The Cat Launcher - Energetic Cat's Workout Toy or Just a Lazy Owner
Intro: The Cat Launcher - Energetic Cat's Workout Toy or Just a Lazy Owner
Here I'm glad to present to you my next invention!!! - The Cat Launcher
This toy is for your cat or dog or other lovely friend that is going absolutely CRAZY to chase a moving object!
With this crazy machine you pull the string away from it ... place the string with the SHINY object at its end in front of the cat ... back off ... and ... press the launch button!
And then what you see is an animal desperate to catch the attractive bow!
This toy is for your cat or dog or other lovely friend that is going absolutely CRAZY to chase a moving object!
With this crazy machine you pull the string away from it ... place the string with the SHINY object at its end in front of the cat ... back off ... and ... press the launch button!
And then what you see is an animal desperate to catch the attractive bow!
STEP 1: Lazy Cat in Action
Here is a short video that shows the Cat Launcher in action!
STEP 2: How to Launch the Cat?
1: Put the switch to Astronaut mode.
2: Press the launch button and enjoy the cat orbiting around.
I'm sorry for the blurry photos, but cat is too fast!
2: Press the launch button and enjoy the cat orbiting around.
I'm sorry for the blurry photos, but cat is too fast!
STEP 3: Parts Supply
These are the basic parts needed.
LEDs may be skipped, I have them just to make it more interesting.
You need:
LEDs may be skipped, I have them just to make it more interesting.
You need:
- A plastic box
- Switches
- Small DC motor from a toy
- Reel and string
- Battery holder and batteries (holder for two or three 1.5V batteries)
- Cables and heat shrink tubng
- LEDs (optional)
- Labels (optional)
STEP 4: Tools Needed
You may need:
- Drill and bits
- Knife
- Gauge
- Soldering iron and soldering wire
- Zip ties
- Cable cutters and Pliers
- Hot glue
STEP 5: Layout Planning and Connections Circuit
The circuit schematic shows all the connections. For simplicity one of the speeds can be omitted as well as the LED.
Ensure that the box is large enough to fit the motor, battery holder as well as the switches.
Ensure that the box is large enough to fit the motor, battery holder as well as the switches.
STEP 6: Battery Terminals
I used a battery holder out of a flashlight.
Because the motor spins too fast at 4.5V, I soldered a cable at the 1.5V spot to have two different speeds for the operation.
NOTE: Use the first positive terminal as shown on the schematic diagram. The negative terminal is common for the two speeds.
Because the motor spins too fast at 4.5V, I soldered a cable at the 1.5V spot to have two different speeds for the operation.
NOTE: Use the first positive terminal as shown on the schematic diagram. The negative terminal is common for the two speeds.
STEP 7: Motor Connectons and Reel
Solder two cables to the motors terminals and insulate with shrinking tube.
I used hot glue to attach the reel to the motor axis.
I used hot glue to attach the reel to the motor axis.
STEP 8: Motor Stand
Using a piece of soft white plastic I made a stand for the motor. I cut two slots for zip ties and tied the motor to the stand.
STEP 9: Buttons Control
Drill two holes in the box to fit the buttons. Here you may need the gauge to measure what is the button diameter to determine the drilling bit.
One button changes the speed of the motor, other is the Start/Stop control.
If the box is very soft start with a small bit and progressively increase the size.
One button changes the speed of the motor, other is the Start/Stop control.
If the box is very soft start with a small bit and progressively increase the size.
STEP 10: String Entrance Hole
Just drill a hole on the side of the box where the reel rotates. Align the reel and the hole
I used a soft rubber piece to lay over the hole and protect the string from the harder plastic.
I used a soft rubber piece to lay over the hole and protect the string from the harder plastic.
STEP 11: LED
LED is soldered and its wires are insulated using the shrinking tube.
STEP 12: Limit the LED Current
Voltage drop on LED = Resistance * Current
Resistance = Voltage drop on led / Current = 2.5 V / 15 mA = 160 Ohms
160 Ohms resistor is enough to limit the current through the LED to 15 mA.
NOTE: The LED will have sufficient current through it to light it up only when powered at the higher voltage with the resistance in series with it.
Resistance = Voltage drop on led / Current = 2.5 V / 15 mA = 160 Ohms
160 Ohms resistor is enough to limit the current through the LED to 15 mA.
NOTE: The LED will have sufficient current through it to light it up only when powered at the higher voltage with the resistance in series with it.
STEP 13: Mount the LED
A hole is used to keep the LED in place just where the string enters the box.
STEP 14: Soldering Time
Ideal soldering iron temperature is about 380-390 degrees Celsius.
All cables are soldered and insulated with heat shrink tubing.
Finally zip ties tidy the mess and the connections look better.
It's a good idea to keep any wires away from the string and reel.
All cables are soldered and insulated with heat shrink tubing.
Finally zip ties tidy the mess and the connections look better.
It's a good idea to keep any wires away from the string and reel.
STEP 15: Apply Hot Glue
I used hot glue for the motor base and the cable that supplies power to the LED.
STEP 16: Foam to Restrain the Wobbly Bits Around
I used some kind of porous foam to help me keep the battery holder from wobbling around.
Could be hot-glued to the box too.
Could be hot-glued to the box too.
STEP 17: Printing Labels
I had a printer at my disposal and printed some nice labels to show what each button is for.
One label is to change the speed from casual walk to astronaut's space travel speed.
Other for the string pull.
One label is to change the speed from casual walk to astronaut's space travel speed.
Other for the string pull.
STEP 18: Roll the String and Voila!!!
Finally the reel needs a string that has something attractive to the cat's preference.
I used about 5m of string (15 feet).
I also hang a wrist wrap at the side of the box.
I used about 5m of string (15 feet).
I also hang a wrist wrap at the side of the box.
STEP 19: Work Hard Play Hard
All has been said, if you like my invention, please vote for me in the contests I've entered!
Comments are very welcome!
For everyone who reproduces this instructable I will give a free 3-month Pro Membership as a reward, just post a photo of your Cat Launcher in the comments below!
Comments are very welcome!
For everyone who reproduces this instructable I will give a free 3-month Pro Membership as a reward, just post a photo of your Cat Launcher in the comments below!
43 Comments
MuezzaS 8 years ago
bijan22 9 years ago
aazzaki 9 years ago
meeeeep 9 years ago
Add a way to launch the toy, like a crossbow!
annrrr 9 years ago
noapparentfunction 10 years ago
hah! i thought of this idea myself and came on here to see if anyone did the same thing. creepy how similar our projects are actually. where did you find a spindle/reel like that though? mine's too shallow.
phead13 10 years ago
ffiend 10 years ago
firerage808 10 years ago
SaintSalvage 10 years ago
hertzgamma 10 years ago
acuchetto 10 years ago
hertzgamma 10 years ago
firerage808 10 years ago
hertzgamma 10 years ago
I would suggest to use 4x1.5V batteries to reduce the speed. Or even less, three batteries could also work. On the other side the less batteries you have, the worse because they will be drained too quick. Probably find a smaller motor.
ledshed 10 years ago
hertzgamma 10 years ago
alzie 10 years ago
Gotta give em lots of exercize.
This gave me an idea to have the string / bait
go between 2 pulleys so that
you dont have to real it out every time.
One of the pulleys is motor driven,
perhaps randomly to add some variety to it.
The action would then be unattended.
You can just sit back and watch / record the fun.
My cat loved chasing a laser spot.
He d do it for 5 min til he came up wheezing!
hertzgamma 10 years ago
And yes, cats love laser spots, I agree! :D
alzie 10 years ago
I m catless at the present.