How to make Automatic Hand Sanitizer || Say" NO" to CoronaVirus || Arduino Project

[@viviendaso6077]

I tried making it for a school project and it works perfectly! This is one of the easiest Arduino UNO tutorials to follow. Thank you Science for U!

[@Science_4U_]

Thank you so much dear friend. Words of appreciation like these are the motivation to make more such projects and share with everyone. Thank you once again..😀❤️

[@venunuvvula5383]

Servo motor is rotating just somewhat not rotating fully to pump the santizer tomorrow is our submission pls reply what can we do now??

[@Science_4U_]

Hi friend..Don't worry..You can make the following changes in the code to change the rotating angle of the servo motor. Please find the below lines in the code.. for(pos=0;pos=0;pos--) { Myservo.write(pos); delay(15); 1. In the above codes 0° is the initial position and 20° is the final position of the servo motor. Increase the pos=20° to a higher number like 30° in both the 'for' commands to get more angle of rotation and hence more pressing of the arm.. 2. Also please find the command delay(15). That is the delay for each degree turn of the motor. Reducing the number will make rotation faster. You can type 0 to make the fastest rotation.

[@Science_4U_]

Please change the code accordingly and upload. Please see if this solves the problem..

[@venunuvvula5383]

Now it worked thank you so much 😊

[@Science_4U_]

@@venunuvvula5383 okay friend..happy to know that..🙂

[@shiopawww]

Thank you ❤​@@Science_4U_

[@TenTrillionMs]

how do i make the servo rotate more i am using the normal servo

[@TenTrillionMs]

pls help i need to submit tommorrow

[@Science_4U_]

@dxrkshadows Hi friend..Don't worry..You can make the following changes in the code to change the rotating angle of the servo motor. Please find the below lines in the code.. for(pos=0;pos=0;pos--) { Myservo.write(pos); delay(15); 1. In the above codes 0° is the initial position and 20° is the final position of the servo motor. Increase the pos=20° to a higher number like 30° in both the 'for' commands to get more angle of rotation and hence more pressing of the arm.. 2. Also please find the command delay(15). That is the delay for each degree turn of the motor. Reducing the number will make rotation faster. You can type 0 to make the fastest rotation.

[@sravanjyothi7631]

Hlo sir, I had made all the connection correctly sensor and motor are also new one. I had made the changes also in code but it is not working

[@Branded...]

Which gel is used to attach the components with sanitizer??

[@Science_4U_]

Hi friend. I have just used some handwash for the project. Sanitizer also will work. There are so many gel like sanitizers which will work best with this project.

[@Branded...]

Which gum (fevical) you used ?

[@Science_4U_]

@Branded... ooh..you mean gum..I first used normal glue gun and gluestick for sticking the components to the sanitizer. For the servo motor alone, Since large force acts on it, I applied some feviquick also..

[@Ki77mo66]

please. When I install, the servo moves four to five revolutions or more. What is the solution?

[@Ki77mo66]

I want to deliver it to the university on Wednesday

[@Science_4U_]

Hi friend. You are using a continous rotation servo. But you have to use a positional servo motor which can rotate only 180 degrees. Both infact looks the same so it is difficult to differentiate. Positional servo motor only remembers the reference and turns a fixed angle from reference point everytime command is given.

[@laurenlucero148]

Is there any way to make the angle of the servo motor for it to move more?

[@Science_4U_]

Yes friend..Sure!!!!..You can make the following changes in the code to change the rotating angle of the servo motor. Please find the below lines in the code.. for(pos=0;pos=0;pos--) { Myservo.write(pos); delay(15); 1. In the above codes 0° is the initial position and 20° is the final position of the servo motor. Increase the pos=20° to a higher number like 30° in both the 'for' commands to get more angle of rotation and hence more pressing of the arm.. 2. Also please find the command delay(15). That is the delay in milliseconds for each degree turn of the motor. Reducing the number will make rotation faster. You can type 0 to make the fastest rotation.

[@SakinaMazhar-l7q]

can we use servo motor sg 90 instead of mg 996g?

[@Science_4U_]

Yes friend. SG 90 is having less torque compared to 996g..sg90 will work ..but if sanitizer bottle needs to be pressed hard, then sg90 cannot give that much torque. So you can try with sg90 servo motor. If it is not able to press the bottle, then you have to use 996g..

[@AnshulBhaskar-q1i]

hi bro... can we use sg90 servo motor instead of mg996 servo motor?

[@Science_4U_]

Hi friend. You can use SG90 servo motor also. But its torque is way lesser than MG996 motor. MG996 motor produces 11 kgcm torque whereas SG 90 produces only 1.6 kgm torque, i.e. almost 7 times lower. So SG90 pushing force will be less, but it will just work I think.

[@SakinaMazhar-l7q]

does your soap dispense worked with servo motor sg 90 with the same arrangement or not??

[@hruthikanp6337]

If im running the code qith only a arduino uno. It is showing some error

[@Science_4U_]

Hi friend. What is the error that it is showing?

[@hruthikanp6337]

@@Science_4U_ hey it worked well, sry for the late reply. I presented well for my exhibition thankss

[@Science_4U_]

@hruthikanp6337 okay friend. Glad to know that it worked well for your exhibition..🥰❤️🙂

[@manadupavankumar4828]

I dont have an rocker switch in tinker how can I do can you pls reply

[@user-xv1fg7xy9m]

Hi, We have connected the components exactly like yours.. But the servo motor is not at all rotating...please give me some suggestions

[@Science_4U_]

Hi friend. Either the servo motor could be faulty or ultrasonic sensor may not be working correctly to detect your hand near it.

[@Science_4U_]

You have to test servo motor and ultrasonic sensor separately and find out which is having problem.

[@user-xv1fg7xy9m]

@@Science_4U_ can i replace the servo motor with sg90 ? Will that work?

[@Science_4U_]

@user-xv1fg7xy9m Yes sure friend. That will also work. If that servo motor is also not working, most likely the ultrasonic sensor is faulty. It is not detecting you hand and hence the sevo motor is not rotating.

[@user-xv1fg7xy9m]

@@Science_4U_ No we've checked the sensor.. it's working perfectly.. Still don't understand where the problem is.. we have tried to do exactly the way you have shown in the video..

[@eline_111]

hi, me and my friend tried doing this. We bought all the equipment needed and tried the code given, it did not pump. any suggetions on what to do right now?

[@Science_4U_]

Hi friend. Is the servo motor arm rotating when you are bringing your hand near the ultrasonic sensor?

[@Science_4U_]

Or is it just a pumping problem?. Like the arm is moving when hand is brought near the ultrasonic sensor, but the sanitizer is not coming out of the bottle?.

[@eline_111]

@@Science_4U_ yes.. it is the pumping problem. We tried many things... any solution for this??

[@Science_4U_]

@eline_3 Is the sanitizer coming out by pressing with hand. Normally it takes a few presses initially for the sanitizer to come out. Also, are you using just alcohol sanitizer which flows like water?. You can use some thicker alcohol based sanitizer fluids which will be easy to come out with a press. You can try with handwash also and see if that works.

[@eline_111]

@@Science_4U_ the sanitizer is coming out by using hand. thanks for the solution! it is liquidy...and we are using an ethyl alcohol based sanitizer

[@KimVlogOfficial]

sir what are the jumper wires? male to male / female to female or male to female, thankyou for response❤

[@Science_4U_]

Hi friend. I have use the following. 4 numbers male to female jumper wires for connecting ultrasonic sensor to arduino. 3 Nos. of jumper wires male to male for connecting servo motor to arduino.

[@junnieriss_9495]

hello , im working on this project for my school project and its working but why suddenly the servo motor didnt moving and just stay on the same position..please need help

[@paulaandreatupaz42]

Pls answer

[@NicoliAndina]

hi, we have constructed the device. but it is not working.

[@Science_4U_]

Okay friend. I guess the ultrasonic sensor is faulty. It is not detecting your hand and that is why it is not working. Is the sensor a new one or have you already used it before and working?

[@Foot_EditzX]

Hey bro can I make this with normal blue small servo motor

[@Science_4U_]

Yes friend. The blue motor that you are telling is an SG 90 servo motor. That will also work. I have seen many videos of similar project with that motor as well.

[@Foot_EditzX]

Thanks

[@laurenlucero148]

Will arduino uno r3 work as well?

[@Science_4U_]

Yes friend. Definitely. All the connections will be same.

[@ChrisJeanViernes]

Hi is there a specific Arduino Uno for this project? Because when I was trying to buy there is Arduino Uno DIP and Arduino Uno CH340G. I'm not quite sure which to buy.

[@Science_4U_]

Both will work friend..🙂There are only minor differences between them in term of speed. Also in DIP the chip is removable . But both boards are fundementally the same.

[@ChrisJeanViernes]

Thank you so much.

[@riddhipatil5618]

which software is required to run the code

[@Science_4U_]

Hi friend..It is called IDE software. IDE stands for Integrated Development Environment..it can be downloaded from internet for free..I will give the download link below.. www.arduino.cc/en/software

[@joeljaswanth6490]

bro that code is not working and Servo motor rotating continuously can you change the code

[@Science_4U_]

Hi friend. The code is correct only. Many have done this project also succesfully with this code. I think the servo that you have is a continous rotation servo. You need a stadard servo motor with around 180 degree rotation to work correctly. Both are different type of servo motors. You can search in internet..

[@4aidsmker172]

Heyy , i cant download the code link using wps office , which app can i download it?

[@Science_4U_]

Just goto google drive link and click on download button. The code will be downloaded to PC. Then you can use arduino IDE software for opening the code..

[@wahib_hussain1.]

Hi broo... coding preview is not available, what to do and how to do

[@Science_4U_]

You have to download the file friend, to your PC or laptop. Then upload the code to arduino using IDE software.

[@wahib_hussain1.]

For how many days till the battery will last till if there is 10 times of use in a day

[@Science_4U_]

@@wahib_hussain1. I think it will last atleast a month..

[@wahib_hussain1.]

How to get IDE software

[@Science_4U_]

@@wahib_hussain1. you can download from internet for free.

[@pxlxx2706]

Hey ! Thanks for the guidance. But i am facing a problem. When i connect the board with laptop, the code works perfectly fine and servo motor also rotates but when disconnected from the laptop and operated on battery only the servo motor does not rotate at all. Can you suggest what the problem might be?

[@Science_4U_]

Hi friend. It is definitely due to the battery not powerful enough to rotate the servo motor. When uno is directly connected to laptop, there is adequate power available from the UDB port. Hence no shortage of power and it works correctly. But when uno is disconnected from laptop, the board, sensor and servo motor has to be powered by the battery only. So if it is not powerful enough or discharged, it cannot rotate the servo motor. Servo motor consumes large amount of current during operation.

[@Science_4U_]

Which battery are you using friend?

[@pxlxx2706]

@@Science_4U_ i am using a 9V battery, the same as u used

[@Science_4U_]

@@pxlxx2706 hmm..okay friend. This 9V battery is good enough. But i think it may be discharged. Is it a new one that you are using?

[@pxlxx2706]

@@Science_4U_ Yes it is !

[@JulminJanudi]

Why can't I download the link for the Arduino Uno code? Can you drop the code for me?

[@Science_4U_]

Hi friend. Have you tried downloading code from the following mediafire link also? www.mediafire.com/file/r9jh7nd4nip6kga/automatic_sanitizer.ino/file

[@lc_electric]

Keep going bro ❤

[@Science_4U_]

Thank you bro..🥰💓👍

[@veergamer7434]

Can u list the components which are required to this ??

[@Science_4U_]

Hi friend. The list of items required and their purchase links too are given in the description box just below the video...🙂

[@shreyasvh6569]

Arduino code is not working pls send it

[@MuhammedWaqas-m7q]

The code isn't downloading what to do kindly tell me hurry tomorrow is my exam

[@Science_4U_]

Hi friend. Don't worry. I have uploaded the code in mediafire site also. Can you try downloading the code from the below link? www.mediafire.com/file/r9jh7nd4nip6kga/automatic_sanitizer.ino/file

[@shreyasvh6569]

Means it shows no preview available

[@Science_4U_]

Hi friend.. I didn't understand the question. What is the preview you are referring to?

[@shreyasvh6569]

Sir if we try to download the arduino code it shows no preview available

[@shreyasvh6569]

please send that Arduino code

[@Science_4U_]

@@shreyasvh6569 It will show no preview available. But there will be a download button also in google drive. By clicking on it, the file will get downloaded.

[@shreyasvh6569]

@@Science_4U_ there will be download button but once it downloaded I will make try to open it but file can't open that's would you plss send me the code

[@samyaksalve7626]

Sir the code is not working

[@Science_4U_]

The code is a tested and working one friend. What is the problem you are facing?

[@samyaksalve7626]

@@Science_4U_ The code file is not opening

[@redbarron3695]

Does this also work for lotion bottles? Asking for a friend

[@RavindraKumar-fd8xg]

can i buy this project

[@Science_4U_]

I am sorry friend. This is not available for sale..

[@funwithrakshanraj9262]

I didn’t get the code

[@Science_4U_]

The code will be small size only but will have an extension .ino

[@santoshgodawale-sy4ep]

Heyy can please share the diagram of connection

[@Science_4U_]

Yes sure friend. I made the circuit diagram now & it can be downloaded from the following link : drive.google.com/file/d/1TqooN2gKNmgrDdJC0sjF-hJeRgPpGmvY/view?usp=sharing

[@loktale6483]

Brilliant idea ❤

[@Science_4U_]

Thanks🙂

[@easy_notes19]

How i can download the code for it ...plz suggest

[@Science_4U_]

Hi friend, the code can be downloaded from the google drive link that I have given in the description section. Iam giving the link to download code below also.. drive.google.com/file/d/17qf--8l59exZo_DeykKACKy51wdMksMC/view?usp=share_link

[@JohnSmith-kc7fi]

How much did you take it to make this?

[@Science_4U_]

It took around 20 dollars to make this..

[@Science_4U_]

Arduino UNO board - 10 dollars.. Servo motor - 4 dollars Ultrasonic sensor - 4 dollars And other items like battery, switch and jumper wires - 2 dollars..

[@JohnSmith-kc7fi]

@@Science_4U_ thanks for this can you please name all the equipments you used in this project and how much time diit take to do it?

[@Science_4U_]

@@JohnSmith-kc7fi Yes sure. Please find below the items used for this project and the purchase links too. 1. Arduino Uno: amzn.eu/d/5IlDq9r 2. 9V battery: amzn.eu/d/34SPqIR 3. Servo motor MG 996 : amzn.eu/d/fcIwdMR 4. Ultrasonic sensor HC-SR04 : amzn.eu/d/8Qi1WuQ 5. Rocker switch : amzn.eu/d/1BBajCn 6. jumper wires : amzn.eu/d/7uemocG 7. Connector for 9V battery : amzn.eu/d/gXdNQt6

[@Science_4U_]

@@JohnSmith-kc7fi It is a rather easy project. It takes just 3-4 hours to complete this project🙂.

[@leejaj]

So useful👌

[@Science_4U_]

Thank you..🙂🥰

[@Criz-rd5ti]

hi can i have the code.pls

[@Science_4U_]

Hi friend. Sure. The code can be downloaded from the google drive link given in the description box below the video.

[@funwithrakshanraj9262]

Simply coming 1KB and not showing nothing

[@Science_4U_]

Hi friend..You can try downloading the code from the following links.. Link to Arduino code: drive.google.com/file/d/17qf--8l59exZo_DeykKACKy51wdMksMC/view?usp=share_link Alternate link to download code www.mediafire.com/file/r9jh7nd4nip6kga/automatic_sanitizer.ino/file

[@jayniv6345]

​@@Science_4U_ Link to arduino code : No preview available?

[@Science_4U_]

@@jayniv6345 No preview is available friend. You have to download it and then open in IDE software.

[@EDUARDOOMANDAM]

can i have the code?

[@Science_4U_]

Yes friend..sure.. The link to download code is already given in the description box below every video. I am giving links here also. Link to Arduino code: drive.google.com/file/d/17qf--8l59exZo_DeykKACKy51wdMksMC/view?usp=share_link Alternate link to download code www.mediafire.com/file/r9jh7nd4nip6kga/automatic_sanitizer.ino/file

[@VinKrishSolutions]

Super😊👌

[@Science_4U_]

Thank you..🙂🥰

[@hruthikanp6337]

Thanksss bro.

[@Science_4U_]

You are welcome dear friend..❤️🙂

[@funwithrakshanraj9262]

And l have project tomorrow

[@quicklookkarthik]

Innovative.

[@Science_4U_]

Thank you so much friend..💓🙂

[@larryhull2752]

Bro how many times are you gonna sanitize 😂😂

[@Science_4U_]

😂To ensure 100% disinfection😂😂