999 because then it will go for less time. Here is a snip of the new program.
I also remade the corvette because it was lacking speed and was getting flogged in races so I remade the model and tried to make it faster. I made it better by reducing weight and improving the aerodynamics. It looks a bit goofy on the front because it is missing pieces that would usually be there so that is why it looks like that.Here is a picture of the new model. It doesn’t look much like a corvette anymore though.
While I made the corvette Oscar made some changes to the buggy z4. He changed the wheels and he added a glass screen from my corvette. Here is a picture of it.
Then we raced are cars on the tennis courts. the corvette has a problem with turning to much so that is what we will work on next session. The corvette had some malfunctions but I fixed it and made it work. Here is a video of the race.
on Tuesday we raced the cars throughout the whole classroom. We couldn’t make it work because there wasn’t a clear path in the classroom. It also kept turning a lot so we fixed that so the corvette drives straight.
today Oscar and I took our cars to the gym because we had lots of room to drive them. We are now going to show you the statistics of the cars.
length: 15 cm
height: 10 cm
10 metre time: 29 seconds
width: 11 cm
length: 15 cm
height: 8 cm
10 metre time: 48 seconds
width: 6 cm
length: 11 cm
height: 6 cm
10 metre time: 32 seconds
width: 9 cm
today I remade the buggy z4 because it wasn’t working. We tried everything but it didn’t want to work so we broke it and built it again. Now it is square and is a four wheel drive. Oscar named it the 1970 Volvo. here is a picture.
I also adjusted the rubber band on the 4×4 because it made it faster.
Oscar made a track four the 4×4 with lots pf obstacles for it to go over. It can easily clear the track because it is so big. We figured you can only clear the track if you have big enough wheels and if the cars body is high up. That’s why the 1970 Volvo couldn’t make it. here is a picture of the track and some videos of the cars failing and completing the track. the second video is an example of how the small wheels don’t work. P.S. the 1970 Volvo isn’t meant for the track.
today we did a lot of work because we made the flat track. It has coloured sticky tape for the checked pattern at the start and finish line. the track took about 2 hours to make. All the cars drive well on the track because the cardboard is flat. There is some wholes but next session I will fill them in. I also changed the wheels on the 1970 Volvo so it could go faster on the track. Here is a picture of the track and some videos of the cars clearing the track.