Simple Machines

Simple machines teaches you about the natural forces and using them in creations. First we researched the 6 simple machines and what they do. Then we had to make them out of K’Nex. Here is a picture of my design book after I finished the task.

Then we had to use what we had learned and make a big machine using one of the simple machines. Here is a video of my pulley.

Here is a close up picture of the pulleys that is making the whole machine work. there is two pulleys because there is one on the tower and one on the box being lifted into the air.

After this the teacher let Tom and I start Lego Wedo 2.0. Here is a video of me building my first project.

Then we had to do the programming for our Lego car. The teacher showed us how to Bluetooth our computer to our Lego control block. The program was easy because the Lego Wedo 2.0 software shows you how to do the program. Here is a video of our Lego car working.

 

 

The Ultrasonic Sensor challenge

This was a tricky challenge to do because I wasn’t there at the time when the teacher explained how the ultrasonic sensor works and about it’s functions. It was hard to get my program right, so I asked my friend Tom and he helped me. The ultrasonic sensor senses objects and it senses them from a distance. We had to use the ultrasonic sensor to stay in a square of barriers with our program. The easy part was the turning of the robot in the program. I found that bit easy because I have done challenges before that require turning so I have already learnt how to do it. Here is my program and a video of my robot completing the course.

Paper Kites

Paper kites-1vs9798

Here is the link to my power point that I have made about the paper kites. It explains about the angles and how I worked out what each angle is without using my protractor. I have inserted pictures showing my evidence and proving how I found the angles without a protractor. Here is a picture of my kites.

Ev3/ line following challenge

 

Above is my program for the line following challenge for my Ev3 robot. We were asked to program our robot to follow a black line in the shape of an oval. We needed to use the switch block in our program in order for it to work. I tried lots of different programs. It was very complicated and I was extremely happy when I got it right. Here is how my program works.

Red: This block is controlling the switch block. It is told to sense white. This Is because the line is not black.

Black: This is what will happen if the robot does not sense white. If this happens, the robot will just keep going.

Blue: This is the first block of what to do if the robot senses white. If this happens, the robot will drive forward on an angle. It will turn until it senses black.

Yellow: This is controlling the colour sensor. I have told it to sense black.

Green: This now telling it to go forward without stopping.

Purple: This is telling it that when it senses black, to do the whole program again.

Grey: this is just the repeat block, making the program replay.

Here is a video of my program working.

 

The switch block challenge

This is the switch block challenge. We had to program our robot to stay inside a piece of paper using the switch block. Above is a snip of my program. This is how it works. The block circled in blue is telling our robot to go forward. The block circled in green is controlling the colour sensor. It has got the number controlling the colour it is sensing and what port it is transferring energy to. The blocks circled in red is telling us what will happen if the robot senses green. (we could have sensed other colours but we chose green) If it does sense green it will turn around then go forward searching for more colour. The block circled in black is what to do if the robot does not sense green. If this happens, it will keep looking for green. And finally, the block circled in purple is the repeat block. I have told my robot to repeat 20 times, but you could do more or less. Here is a video of the program working.

Hummingbird

This is a picture of all the parts available to us in this project. We have got LED’s, tri colour LED’s, motors, servos and much more.

 

here is a snip of the program we used for this exercise. The green box at the top is a bit like a summary of what will happen if we complete the exercise. Here is a video of it working.

 

 

Here is our program for the next exercise. This one is where the light goes to one colour (ETC blue ) waits for one second on that colour, and then changes to a different colour. The purple blocks are the ones telling the LED to light up. The button that says “forever” on it is telling our program to keep repeating forever. The button at the top basically is just saying that if we press space button, the program will start.

here is a video of this exercise.

This is the vibration motor. Here is the snip of our program. The vibration motor tickles a lot! Underneath is a video of our program.

 

Here is the light sensor. It depends on how low or high the light level is. 1 is really dark and 100 is really bright. Here is my program for this task. I have 2 videos here.

 

This is the second video. It is a bit different. When the light sensor senses that it is dark, the vibration motor will start to spin.

this is the exercise box with the task.

 

Ev3 / colour sensor

 

this is a snip of our program we used for the robot. The first program block is telling our robot to go forward. The second program block is the colour sensing block. The first block on the colour sensing block is the wait block. The block with the 5 on it is controlling what colour it is sensing. The B and C on the green block controls what port the power is coming out of and then powering the wheels. The big green arrow at the front is the start button.

This is a video of our colour sensor working on a green piece of paper. The little thing on the front is our colour sensor. When it senses the green piece of paper, it will stop. The colour sensor can also sense other colours. The colour sensor can also sense a line and follow it.

half term Ev3 reflection

I think that Ev3 has made me think about accuracy when I have doing challenges. It also made me explore the programming and discover different things that the robot could do. This project has made me work hard to complete challenges and solve problems. I wonder if the next five weeks make me think as hard as the past few weeks.