NXT Plant Waterer

We built a device to automatically water houseplants when the soil becomes too dry.

This robot uses the Vernier Soil Moisture Sensor, the NXT Sensor Adapter, and a LEGO Hand Pneumatic Pump to control the soil moisture content for a plant, automatically watering the plant when it is too dry and stopping when it is too wet.

The NXT program specifies upper and lower soil moisture levels. Water is in the bottle reservoir. If the soil is too dry, the motor operates the pump, forcing air into the top of the reservoir. The increased air pressure pushes the water out of the reservoir and onto the plant.

When the maximum soil moisture is reached the motor shuts down and the Soil Moisture Sensor monitors the soil as it dries, repeating the watering cycle as needed.

This is simulated in this movie by moving the Soil Moisture Sensor back and forth between wet and dry soil samples.

For a full project description, visit http://engineering.vernier.com/general/projects/plant-waterer/

Category:

Science & Technology

Tags:

• vernier
• sensor
• nxt
• lego
• robot
• program
• mindstorms
• soil
• water
• dry
• plants
• moisture
• pneumatic
• pump
• air
• pressure

[legostuffguy]

building that takes like 10min

[watermelonpizza]

ohhh i get it, thats awesome

:D

[subtotal17]

jUWET JUWET JUWET, thats all that motor says

[MrSausi]

COOL

[Nanovirus5995]

Etsio Etsio Estio Etsio... Did anyone else hear that?

[deathbladefromhell99]

@hutadut larger water reservoir

[GtownHoyas1]

what is the device that is shown between 0:41-0:45? I really need to know because I want to build this. Thanks!

[Tunerboii2045]

its only easy if u kno exactly if u built the same thing over and over but slightly modify it but go to something completly different it takes alot of thinkin process u kno

[americaneagle791]

Oh now I see how it works. Your using pressurising the water bottle and the water dosen't have anywhere to go but up the tube. Smart :)

[manoffire11]

lmao