### Programming and theory

If you have constructed a car driven by two motors, you will have to download the block from the previous lesson and modify it. Then you can continue with following a line.

**#772**- 09 Mar 2018

If you have constructed a car driven by two motors, you will have to download the block from the previous lesson and modify it. Then you can continue with following a line.

**#772**- 09 Mar 2018

Let us do a quick recap of the whole lifting mission and its solution

**#467**- 05 Apr 2017

In the previous video, we found the correct answer for our task and it is 18.75, or is it?

**#471**- 08 Apr 2017

Sometimes the answer that you get by calculating seems not to be right. Is it the calculation that is wrong. Probably it is not the calculation, but something is happening with the robot.

**#472**- 09 Apr 2017

Connect the attachment to the box robot and find the correct number of rotations of the middle motor that would bring the robot up and forward and would attach it to the mission model.

**#473**- 10 Apr 2017

How important is it to have predictable behavior in your classes.

**#475**- 29 Apr 2017

If you've done the calculation following the previous tutorials you would arrive at a result of 18.75 rotations. But this is not the correct answer. The calculation is wrong, because the math model that we've built, although kind of obvious, is not correct. When experimenting the correct number of rotations would be 37.5. This is a large difference. Two times larger. Exactly two times large. Something should be happening here - and this thing is "planetary mechanism"

**#476**- 12 Apr 2017

How great is the great attachment for lifting that we built in this course? How many times can it lift the robot without making an error? How great are your attachments and how could you test them? - the answer is simple. Just try 10 times and they should work at least 9 of them as our attachment is.

**#477**- 13 Apr 2017