Automatic Bubble Blowing Machine Using 3D Printed Parts

Hii friends in this instructables i will show you how you can make this bubble blower machine that is fully automatic and can blow bubbles at a rapid rate and the best part is this is made using 3d printed parts

Imagine a situation where you are at a party and manually using those outdated bubble blowers that need to be blown manually or in any other repetitive way

It is not just boring but also an inefficient way of approaching bubble blowing!

Why not make a simple device that can blow bubbles at a rapid rate and the rate of bubbles can be adjusted accordingly, How cool does this sound!

In this project i have made my imagination come to reality, i have made a lot of research on the design and shape before finally coming up with this final design

Well for time being i will go through in depth about those topics later, For now let me tell you what is this all about and why everyone reading this should give a try building this device

This blower can blow bubbles at a very fast rate and the speed of bubble generation can also be adjusted

Powered by 3 lithium ion batteries this blower can run for a longer duration and also you can add bubble liquid directly even when the device is running for non stop bubbles

If you are building this project you will have hands on experience about many topics like the 3d printing, electronic circuits and mechanism of working

By building this you will not only have a bubble blower but also a knowledgeable project that you have built by yourself, so what are you waiting for, let us build this together

These are the materials that you will need to build this project

Micro servo(modified)

DC motor PWM speed controller

Mini DC Fan

Battery case with switch

2 battery holder

Screw Driver set

3D Printer

PLA filament

Superglue

Bubble liquid or some liquid soap

Slicing software

Tinkercad(if you want to edit my model)

Time to build this!

The design was my favourite part of this project it took me quite a while to come up with this design but it was all worth it

I made the design for this bubble maker using Tinkercad even if you are new to this platform all things are handy and you can learn to make cool designs after few attempts

I made the pencil sketch first, i made the exact dimensions since we are dealing with wheel and the container that are circular in shape and at the time of working none of the part should touch each other

Later i made the designs on tinkercad and exported as STL

There was total 4 parts that i made and i have given designs of the 3 parts, last one was a simple parabola shape you can alternatively use square shape also, this was just to elevate the height of servo

After the models are explored to slicer make sure to use the same settings like i did, there was no need of using rafts or supports since we are not using any hanging parts

Follow the exact same placement like i did, the print time varies from printer to printer but the settings are same

Slice the models and save it on sd card and now we can head over to printing and see our digital files come to reality in matter of few hours

After the slicing is complete i will feed the gcode to the printer and with the yellow color PLA filament i will print the bubble maker wheel

The choice of color is dependent of individual choice in my case i thought these combinations would make the project look good

The print time for this part was around 30minutes in my case with 40%infill rate and the results came out really well

Body of this bubble machine was the longest part of project, It took more than 1 hour to print this part

Since we are not using any rafts or supports at the time of print, there is no need of any post processing work

But make sure there are no tiny web like structures inside this part since we have 2 different walls and when the printer moves here and there the web formation occurs

The other 2 parts you can either print or replace with some alternatives

Now we have the 3d printed parts ready we can head over to making the electronics part for this bubble blower

The servo that we normally use rotates to a limited angle of 180 degree but we need 360 degree of rotation

Now you may think why use this servo instead of a full rotating dc motor? the answer is simple the dc motor that rotates freely lacks sufficient torque and this servo has enough torque for our project

You may wonder what is torque and how it is different from RPM

Torque is the rotational force and the rpm is plain shaft rotation when you try to stop the motor with rpm it will stop but when you try to stop a motor with torque the shaft applies force and that we need here

Now back to the topic, How can i make the 180 degree motor to rotate 360 degrees, the answer is simple we have to remove the tiny obstacle inside the servo itself

To do this first remove the back panel of the servo by unscrewing them, now when you have access to top gear part you will find a gear with tiny hump at the base

Find that gear and remove it and put the gears back again, Next the wiring part

The servo by defualrt comes with 3 wires, remove one and leftover 2 we are soldering directly to the pins of servo

Put back the case and now test the servo for continuous rotation by connecting the battery to servo wires and this will power the bubble maker later

The circuit here is simple, we have 2 different set of circuit one is for the speed control of servo that control the bubble maker wheel

Other is the dc fan that is directly connected to battery and runs at full speed

Using screws connect this bubble wheel to the servo shaft and make sure that the bubble wheel rotates along with rotation of servo shaft

Connect the wheel to servo and the servo terminals are connected to the speed controller and the power pin from controllers are connected to the battery source note that here i will be using 3.7v battery source

When the knob is turned to clockwise the speed of servo should increase and in the opposite direction when knob is turned servo should slow down

After this test is complete, I will attach the servo the frame to do this i will add a small piece of 3d printed piece to adjust the height of servo

Here i suggest you to use superglue instead of hot glue and press firmly to join the 2 parts and get the most of glue

At this point we are done with half of the job now we can work on the air blower part

Imp announcement!

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I have made that support part for the fan taking the proper measurement and for best results you have to place in exact same place like I did

Use a drop of superglue to connect these 2 parts and once that is dry try to lift it and if everything is fine the support just holds up

Now to finish the project connect the power source, I will be adding the battery pack controlled via switch and that powers dc fan

The fan that I'm using is powered by 9v and i will be using 7.4v source, This power source is enough to run the fan at full potential

Glue the battery pack to the base of the bubble blower device, insulate the end with the help of hot glue and allow to dry completely

Turn on the blower and check for the air blowing quality and i bet that will be sufficient enough

Using this is a simple task all you have to do is fill the tank with bubble liquid

Dont know how to make bubble liquid? use 100ml of water and now pour 20 to 25ml of dish wash liquid and give it a gentle mix and now pour this to the tank

Start the blower fan first and then you can increase the speed of servo using the PWM speed controller

When you start seeing the bubbles and if you think you want more and more gently increase the speed of servo using the speed controller this will make the servo spin faster and then the bubble blower starts to make more and more bubbles

Avoid using this device in too much windy places even if you do make sure the direction of air blow is same as the air blower direction this will increase the speed even more and give good results

This is all about making and using this bubble blower, if you have any further more questions ask in the comments section, have a good bubble blower building! Bye and make sure to check out the video

Here is a detailed step by step instructions on building this bubble blower device, if you have any questions ask in the comment but make sure you have checked the video

Also let me know what is the most favorite part of yours in this bubble blower and do you think have you seen any better bubble maker than this?

I will wait for your answers in the comments section

Once again if you are willing to make or already made such project post it on the i made it section i will be happy to check it

Thisi is all for now, if you have any suggestions there is a discussion box that will help you out, Thanks and always be creative!