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Topic: Cat Sprayer (Read 2976 times) previous topic - next topic

RobertMParker

My cats wake me up every weekend by scratching/rattling my bedroom door at 6am or earlier.  I would like to build a detector and sprayer to train them to let me sleep in a little(just until 8 or 9 am!).

I have a standard water spray bottle that I use when they are being bad.  It's harmless to the cats and my carpet, and they hate it.  But it needs a good amount of force to trigger, and none of my servos are powerful enough to trigger it.  Maybe I could buy a solenoid to control it.

I feel like the standard ways of dispensing water with either a pump or a gravity-fed valve will make a mess on my carpet. 

I found an article on instructables about an arduino shooting silly string.  But the cats might enjoy that. :)

Any ideas?

Onions

Quote
it needs a good amount of force to trigger, and none of my servos are powerful enough to trigger it


Try a high torque servo:
http://cgi.ebay.co.uk/15kg-METAL-GEAR-High-Torque-Servo-Futaba-Spektrum-JR-/330562543363?pt=UK_ToysGames_RadioControlled_JN&hash=item4cf7101f03

Onions.
My website: http://www.harryrabbit.co.uk/electronics/home.html Up and running now! (Feel free to look round!) :D

zoomkat

Another inexpensive servo. As for conditioning the cats, it may be best to use a push button so they can be sprayed while scratching. I have the same problem, but I just get up and let them in.   

http://www.hobbyking.com/hobbycity/store/uh_viewItem.asp?idProduct=16643
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

Jack Christensen

We have the same problem here, the cats just don't seem to get the weekend concept.

I'd be curious what you have in mind for the sensor.
MCP79411/12 RTC ... "One Million Ohms" ATtiny kit ... available at http://www.tindie.com/stores/JChristensen/

justjed

Maybe something other than a sprayer would be as effective.

http://www.youtube.com/watch?v=-b9m8BpmD0o
http://www.youtube.com/watch?v=LJ6pmbPoPAI

Or, turn on a fan?

Maybe a cam driven by a motor could actuate the trigger on the spray bottle.
... it is poor civic hygiene to install technologies that could someday
facilitate a police state. -- Bruce Schneier

rederikus

This video, whilst humorous outlines all the parts you will need to assemble your cat squirter.

http://www.youtube.com/watch?v=uIbkLjjlMV8&feature=autoshare

To avoid soaking your carpet, opt for a very fine spray.  Thay way you can use less water with each shot.

AWOL

I read the title, but missed the first 'r' in "sprayer".
I had in mind an accurate high-power laser.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

justjed

Well, that was funny.

But it did bring to mind using a windshield washer pump instead of a spray bottle. Get one from J.C. Whitney, or your local auto parts store. Maybe 5 amps? Under $20.
... it is poor civic hygiene to install technologies that could someday
facilitate a police state. -- Bruce Schneier

rederikus

A cat spayer --  Hmmm. 

I like the idea of a windshield washer motor.  It would need to get to pressure quite fast but you could do that by having a small diameter spray nozzle. 

Detection is easy enough. Just use a Passive IR detector (PIR) and make it directional like in the video clip I put up.

The Arduino would be used to actuate the motor based upon input from the PIR detector.  These things generally have a dry contact to trigger the alarm and this could be used to input data to the Arduino.

The Arduino would also regulate the length (duration) of the spray.

RobertMParker

They woke me up again at 5am this morning.  If I let them in, they knead my face until I get up.

I don't know about a windshield sprayer.  Those shoot a pretty intense beam, I'm looking for light mist.

I think I'm going to try a higher torque servo, the price is right and it looks pretty powerful.  I'll probably connect it to a staples "easy button" on my night stand.  I still haven't decided what kind of sensor to use.

zoomkat

If you want to go low tech, you could make a manual sprayer. Get some aquarium tubing, empty plastic drink bottle, and a spray head from one of the single finger sprayers. Drill a hole in the drink bottle cap and insert the tubing so it goes to the bottom of the bottle. Hot glue the tubing in the bottle cap top to seal it up. Get sufficient tubing to reach from the bed to outside the door. Hot glue the spray head on the door end of the tubing and aim where the cat are. Fill the bottle with water and attach the cap. When the cats start scratching, give the bottle a good squeeze.
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

justjed


I don't know about a windshield sprayer.  Those shoot a pretty intense beam, I'm looking for light mist.


Just cut the nozzle off a cheap sprayer, and connect the hose from the pump to that.
... it is poor civic hygiene to install technologies that could someday
facilitate a police state. -- Bruce Schneier

bHogan

"Data is not information, information is not knowledge, knowledge is not understanding, understanding is not wisdom."
~ Clifford Stoll

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