This module was inspired by classic Abyssinian pump which sometimes is using by Mikołaj's grandmother. We moved it into the Lego GBC world module which pulls up the balls. Our pump is 8 balls high. We can pump balls by hand or using a crank connected to the lego motor.
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!
I was thinking, for a long time, about GBC module using a switch to change the direction of the motor rotation. After many tests and making several prototypes, finally I can introduce a properly working contraption.