How to Build a Tennis Ball Machine

There’s no denying the best tennis ball machines are quite pricey to buy ready-made. If you’re handy with electronics, you can build your own. In this post, we’ll go through how to do this. Ready to get started?

List of Supplies

In our example, we used components from MakeBlock. Here’s a list of the supplies that we used:

  • 3 x Beam 0824-144
  • 2 x Beam 2424-312
  • 4 x U Bracket-C
  • 4 x Flange Bearing F688ZZ
  • 4 x 125 PU Wheel
  • 4 x Wheel Hub 3
  • 2 x D8x96mm D Shaft
  • 2 x 62T Timing Pulley
  • 4 x 62T Timing Pulley Slice
  • 4 x 4060 Plastic Rivet
  • 4 x 4120 Plastic Rivet
  • 24 x Type 7 GB Socket M4x14C
  • 4 X M5x5 Jbckscrew
  • 2 x 8×1.6 Washer
  • 4 x 0824-320 Beam
  • 4 x Rubber Foot
  • 2 x CNC Motor Case
  • 2 x CNC Motor
  • 24 x Timing Pulley
  • 2 x 56mm D Shaft
  • 4 x 90T Timing Pulley Slice
  • 2 x 4mm Shaft Connector V2.0
  • 14 x M3x-C Jbckscrew
  • 2 x 4x8x3 Flange Bearing
  • 2 x P3 Bracket
  • 1 x 0808-136 Beam
  • 10 x 4mm Shaft Collar
  • 2 x 3×3 Bracket
  • 1 x Acrylic Sheet
  • 2 x 1-direction motor driver
  • 2 x D4x160mm Shaft
  • 2 x 0808-312 Beam
  • 3 x 45° Plate
  • 6 x P1 Bracket
  • 24 x M4x22 Screws – Socket Hexagon Button Head
  • 8 x M4x35 Screws – Socket Hexagon Button Head
  • 28 x M4 Lock Nut
  • 6 x M4x30 Screws – Socket Hexagon Button Head
  • 12 x M4x16 Screws – Socket Hexagon Button Head

Step 1

Create the frame using an L-Shaped configuration.

Step 2

Install two right-angle connectors on the end of the base. You’ll be left with a triangular structure with the point facing forward.

Step 3

When you’re putting together the mainframe, leave the four corner screws alone. You’ll need these to attach the foot pads. Only use lock nuts on the frame because the vibrations that the machine will put out while in use will be powerful.

Step 4

Attach the foot pads to the screws in the corners, and the frame is complete.

Step 5

Now it’s time to put your friction wheel module in place.

Step 6

Now connect everything to the shaft. Tighten the screws.

Step 7

Process the rivets and then attach them to the friction wheel. It’s now time to glue on the timing belt. At this point, you want to leave the headless screw in place but not completely tightened. You’ll do that once you’ve finished with the whole assembly.

Step 8

Repeat with the other module to create the second friction wheel.

Step 9

Now that that’s done get the part you’ll be using in the bracket for the friction wheel ready, and then you can attach the friction wheels to the frame.

Next, after you prepare the part used in friction wheel bracket, you can install the friction wheels. Don’t forget to set the timing belts beforehand. You’ll use the longer belt at the top and the shorter one at the bottom.

Back to the friction wheels, one should be installed at the bottom of the frame so that it’s leading the frame. The other should be placed higher up, with the frame in front of it.

Overall, it should look something like an S-Shape. Make sure that there’s enough space between the two so that a tennis ball can fit.

Step 10

You’re ready to install the motor module now.

Step 11

Start with the synchronous belt wheels.

Step 12

The timing belt wheel can now be installed onto the shaft and linked up to the motor.

Step 13

Follow the same steps with the second motor module.

Step 14

When that’s done, the motors can be attached to the main frame. You’ll need to secure it with the motor brackets. Link the timing belts to the synchronous belt wheel before you screw the motors into place.

Each belt should be attached to a different motor, and the belts must be tight.

Step 15

It’s a good idea to secure the end of your motor output shaft. This step lends extra stability and ensures that it won’t shake loose easily.

Step 16

If necessary, adjust the timing belt’s tension by moving the bearing. It can now be fixed in place.

Step 17

To further stabilize the structure, run two support beams along the sides of the frame. These beams should be attached at an angle so that triangular shapes are formed between the original frames and these beams (get someone to hold the frame steady while you to do this).

Step 18

That concludes the construction of the support structure. Now it’s time to install the circuits. Start by welding the wires for the motor. Use a higher gauge wire and make sure to place a protective tube over the welds so that they don’t short circuit.

Step 19

The boards controlling the motor speed can now be installed. These boards will allow you to control up to a 10A current. For added stability, secure the circuit to some scrap wood or the acrylic board.

Step 20

You can now secure the sheet or scrap wood and the circuit board to the frame. Using the acrylic board is easier here because you just fit it into the threads of the two diagonal support beams that we used to reinforce the frame in Step 17.

Step 21

You’ll then need to splice together your power cord and attach it and the battery. Use a secure T-joint and make sure that the cord is connected to both edges of the circuit board. Check that all the connections between the circuit board and motor board are secure.

Step 22

You’re done. It’s time to test out your creation.

Final Notes

Building a tennis ball machine does require some expertise in electronics, but it’s not impossible. It could be a fun project to do with your kids. Or, if you’re not all that familiar with electronics, perhaps get the kids to lob the ball for you instead.

Best Tennis Workouts You Can Do at Home

A workout strategy plan is very important in almost every sport but can differ greatly depending on what attributes are most important for success in that sport. For an instance, a workout specifically for a football player should consist of muscle-enhancing activities which are specifically designed to build their lean muscle.

Tennis is different from the others

Likewise, good tennis players have their own set attributes that will allow them to excel at the game. Good footwork, flexibility, and a powerful swing are all important.

We would like to have that flexible yet stable support while having a good grip on the tennis racquet with enough power to hit the ball. When you see the pros on the TV it may not look complicated one, but the amount of preparation, exercise, and practice that each of the professional tennis players had gone through is incomparable.

A good workout regime is essential. A right mix of everything should be coordinated accordingly. Thus, a good workout plan especially structured for tennis players is recommended to be included in our routine. We’ll never know that we are close to reaching the most awaited Golden Set of our entire career.

But like everything else in the world, we have to work for our goal. Thus, sweating and practicing through workouts will help us in reaching our goal. Working out is a process that can never be sped up. We need to tune ourselves up in a right way and focus on it.

Abilities to focus on as a Tennis Player

Needless to say, it is important to know what we should develop and maintain, both physically and mentally, with these workout tips to prepare for the big game.

  • Speed
  • Agility
  • Endurance
  • Flexibility
  • Balance
  • Hand-eye coordination
  • Explosiveness
  • Ball judgment

Digging deeper into tennis

Generally, like other types of sports, it is also important to have enough speed to reach the ball with agility in an efficient manner. A flexible body influences the body to do Punch Volley in a fast-paced scenario while making the body keep up due to the endurance developed.

Balance, on the other hand, works both ways with the hand-eye coordination. Enabling us to accurately follow the ball, the body should act and at the same time maintain its balance in the right timing, place, and force.

Equally important is the ability to do explosive movements like sprints and leaps while having enough understanding of the pace estimation for that perfect jump smash. Deeply understanding the basics, we now go to the warm-up activity before the main workout itself.

Warm-up

Warming up the body before a strenuous movement is an utmost priority. Our high school teacher would even allow time for warm-up before the activity itself. With that being said, one should do this to avoid further injuries in the tennis court. Here are the highly suggested warm-up exercises:

  • Knee to chest walk
  • Alternating lunges including upper body rotation
  • Hip dynamic flex
  • Plank workouts
  • Wrist circles
  • Abdominal stretching with the use of a stability ball
  • Toe touch
  • Trunk/ body twist

Now, we’re ready to start our workout.

Good tennis workout guide

As aforementioned, a good workout should specifically focus on the said abilities accompanied by proper mental focus. Here is a great compilation of helpful workout guide to free the inner Andy Murray in us.

X-band walks

An X-band walk is done by stepping on a band on both feet that comes in either closed or open bands. We should step either side to side or forward depending on the band that is used. While both ends of the band are being held, remember to keep the elbows in a stable position. Each step will create tension with the band and further mold correctly the gluteal muscles.

Lateral band walks

This is done by placing a stretchable band at both feet while holding a Thera-Band on both hands. Both the bands at hand and feet should create tension by rotating the arms while elbows are at the same place and slowly stepping side to side. This is a great practice that also activates the gluteus medius.

Overhead slams

With the use of a medicine ball, we raise it over our head in both hands. Then slam the ball down with full force. This can be repeated up to 8 times which further develop the upper body explosive power beneficial to us.

Y raise

To do the Y raise, a person should stand in a squat position with both feet away from each other. Then slowly raise the two arms upward, forming a y shape. This maintains and strengthens the shoulders and is very important, especially for accurate ball hits while preventing injury.

Single leg squats

Single leg squats are fulfilled by holding two small weights with both hands while standing on one foot. Then, the hips move slowly downward until we are in a squat position. Do this several times on the left foot, then another on the right foot. This improves our balance and strength in our torsos.

Bench-Split Squats

Bench-Split Squats is done by standing in front of a bench while holding barbells in both hands. We should place one of our foot above the bench and slowly do squats as low as we can by flexing the knee and the hip. Do this while keeping the chest up and the core tight.

Ending the Tennis workout

After the workout, it is also advisable to do cooldowns. This is like a trigger in our body to say that we are ready to take a break with the exercise. Therefore, calming the muscles that were stressed upon the workout is a must. Also, having proper focus and mindset should be added in our preparation. The body should always be in coordination with our head.

Discipline is a must in every sport. Complementing these tips with a nutritional diet can lead our way to win the open competition.

How to Get Better at Tennis Without a Court

Unless you are fortunate enough to have your very own tennis court then there will no doubt be times when you can’t practice or train with the use of a court.

However, there are plenty of ways that you can train to get better at tennis without having access to a court. Here are some exercises, drills and diet tips to help you improve.

Start With Your Goals

Like anything, if you don’t have a clearly defined goal with your tennis game it will be very hard to produce the changes that you’d like to see in terms of results.

A good start to getting better at tennis is to write down three big goals you’d like to achieve with your game. Post your goals on your bathroom mirror or somewhere else you’ll see every day and this will motivate you to work hard to become the player you want to be.

Improving Strength & Fitness

Cardiovascular Fitness

Any amount of extra fitness activity will make your tennis game better. Tennis by itself is not enough to get you into the kind of incredible physical shape you need to be in to be great at the sport, it burns a relatively small amount of calories compared to more intensive sports and workouts and will not efficiently build the muscles you need to inject pure strength into your game. Lifting weights and push ups are two great options to build muscle and make you stronger.

The other reason why you should focus on getting into shape is to improve your stamina and fitness levels. The last thing you want is to be exhausted and too fatigued to continue playing, which is why your physical condition is so important when playing tennis. Going for runs and cycling are great ways to do some cardio to increase your fitness levels.

To start with, you can work on your cardiovascular fitness through running or cycling, which will improve your fitness in tennis games.

The fitter that you are, the better your game will become so this is one easy way to get better at tennis even without a tennis court. Your speed and endurance for running around the court is one of the biggest areas of your game.

Sprints

Short sprints are also good to practice; you can set up some markers that will incorporate sprints the width and depth of the court and different directions too, completing them in a circular routine.

Strength

Another big element of tennis is having good strength, to enable you to deliver fast serves and to return balls to the back of the court with pace.

You can work on your arm strength through weight training at the gym, or buy your own set of weights to work with at home.

Squatting

You should be eating healthy and exercising even if you’re not a tennis player. But if optimal performance is your goal, then squats are by the far the best bodyweight exercise to strengthen your legs and core muscles.

A great thing about squats is that they can be performed in the privacy of your own home, and without the need to use extra equipment.

Practicing Tennis Without a Court

Of course, you also need to be able to improve your racquet ability and (as well as investing in the best racquets) you can do this by improvising with your training environment, for example:

Serving

A large flat area of concrete or grass is perfect for practicing your serving.

You will need to measure out the relevant areas and if you have something to mark out the court like tape then you can practice your serves.

Ideally, you will want to be serving into an area that has a wall or something behind it so that you can easily collect your balls in and go again.

Returning Against a Wall

If you have access to use a large wall, you can use it to hit the ball against to improve your racquet skills.

You can move closer to the wall to improve your short game and further back to practice your back of court shots.

Swingball

You might remember swingball as a fun garden activity as a child but it is also a great way to practice your forehand and backhand shots in a small area.

If you are not familiar with the setup, it is basically a ball attached to a post that allows you to hit the ball to make it spin around the post. You can practice hitting it from one side to the other but you will want a high-quality one to get more out of it.

Master the Art of Split-Stepping

Just like the serve, the split-step is a vital part of your game that you should be constantly working on. You can do this in the comfort of your own home, preferably with your racquet for the added immersion and realism.

There are also ways of improving your game that doesn’t involve exercise in any way such as:

Reduce Foot and Heel Tightness by Rolling your Foot Over a Tennis Ball While Standing

This may come as surprising news, but using a tennis ball for a foot massage feels fantastic, relieves tension and is easy to use. You should start with one foot at a time, ensuring that you are rolling the ball all around the foot where you experience stiffness and pain.

If tennis balls aren’t your thing, then a foam roller works equally as well for the hard to reach places of your feet.

Online Courses

As with anything in life taking advice from people with experience and implementing that advice into your game can be a very powerful combination. There are many courses online that can help to make you a better tennis player just do a quick search.

One I can recommend personally is the PLB Tennis Academy: Turn Your Forehand Into a Weapon.

Watch Video Tutorials

Sometimes your game can see huge improvements by small tweaks to your techniques. From understanding the most effective grip for each shot, to how to get topspin on the ball, video tutorials will help you to develop your overall game.

There are many free videos on YouTube that will help you to improve your skills, including ones with former ATP pros and coaches.

Pick a skill that you want to improve and then search YouTube for one of the most-watched videos on that specific skill to get a high-quality tennis lesson without leaving your house!

Here are some good basic tips to improve your strokes:

Improve Your Diet

Like most sports, your diet has a large influence on your performance.

If you are carrying too much weight, for example, you will find it harder to get around the court or your stamina may be affected.

You need to have a healthy, balanced diet that provides a body shape that equips you best for playing tennis.

If you look at the pros, you will see a lot of muscle, particularly around the shoulders, arms and thighs. At the same time, you don’t want to have so much muscle that it slows you down.

Your diet can also be adapted to give you more stamina when you are playing in a match.

Some games can go on for hours, which is difficult to maintain energy levels without the right diet. You will often see tennis players eating bananas in the breaks between games for a quick energy boost.

Further Reading

https://racketsportsworld.com/practice-tennis-indoors/