Hiten Dharpure Nagpur: Hiten Dharpure is 17 years old. He studies at the School of Scholars in Nagpur. And he has just put his name in the Guinness World Records — for the third time.
His latest achievement is remarkable. He built the world’s smallest fully functional robotic arm. It measures just 39.25 millimetres. That is smaller than a standard AA battery. The previous record was 44.49 millimetres. Hiten broke it by 5.24 millimetres.
Guinness World Records officially confirmed this achievement on January 17, 2026. Furthermore, Union Minister Nitin Gadkari — who is from Nagpur himself — has personally honoured Hiten multiple times for his contributions to technology.
How the Tiny Arm Was Built
The robotic arm looks small. However, the engineering behind it is anything but simple.
Hiten (Hiten Dharpure Nagpur) designed the entire arm using Computer-Aided Design (CAD) software. He then built it using high-precision 3D printing. The printing method is called Fused Deposition Modelling or FDM. This process lays down material layer by layer with extreme accuracy.
The arm is powered by micro servo motors. These tiny motors give the arm its movement. In addition, a Pulse Width Modulation (PWM) module controls the arm with precision. As a result, the arm can move along three independent axes.
Most importantly, the arm can actually grip and lift small objects. It is not just a display piece. It is a fully functional piece of engineering. Therefore, this record is not just about size. It is about engineering a working machine at an almost impossible scale.
The Previous Two Records — Hiten’s (Hiten Dharpure Nagpur)Track Record
This robotic arm is Hiten’s third major international achievement. However, his journey to this point began earlier.
First, he set a Guinness World Record for building the world’s smallest AI weather station. That achievement showed his ability to miniaturise complex electronic systems. Then, the Worldwide Book of Records recognised him for choreographing a robotic dance sequence. He designed and 3D-printed all the robots in that sequence himself.
In addition, the India Book of Records recognised him for completing 801 STEM and coding certifications. That is an extraordinary number for anyone — let alone a teenager. Together, these achievements show a young innovator who is consistently pushing boundaries, not just once but repeatedly.
HastaVaani — The App That Helps the Deaf Community
Beyond record-breaking, Hiten (Hiten Dharpure Nagpur) is working on something with real social impact. He developed an app called HastaVaani.
The app translates Indian Sign Language — also known as ISL — into text and speech. Moreover, it works completely offline. This is a crucial feature for deaf users in areas with poor internet connectivity.
For India’s deaf community, communication barriers are a daily challenge. However, most assistive technology requires expensive devices or internet access. HastaVaani addresses both problems. It is designed specifically for Indian Sign Language, which is different from American or British sign languages.
Furthermore, developing an offline ISL translation app requires deep work in machine learning and computer vision. The fact that a 17-year-old from Nagpur built this — without a large team or corporate funding — is genuinely impressive.
What Hiten Said About His Record
Hiten has been clear about what this record means to him. He does not see it as a personal trophy. Instead, he views it as a demonstration of what accessible technology can do.
He said the record reflects the potential of local innovation. He believes that significant advances can come from grassroots initiatives. In other words, you do not need to be from Silicon Valley or have millions in funding. A student in Nagpur, with CAD software and a 3D printer, can build something the world has never seen before.
This message is important for young students across Vidarbha and Maharashtra. Innovation is not limited by geography. It is limited only by curiosity and commitment.
Gadkari’s Recognition — Why It Matters
Union Minister Nitin Gadkari has honoured Hiten multiple times. This recognition carries weight beyond a photo opportunity.
Gadkari is one of India’s most influential ministers. He has consistently championed local innovation — from ethanol fuel to self-healing roads. Therefore, when he publicly recognises a 17-year-old from Nagpur, it sends a signal to the country. It says that this student’s work is worth taking seriously at the national level.
In addition, Gadkari’s recognition gives Hiten access to networks and opportunities that are difficult for young innovators to reach independently. Ministerial attention often opens doors to government research funding, incubation programmes, and industry partnerships.
The Technology Behind the Record — Made Simple
Many readers may be unfamiliar with the technologies Hiten used. Here is a simple explanation of each.
CAD software is a computer programme that lets engineers design objects in three dimensions before building them. It is the same technology used to design cars, aircraft, and buildings. Hiten used it to plan every component of the robotic arm down to fractions of a millimetre.
FDM 3D printing builds physical objects by melting a thin filament of plastic and depositing it in precise layers. It is now widely available — even schools sometimes have 3D printers. However, using it to produce components accurate enough for a 39mm robotic arm requires skill and patience.
Micro servo motors are tiny motors that can rotate to very precise angles. They are commonly used in small robots and drones. In Hiten’s arm, they provide the movement for gripping and lifting.
PWM control is a method of controlling motor speed and position using electrical pulses. It allows very fine adjustments — which is essential when your arm is 39 millimetres long and must grip objects without crushing them.
Together, these technologies — all accessible to an informed student — produced a world record. That is the key message of Hiten’s achievement.
What This Means for Nagpur and India
Nagpur has produced remarkable achievers across many fields. However, Hiten’s story is notable even by that standard.
He is not a college graduate. He is not backed by a corporate lab. He is a 17-year-old student at a Nagpur school who decided to solve an engineering problem — and solved it better than anyone else in the world.
For India, this is the kind of innovation that the government’s Atal Innovation Mission and Startup India programmes were designed to encourage. For Vidarbha — a region that often sees its talented young people leave for Pune, Mumbai, Hyderabad, or Bengaluru — Hiten’s story is a reminder that world-class achievement is possible right here.
Moreover, his work on HastaVaani shows that he is not building impressive things just for the sake of records. He is using his skills to solve real problems for real communities. That combination of technical ability and social purpose is exactly what India’s innovation ecosystem needs more of.
What Comes Next for Hiten
Hiten is still 17. He has three international records, a sign language app, and recognition from one of India’s most powerful ministers. He is currently at School of Scholars in Nagpur.
His stated goal is to keep working on technologies that combine software and hardware to create positive social impact. In other words, HastaVaani is not his last social project. The robotic arm is not his last record.
Furthermore, as he moves toward higher education and professional life, the doors that these achievements open are significant. Top engineering institutions, international research programmes, and technology incubators actively seek students with this kind of record.
