Lego Water Pump

Using a basic principle of concentration gradients, I built this water pump out of nothing but Legos and a plastic water bottle.

More information here:

http://web.me.com/robbiemccarthy/Compositions/pump.html

How it works:

One Lego motor, drawing power from a Lego battery box, activates a Lego pneumatic pump which pumps air through one tube into the sealed water bottle. The water is forced out by the increasing pressure into the other tube protruding from the cap; into a plant, cup, or any other vessel in need of a soaking.

One variation of this which i have been wanting to try, is connecting it to an RCX or NXT brick. By doing this, I could make it light sensor activated, so it waters my plant ever morning. (As long as the RCX/NXT has an external power source, which you can find online.)

Send me feedback and other project ideas!

Category:

Science & Technology

Tags:

• lego
• mindstorms
• water
• air
• plant
• pneumatics
• automatic

[Crytek1337]

is hydraulics a possibility in lego?

[robbiemccarthy]

@Crytek1337 technically yes, but in a book i read, all the pumps and cylinders were ruined afterwards…

[BamMcGra]

But Will It Blend? Great Design By the way!

[robbiemccarthy]

@BamMcGra hahaha best comment so far… and thanks!

[mabrekl]

why do all are asking for a totorial????!!! it is the most simplest think in the world, it's only air presure

[markaross3]

your an awsome inventer robbiemccarthy

[Crytek1337]

@robbiemccarthy oh, to bad :/!

[aviator5177]

but the water level is high no need for a pump. once the water start flowing it will come to the tank without any pump.

[legosafe]

MAKE A TUTORIOL!! PLZZZZZZ????

[Zwickselaer]

Good thing it's so quiet!! :P

[montaramike]

Nice!!! that is so cool!!

[kylecookie2]

howd you make the website

[17dragon1]

where did you get the tube