Automatic Teeth Brushing Robot

Hey Readers today I’m back with one
of the most interesting project which was never created by anyone before, in this instructables we will be making teeth brushing robot or robot that brushes teeth well as its an unique project still I couldn’t find perfect name that fits, soon ill come up with one!

Brushing your teeth daily is extremely important, as oral and dental health is directly linked to overall health.

Robot technology, human-centered design technology and system integration technology are all applied to this automatic toothbrush.

Brushing teeth has never been an easy task for most of us! This was the tagline which led to origin of this robot

At this point many might be struck thinking alas! What is he up to, I would say this is completely normal as this might be first ever thing you have come cross hence the statement, so what does it do?

This robot can brush your teeth like your normal hand does sidewise movements with brush in hand , Here one of best part is you can still continue your sleep while this will continue its task of brushing your teeth!!

Sounds cool and amazing right well its amazing as it seems, now let us quickly move on to building supplies that is required for our teeth brushing robot

Thanks NextPCB for sponsoring this project

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Thank you!

1. 3 stepper motors(2 big steppers and 1 small type)
2. Arduino mega
3. Geared dc motor
4. Joystick modules
5. Mini dc water pump
6. Few aluminum frames
7. Stepper drivers
8. 3d printed parts

Design for this project was made using solid works software I have made all the working parts for this project by designing by myself and then printing them

Some glimpses showing design phase of this robot parts can be seen below

Note: If you cant design I have them which you can buy readily Check here(https://shopmakerq.com)

Download STL file :- (HERE)

After the design was complete challenge was to print them as

these parts consumed me lots of time

After few stressful hours were complete I finally got my parts

What were the 3d printed parts?

Here I printed pulley for steeper motor and few supporting parts for holding brush and most importantly the toothpaste squeezer part

Thingverse has many deigns for toothpaste squeezer make sure to have a look on those

All the components along with 3d printed parts is given below

Yellow and red parts are printed rest were bought

Frame will be next stage of this

project to make this I used aluminum sliders which I found inexpensive and efficient for this project, lengthy piece will be used upon which parts moves as similar to extruder moving in 3d printer

As the length of this is long I couldn’t make any supporters which would fit in small space so the option was to set it up outside, I also think it’s one of best idea as in indoor it would be easier to setup that would avoid messier and consuming lots of living spacelike in indoor

Setup image which I found very effective is shown here

Walls on either sides work as
frame holder

1. Water supply

2. Brush movement mechanism

3. Toothpaste squeezing part

This is easy mechanism in our

project as it does nothing but does the job of supply of water which will be done by dc water pump

How to build this water supply mechanism

Water stored in small plastic

container that act as reservoir will be attached to frame to which water inlet port from DC water pump will be submerged as the motor switches to ON water will be coming out from discharge pipe ( pump water outlet). To avoid spill of water by any chance small plastic bowl was added

To switch on and off this motor receives signal from Arduino board which will be stated in upcoming steps

Main part of this project lies

here as this is responsible for cleaning your teeth even though it has many moving parts working mechanism is very simple which you can see from below image

This involves combined effort of

stepper and meal servo motor, stepper rotates this entire setup while servo aligns brush in proper way

Driving pulley of stepper motor was made big as to have quick movements

Gears from higher to lower reduction results in high RPM keeping this in mind pulley were connected across with belts

Servo horn was connect with brush as we often replace the brush I connected using zip ties which can be replaced easily

This completes or brushing mechanism

One main thing behind this mechanism is apart from just rotating this also slides and for this sliding mechanism other stepper motor which you can see that is placed near toothpaste mechanism is responsible please check upcoming step for image

This is final stage for our

hardware setup in this robot, here the working is very simple toothpaste squeezer requires twisting force from our hand but instead of hand we use power of DC motor which is geared that has sufficient torque for the purpose

So now we have all the hardware

setup complete for this project which means we can move onto software setup part

Software setup for this robot

Download Code (Click Here)

Arduino IDE will be used like usual to program this robot as we have all the motions that needs to be predefined an work in a sequence

Working of this robot

After all the coding part is complete robot is ready to use, as you are new here let me go through steps on how to use this

Stand in front of ultrasonic

sensor which activates the entire system toothbrush moves near water supply part where it gets washed first

Post of which go near watering

system and get some shots of water to rinse your mouth!

Later you can watch your robot
moving towards toothpaste squeezer in meantime you need to stand back near ultrasonic sensor area

Place your teeth in front of brush
and then it starts sliding mechanism horizontally that means your teeth is getting brushed first it takes car5e of right side followed by left side

After some time brush moves to
water area and get washed by itself after which its your turn to do same

After some time brush moves to

water area and get washed by itself after which its your turn to do same

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