The last robot has to make sure the containers are standing upright.
If they are, they should slide the container right to the ship.
If the container is tipped over, it should turn on a warning light.

Job 4, Day 2

The top sensor will see if the container is standing up. The bottom one will steer the car. It will bump into film containers and push them onto the loading thing.

This is the thing that will collect all the containers and then will dump them into the ship.

Job 4, Day 3

We need to plan out how to do this. We acted it out first too. Things happen at the same time so the sensors don't work one at a time. We planned it out on paper.

We took the wheels off too.

Job 4, Day 4

We started programming the bottom sensor first to make sure it would work. It only worked part of the time so we used a paper at the back.

It worked better on the floor where it was darker. We used the number on the robot from the light sensor to find a good number to use.

[They were using a fork split based on the light value. They found the light value to use by looking at the RCX display.]

 

Day 5 and 6...

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