It may find innumerable clips of ping pong shooting robots on YouTube. However, none of them provide a full explanation or blog on how to make a ping pong robot, which is surprising. On the internet, we can’t even locate it! To fill this void, I’ll have to create my own.
- These are the design’s main features:
- Motor. It does not have any form of microcontroller or computer.
- A typical 5V USB power bank can power it.
- It can rotate the motor around the tube to change the ball’s spin.
Types of equipment
You’ll need a lot of stuff to get started. Personal toolboxes are a significant investment right now. Basics, feeders, and shooters were all separated into three groups:
As a starting point, here are a few things you need to know:
Get a toolbox, even though it may seem odd to propose such a thing here. It helps keep everything in order. If you can, choose a transparent plastic one so that you can locate items in a jumbled mess more easily.
For connecting the circuit or electrical wires. You need these wires:
- Jumper wires
- Header pins
- We use a 5V 1A phone power bank and a USB cable with a type-ahead for my power supply. It doesn’t matter if it’s been sitting in your drawer for years damaged USB cord.
- To avoid shorting out your laptop’s USB port, you may alternatively utilize a USB extension cord. Get a lot of AA batteries, or buy some.
- Sticky things may be attached using glue. If you have a stove, you don’t even need a glue gun. You may also use it to join wires together quickly and conveniently. In comparison to soldering, this method is far less hazardous.
- Screws and nuts are needed to keep things in place. A recommendation on size is impossible since your motor/equipment may be different.
- Screwdrivers in a compact package.
- A switch (optional) — so that it may quickly turn on and off the whole circuit. Alternatively, you may pull the wires in and out of the socket.
- Tape made with electricity.
To build the feeder’s base, a few pieces of foam. It’s also possible to utilize another item.
- A transparent plastic bucket is preferable so that you can see whether the bucket is full or if anything has gotten trapped inside of it. Use a container that isn’t too high. The feeder may not work effectively if the bucket is full of balls.
- A “geared” motor, but it has additional gears to slow down the output. So 6V DC 20rpm gear motor is what I’m using.
- The feeder disk should be made of solid cardboard.
- Depending on the kind of motor you’re using, it may use Screws and nuts to keep the engine in place.
- A tool for soldering.
- Newspaper for cleaning plastic melts off the soldering iron, for example
- Ping pong balls are a must, too! ‘
- A pair of 10–15cm-long PVC pipes. The diameter of a ping pong ball is 40 mm (1.57in). To meet this requirement, the pipe’s internal diameter (ID) must be greater than that. It would be a 1-1/2″ size based on the table below.
- A PVC coupler – to connect the two pipes. Because you can move the shooter around, you can change the ball’s spin, which is why I use two pipes.
- We use the RC (remotely controlled) automobile wheel with a rubber tire.
- We use the motor with a 14k rpm speed limit. So it’s a lot larger than those tiny RC vehicles.
- A low-voltage motor speed control.
- Nuts and bolts that suit the steel hanger strap. There should be no problem with a one-foot-long rope holding the fast motor to the pipe. But don’t be afraid to purchase a few more just in case.
- If your engine has a gear, you’ll need a little gear puller to make installing the wheel a little simpler.
Once we have all of our supplies, we can begin.
Begin with the feeder.
To use the slow motor, attach it to the bucket. Next, punch a hole in the bucket’s middle using a soldering iron. It is then necessary to make a second set of tiny holes for the screws that hold the power supply in place. The soldering iron will adhere to the plastics, so you’ll need a piece of paper to remove them.
Punch a large hole towards the bottom of the container. Put the shooter pipe in here. An oval form is the only option. The shooter pipe doesn’t need to be in the bucket as much as I had initially been envisioned. Just a little more than half the ball’s diameter is adequate to capture the ball.
You must prepare the feeder’s disk. I just cut a circle out of sturdy cardboard and tuck it inside the bucket. Trap the ball by making a tiny circle on the edge of the process.
Attach the disk to the slow-moving motor. As a basis, I connect a tiny plastic disk to the motor before attaching the cardboard. The cardboard should be able to stand up to this.
Build a foundation. To stand on its own, it will have a motor sticking out of the bottom. We need to build a foundation for it. I just hot glue a few pieces of foam to the bottom.
Please take a look at it. Then, it’s time to test the motor’s ability to catch the ball.
To make a feeding pipe for the livestock. First, create a rectangular cut on the pipe’s side. Then, the feeder disk has to be able to spin freely to collect the approaching ball.
Feeder Pipe: Tape Pipe to Feeder. Allow for some wiggle room by taping first. Then, after the last test run, we’ll hot glue everything together.
Make sure that the feeding pipe is working correctly. Run the sluggish motor with some balls in it. Ensure that the ball enters the disk and exits the pipe correctly.
Make a pipe for the shooter. The second pipe is yours. Again, make a rectangular cut on the pipe’s side. This time, the prize goes to the fastest vehicle.
Put a fast motor on the pipe and secure it. The steel hanger strap is what we’re going to be using in this instance. Leave a tiny section of the strap uncurled after wrapping around the pipe to serve as a foundation for the engine. Steel hanger straps are an excellent choice since they can be easily adjusted and are strong enough to handle the weight and vibration of the machine.
Connect the circuit for the shooter’s motor. Connect the voltage regulator to the motor. Make sure you plug in the controller to your power source as well. Perform a motor test.
Try firing the gun. It’s time to get the engine running, feed the ball into the pipe with your hand, and watch it fly! It is when things become a little more exciting.
The coupling pipe can use to connect the two lines. The central ring may be narrower than the others in certain connection pipes, preventing the ball from passing through. That’ll have to go in the file. I utilize my high-speed motor to do the filing.
Cutting foam to hold the shooter pipe is all that is needed. Using a large piece of cardboard, connect the feeder’s base to serve as a stable foundation for the whole contraption. Vibrations from a rapid motor might cause your robot to move in an unintended direction by adding a layer of rubber on the bottom.
Verify every step along the way!
Frequently Asked Questions
How does a robot play table tennis?
Robotic table tennis balls may be fired from one side of a table tennis table to another end in a controlled way through table tennis robots. You’ll be able to practice against various strokes and spins, including topspin, backspin, side-spin, and more.
What happened to the cotton ball?
As long as there is air stuck between the fibers, cotton balls will float. The cotton ball sinks deeper and deeper as water seeps in to take the place of the trapped air. The cotton ball sinks after all of the air have now can replace by water.
Thomas Gree is a technology geek and robotics expert. He loves to automate things and has great research in the field of robotics. For him, robots are the way to automate our daily tasks. You can find more information about our team on about us.