DIY Contactless Mist Sanitizer


Today I'm going to show you how I turned a broken pocket mist generator into:

A Contactless Mist Sanitizer Machine 

in just one day. Sounds cool, right? Let's get started !



First, let me explain what a pocket mist generator is. It's basically a device that sprays a fine mist of liquid, usually water or sanitizer, to moisturize or disinfect your skin or surroundings. It's handy and portable, but mine stopped working after a few months of use. So I decided to open it up and see what's inside.

To my surprise, I found out that it doesn't use any heating element or pump to create the mist. Instead, it has a tiny diaphragm that vibrates at a very high frequency, around 100 kHz, and breaks the liquid into tiny droplets that form the mist. This is called ultrasonic atomization, and it's very efficient and quiet.

I wanted to control this diaphragm using my Arduino Uno, but I couldn't generate such a high frequency with it. So I had to use the original circuit board of the device, which has a button to turn it on and off. I removed the button and the battery and soldered some wires to connect it to the Arduino. Then I made a custom shield using some prototype boards and pin headers to mount everything on top of the Arduino.

The next step was to add an ultrasonic sensor, which can measure the distance of an object in front of it using sound waves. Sayanti helped me write the code while I connected it to the Arduino. When the code was ready, it triggered the mist generator whenever something comes close to it, like a hand or a face. This way, I can use it as a contactless sanitizer machine that sprays me with mist when I need it.


And that's it! I tested it and it worked like a charm. It's fun, easy and useful. And I did it all in one day, just before my exams. I hope you enjoyed this video and learned something new.

Additionally, to provide a visual representation of our journey, I have documented the entire process in a captivating YouTube video. You can find the video :

 

Join me as I walk you through the step-by-step transformation of the broken mist sanitizer into a state-of-the-art contactless sanitization marvel. Witness the ingenuity, problem-solving, and collaborative efforts that went into creating this innovative solution.

 

Comments

Post a Comment

Popular posts from this blog

Ball Game using Accelerometer & Arduino

Image
   Project Proposal PDF : Armball Mania Project Proposal I was recently experimenting with serial communication between Arduino and ue4 and suddenly had this urge to make a fun sensor controlled game . Something different and intuitive ! Now, I remember that I had the ADXL from my previous project which had become one of my favorite sensor ! - and I knew exactly what to do. I know, I know. Why am I using an accelerometer ! Using a gyro would've been a better idea. And you're right, That's the intuitive part !    The Arduino Part Before everything, I needed to test if it even works. So, I created a demo project, where I would control the pitch yaw and roll of a flat rectangular object with live inputs from the sensor which Will be in the users hands. Serial communication was a bit tricky. And I needed to open and close the ports dynamically so that I can change it on the go. After a bit of tweaking, I got it to work ! To summarize the protocol in English, ...
Read more

Crypto Trading Bot Development using Python, Multithreading, and PyTorch

Image
          1. A lightweight, file-based NoSQL database for Python projects, designed for easy setup and use in small-scale applications: https://github.com/ NexusAurora/PotatoDB-main 2. A versatile Python library that enhances your command-line output with colorful text, styled formatting, and easy-to-use logging utilities: https://github.com/ NexusAurora/UltraPrint Welcome to our latest update on a project that’s been two years in the making! Originally, our mission was to create an automated crypto trading robot—a behind-the-scenes genius designed to work tirelessly, effortlessly raking in profits. The idea was simple: minimize losses and maximize gains, giving us a steady net profit without lifting a finger. Fast forward to today, and we’ve breathed new life into this project with a more advanced and secure version. While the original bot was built with a rock-solid philosophy of avoiding losses at all costs—so safe that it promised you’d never lose...
Read more

Search and Rescue Deployable Assistant

Image
 The Project Proposal Objectives : The future calls for a safer, more efficient, and reliable habitable environment for everyone throughout the globe - an attack, accident, and disaster-proof infrastructure with zero casualties in such events. But if there are any, we need to have the technology and resources to combat such situations. SARDA is a deployable robotic unit intended to help first responders in such crucial situations to carry out search and rescue operations in dangerous environments.  When deployed into the disaster site, it helps to map and render a dynamic color coded 3D model of it's immediate surrounding along with data like temperature and humidity ; Which, not only aids the rescue team to better navigate the terrain but also informs us in case of fire and smoke along with it's exact location. This digital twin can also be overridden with manual control, providing us with an efficient two-way communication system. The Deploy-able unit : ...
Read more