LAB::Sarthak_Varchasvi

Defence Robotics · Underwater Autonomy · Space Systems

Sarthak Varchasvi

Founder & CTO of Blackvolt Technologies — building AUVs, counter-drone systems, and spaceborne sensors. Former intern at DRDO CAIR. Seven years of autonomous systems from first principles.

View systemsCollaboration protocol↗
[1]SLAM pipeline initialized
[2]multi-agent coordination active
[3]sensor fusion online
[4]localization stable
[5]planning horizon 5.0s

Perception · Planning · Control · Deployment

Featured systems

Robotics & autonomous systems

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System architecture
PerceptionLocalizationPlanningControlActuation
Active

Counter-Drone Multi-Agent Simulation

Multi-agent human-in-the-loop simulation for counter-drone operations in contested airspace — heterogeneous agent roles coordinated under communication degradation and partial observability. Developed under Blackvolt Technologies.

ROS 2GazeboArduPilot SITLPython
GitHub ↗Case study →
System architecture
PerceptionLocalizationPlanningControlActuation
Completed

3D Photogrammetry Pipeline — DRDO CAIR

Complete Structure-from-Motion pipeline for city-scale 3D reconstruction from drone imagery. Built during a DRDO CAIR internship under Dr. Sumit Veerwal — from manual SIFT implementation to Dockerised industrial pipeline.

PythonCOLMAPPyCOLMAPOpenCV
GitHub ↗Case study →
System architecture
PerceptionLocalizationPlanningControlActuation
Active

Autonomous Underwater Vehicle

Full-stack AUV development for maritime surveillance — targeting 150m depth, 30-day endurance, GPS-denied autonomous navigation using DVL odometry, IMU, and depth sensing. Under Blackvolt Technologies.

NVIDIA JetsonDVLIMUEmbedded Linux
GitHub ↗Case study →
System architecture
PerceptionLocalizationPlanningControlActuation
Completed

AQUABOT — River Cleaning Robot

Semi-autonomous surface robot collecting floating waste from rivers using a mesh trap and conveyor mechanism, with autonomous waypoint navigation and manual teleoperation fallback.

ArduinoEmbedded CMotor controlSensors
GitHub ↗Case study →
System architecture
PerceptionLocalizationPlanningControlActuation
Completed

High-Speed Autonomous Line Follower

Three design iterations over three years. Final iteration: PID controller at 600MHz on ARM Cortex-M7, custom ambient-light-immune IR sensor array, 4WD with differential encoder feedback for slip correction.

ARM Cortex-M7CPID ControlQuadrature encoders
GitHub ↗Case study →
System architecture
PerceptionLocalizationPlanningControlActuation
Completed

Micromouse Maze Solver

Autonomous maze-solving robot with Sharp IR wall sensing, rotary encoders, magnetometer with tilt compensation for accurate 90° turns, and Flood Fill optimal path algorithm.

Embedded CSharp IR sensorsMagnetometerEncoders
GitHub ↗Case study →

Interactive robotics systems

Live visualizations

Photogrammetry reconstruction viewer

Interactive reconstruction viewer demonstrating point-cloud based scene reconstruction from aerial imagery.

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Autonomous agent coordination

Visualization of coordinated multi-agent navigation with collision-aware path following.

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Research dashboard

Research & Internships

Mission log

Terminal feed

system_log :: key_milestones
[2017]first Arduino — started building things that move
[2019]qualified World Robot Olympiad nationals
[2021]AQUABOT — top 10 CBSE national science exhibition
[2022]1st place line follower — IIT Bombay Techfest
[2022]IBM AIM internship — drone-based afforestation system proposed
[2023]2× finalist Technoxian World Robotics Championship
[2024]B.Tech CS (AI & Robotics) — VIT Chennai
[2024]1st place micromouse — IIT BHU Technex '24
[2024]underwater robotics at Mafkin Robotics — Jetson Nano, ROS 2, actuator firmware
[2025]DRDO CAIR — 3D reconstruction from drone imagery, city-scale digital twin
[2025]ROSCon 2025 — NVIDIA Isaac Sim Lab + Unitree G1 Physical AI
[2025]founded Blackvolt Technologies — AUV + counter-drone simulation
[2026]Indian patent filed & published — IN 202641044300
[2026]CubeSat LEO mission proposal — AI-enhanced RF Earth observation

Recognition & IP

Achievements & Patents

Competition record

1st

MicroMouse Challenge

Technex '24 · IIT-BHU

1st

Meshmerize & CozmoClench Zonals

Techfest '23 · IIT-Bombay

Top 27 / 710

FinAgent Challenge

Techfest '25 · IIT-Bombay × Jio Finance

Top / 920

AWS ImpactX Challenge

Techfest '25 · IIT-Bombay

3rd

RoboQuest

ESYA '23 · IIIT-Delhi

3rd

IIC Regional Meet

MoE Innovation Cell

Top 5

Hack4Health

Perfint Healthcare · VIT Chennai

Top 10

RoboRun

Shaastra '25 · IIT-Madras

2× Finalist

Technoxian World Robotics Championship

'22 & '23

Nationals

World Robot Olympiad

2019

Intellectual property

Filed & Published

Omni-Directional Mobile Docking Robot

IN 202641044300 · April 2026

Application Filed

Autonomous Vision-Guided Robotic Arm Sorting System

Dual-parameter HSV classification

Application Filed

Multi-Threaded Warehouse Robot Task Allocation with RDBMS State Management

PostgreSQL + Python concurrent agents

Skills console

Technical capability map

Programming

  • Python
  • C++
  • C
  • MATLAB
  • Shell/Bash
  • JavaScript

Robotics & Autonomy

  • ROS 2
  • Gazebo
  • ArduPilot SITL
  • PID Control
  • SLAM
  • SfM Pipelines

Embedded Systems

  • NVIDIA Jetson Nano
  • Raspberry Pi
  • Arduino
  • ESP32/8266
  • STM32
  • Teensy

Hardware

  • LiDAR
  • IMU
  • DVL
  • IR/Ultrasonic Sensors
  • Encoders
  • Actuators
  • 3D Printing
  • Battery Systems

Software Tools

  • COLMAP
  • OpenCV
  • Meshlab
  • Docker
  • Fusion 360
  • Linux (Ubuntu)

Collaboration console

Initiate connection

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