This is a ping pong balls launcher designed to be controlled by an arduino.
It uses a servo to dispense the balls and two motors with wheels to give speed and shoot them.
All the pieces can be printed using an 3D printed and the base can be done using a CNC or a laser cutter. You can find all the files attached or on its Thingiverse page: http://www.thingiverse.com/thing:29670
My parts and everything I needed to make this project were provided by Artica. Thanks guys!
Here you can see it mounted on a Magabot and shooting a Farrusco, being controlled through Skype using an hacked steering wheel:
On this second video you can see it being controlled using a kinect at the Let's Make Robots! table on Campus Party Europe in Berlin:
Step 1: Gather the pieces
- Main Body
- Servo Support
- Two wheels
- Two motor supports
- PVC Base
- Two motors
- Two o-rings
- Arduino and motor controller
- Ping Pong Balls!
If you want to have a look and/or modify the model, you can have a look at the 123D project: http://www.123dapp.com/123D-3D-Model/Ping-Pong-Balls-Launcher/817345
Step 3: Add the servo
To dispense the balls correctly you may need to cut your servo horn as you can see on the picture.
Step 4: Attach the motor supports to the base
Tip: To keep your wires tide you can use a drill to twist them.
Step 6: Mount the main body on the base and attach the wheels to the motors
Use the four screws to mount the main body on the base.
Step 7: Add an PVC pipe to be able to store more balls
Step 8: Second part - Tilt control
It lets you control the tilt of the cannon.
Gather the parts. As previously, I will divide the necessary parts in two groups again.
- Two Servo Supports
- Servo extender
- PVC Base
- Two hinges
- Bolts and spacers
Step 10: Add the servo
In order to let the servo lift more the launcher you may use an extender as the one you can see on the photo.
Step 11: Attach it to the rest of the launcher
Step 12: Connect it to an Arduino
You can use 4 ports, 2 for each motor, but how it is only needed to have the motors spining in one direction I decided to simply connect the other two to ground.
On the picture you can see the schematics and the arduino code is attached, use any motor driver you want.