[Weekend Projects] Pet Water Warden – Make

details

Here’s an automatic minder to keep your furry friends’ water supply topped up while you’re away or indisposed. Two homemade dip probes, connected to a microcontroller, sense the water level in a pet’s dish and automatically activate a pump to refill it from a reservoir when it gets low, or send a tweet when the reservoir runs out.

stella_pet_drink

 

The system I built is based on an Arduino microcontroller, which reads two sensors and controls the waterworks. The simple dip probes are built from just a transistor connected to some wire. The reservoir can be any size but I chose a 3-gallon jug — it lasts a good while but it’s not too bulky. The pet water bowl is filled by a small aquarium pump that sits at the bottom of the reservoir.

 

wp12_pww02

The tweeting capabilities come from an Arduino Ethernet shield (or a WiFi shield if you want to get fancy). If the pet bowl doesn’t fill up after a set time in the code, due to an empty reservoir or a sensor failure, it will automatically shut off and post an error tweet, so you can hurry home and top off your pet’s tank.

 

Go to original post

COMMENTS

Please Login to comment
  Subscribe  
Notify of