Sayanti's Robotics Blogs

   Download Vagabond:  https://github.com/ NexusAurora/Vagabond Welcome to this exciting exploration into the world of SLAM—Simultaneous Localization and Mapping. Most people working on SLAM typically rely on Robot Operating System (ROS) and predefined libraries, using simulations instead of real-world scenarios. But we decided to take a different route. We believed that if we wanted to truly master SLAM, we needed to do it the right way—from scratch. Rather than using pre-built templates and libraries, which can be picked up at any time, we challenged ourselves to build a SLAM system manually. Now, we didn’t have the budget to buy a professional LiDAR sensor, which can be quite expensive, so we decided to create our own using a servo motor and a Time-of-Flight laser distance sensor. Along with that, we built a robotic car, calibrated the entire system, and coded the entire SLAM architecture by hand in pure Python. We didn’t stop there; we also used OpenCV t...

      Waste management has become one of the most pressing issues of our time, and innovative solutions are needed now more than ever. What if we could blend the precision of robotics with the power of AI to create a system that not only automates waste segregation but also bridges the gap between virtual simulations and real-world applications? In this documentary, we’ll take you behind the scenes of a groundbreaking project: the development of a 6-degree-of-freedom robotic arm designed for waste segregation, all simulated within the immersive environment of Unreal Engine. The journey began with the idea of creating a robotic arm that could mimic human movements with high precision. To achieve this, we focused on developing a 6-degree-of-freedom (6-DOF) system, allowing the arm to move in any direction, rotate, and grasp objects as efficiently as a human hand. But building this complex system wasn’t just about mechanics—it was about crafting a seamless int...

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 origina...

   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, ...

  I present to you the cheapest camera or object stabilizer in the whole world ! A 2-axis gimbal that keeps an object steady in a certain position despite the movement of the base on which it is mounted. This means when the base keeps changing its position constantly, the object will remain stable and there won’t be any change in its position. It all started with my new ADXL345 and I thought to myself why not try and build a hand-held gimbal at home since these things are rather costly out there. So, I fired up max and as usual started working on the digital prototype or the blueprint. I had a few servos left from the previous project that I worked on and two of them were enough for this simple stabilizer. And I have learnt from my mistakes ! Knowing that these servos won't be able to put up with so much, I designed the frame in a way that would fairly distribute the load away from the motor. With all this in mind, I roughly designed the whole thing and tried to make i...

  Previously, when we showcased our initial project at the national science fair, we presented "Armball Mania," a novel and intuitive sensor-controlled game. This project utilized an accelerometer connected to a compact Arduino Nano, with serial communication enabling the transfer of orientation data to an Unreal Engine game. The game's objective was to balance a ball on a football field and score goals by manipulating the field's orientation with the accelerometer mounted on a DIY glove worn by the user. The project was a hit at the fair in Kolkata, drawing long lines of enthusiastic students and children eager to experience the game. Despite the success, we encountered significant challenges with the accelerometer. The sensor's sensitivity to minute hand movements caused jittery and unstable outputs, making the gameplay less smooth and precise than desired. To overcome this, we decided to upgrade to a gyroscope. The gyroscope provided...