This motorized tripod head can be used for moving video shots and for rotating time-lapse videos. If you want to record a video you must set TIME to 0. The variable MOVE represents the speed of the rotating head (5-100).

Three examples simple usage of switch block with colour and distance sensors
- a gun that detects colours
- vehicle following the line
- explorer vehicle

I've never used a pull-back motor in other constructions than cars. But recenly I got the idea to apply it into the throwing balls like a catapult
in my new GBC.

The castle has been conquered but princess managed to escape.

Today I would like to show you a simple lego gadget which make your coffee better. My lego milk frother is very simple. You only need 8293 set and few pieces to build it. Medium motor and gear give about 1200 rpm. This is not much but enough for milk foam. Bon Appetit!

This is very practical device that feeds the aquarium fish, when I wander somewhere with my family. It is controlled by Lego wedo and scratch so computer must be powered all the time.