Project Sharing and Robot Design

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Project Sharing

We had to think of a problem and then think of a solution. We picked exercise. The robot is a personal coach that is in space, it helps motivate them. Sometimes you can have bone loss, height change, and lots more. When we had programmed the robot (which wasn’t really ready) we went to Advance Performance to show what our team had learned and done so far. They had liked our speech and gave us very useful feedback. One of the adults said “wouldn’t the robot float around,  so it wouldn’t it have to be bolted or tied to the floor”. Another one said “you could use a resistance band that exercises your arms”. You cannot have heavy lifts, everything is light because there is no gravity in space; down on earth it would be really heavy as there is gravity there.

Robot Design   

Some of our design thoughts and decisions we made:

The reason for the top hook on our robot is it’s high, not low, as when we tested it out it would hit the side of the container (the airlock) but if it was higher the Gerhard could easily drop in.

Hooks: we have different hooks at different heights because of the different challenges we choose to participate in. The lowest hook is for the Payload. The second highest is for picking up the Gerhard (person).

It took a long time to build the arms. When we used a tele-handler (loader), it did not work as it kept on knocking the challenges down, so we had to rebuild it; instead we had to use a forklift  instead as it is smaller. It took a long time, nearly an hour.

Banana: We used a banana on the end of the hook as when we didn’t have it it would either slide off before the challenge or it wouldn’t come off when the person was lifted in. when we tried the banana it was better as it could slide off easily in the challenges.   We have since changed to a different more stable hook.

Skid (Slider): It is there instead of a wheel but it doesn’t move. It is better than a wheel because it can move in any direction at any time.

Mast heights: The mast stops at a certain bit as there is a lego piece that is under the mast to stop it from banging onto the floor.

This is an example of one of our programs that we created for a challenge:

So we had to use the move steering motor, then turn, and use the speed 75, and put how many times the motors had to turn round, brake, then we put all this code in a loop.

Then we had to choose which sensor it was, light/colour. To find the black line it had to be equal to 4. It finishes and moves on. Then it stops the motor for pause.

We then have a medium motor, make forklift go up and down, the speed, then one turn. It stops, waits for two seconds for the next thing. The motor we need is called move tank, it control both motors separately, the 1st and 2nd motors, 1 turn of each wheel then stop.

The motor that we need now is medium motor. Back the other way then the forklift has to go up and down. The last motor that we need is a medium motor. It has to be straight/no steering and -7 to go backwards. Then it stops for the next challenge to take place.