Charan Velavan:)
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Projects›Nephele 2.0 – Interaction Robot
Bird's AINephele 2.05G Network Architecture & O-RAN ImplementationDEMSMiniaturized Dual-Mode Terahertz Bandpass FilterAI-Driven Converged 6G Network for Scalable UAV Swarm CoordinationWaterBot

Projects

7
  • Bird's AI – 5G Search & Rescue Drone

  • Nephele 2.0 – Interaction Robot

    ●Viewing now
  • 5G Network Architecture & O-RAN Implementation

  • DEMS – Domestic Emotion Monitoring System

  • Miniaturized Dual-Mode Terahertz Bandpass Filter

  • AI-Driven Converged 6G Network for Scalable UAV Swarm Coordination

  • WaterBot – AI-Enabled Robotic Trash Boat

Portfolio 2025
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Project

Nephele 2.0 – Interaction Robot

Nephele 2.0 is an intelligent, interactive robot developed under the AWS Cloud Club to enhance conferences and public events. Designed with a custom-built robotic body, precise motor control, real-time face recognition, and cloud-backed voice intelligence, Nephele delivers personalized, engaging interactions for attendees in real-world environments.

Talk with Nephele
1.0 → 3.0
Project Versions Led

Led development across three major iterations of Nephele

8+
Core Interaction Modes

Face recognition, gestures, voice commands, FAQs, selfies, QR attendance

500+
User Interactions

Unique conversational interactions across deployments

3 Robots
Fleet Size

Simultaneous coordinated swarm deployment

📸Project Gallery

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Nephele 2.0 – Interaction Robot - Image 1
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Nephele 2.0 – Interaction Robot - Image 1
Nephele 2.0 – Interaction Robot - Image 2
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🎬Project Media

Nephele 2.0 interacting with attendees at a live conference

Nephele 2.0 interacting with attendees at a live conference

Nephele 2.0 robot hardware
Custom-designed robot body with integrated sensors and display
Human robot interaction
Face recognition and voice-based interaction in action
Nephele 2.0 and Nephele 3.0
Nephele 2.0 and Nephele 3.0 side by side
Internal hardware setup
Stepper motors, Raspberry Pi 5, and internal hardware layout

👤My Role & Contributions

Project Lead – Hardware, Robotics & AI Systems

Key Responsibilities

  • •Served as Project Lead for the Nephele initiative across versions 1.0 to 3.0
  • •Designed the complete mechanical and industrial body of the Nephele robot
  • •Implemented stepper motor control and motor mapping using Raspberry Pi 5
  • •Handled hardware integration including motors, drivers, camera, display, and power systems
  • •Developed and optimized machine learning models for real-time face detection and recognition
  • •Built computer vision pipelines for human interaction and gesture-based input
  • •Worked on 5G-based connectivity concepts for inter-robot (swarm) communication
  • •Contributed to cloud engineering by integrating AWS services for speech and AI processing
  • •Collaborated with software and cloud team members to ensure end-to-end system stability
  • •Managed hardware testing, calibration, and live deployment during events

Technologies Used

Raspberry Pi 5Stepper Motors & Motor DriversPythonComputer VisionFace Detection & Recognition ModelsEmbedded Systems5G / High-Speed Wireless CommunicationAWS (Bedrock, Polly, Transcribe, Rekognition)Mechanical & Industrial Design

🏗️System Architecture

System Architecture Diagram

Click to zoom

Problem

Large conferences and public events face challenges such as limited attendee engagement, manual attendance tracking, lack of personalized assistance, and difficulty scaling human-operated help desks across large venues.

Approach

Nephele 2.0 combines embedded hardware control, computer vision, and cloud intelligence. A Raspberry Pi 5 manages real-time perception, motor control, and interaction logic. Stepper motors enable precise navigation, while camera-based vision supports face detection and gesture recognition. Machine learning models handle real-time face recognition. AWS services are integrated for speech recognition, natural language understanding, and speech synthesis, enabling seamless voice-based interaction. High-speed wireless (5G) connectivity enables coordination concepts across multiple robots.

Outcome

Nephele 2.0 successfully demonstrated reliable human–robot interaction in live conference environments. The system delivered personalized greetings, automated attendance workflows, and real-time question answering while maintaining stable performance. The modular design allowed smooth iteration from Nephele 1.0 to later versions, validating the architecture for future expansion.

Tech Stack

RoboticsEmbedded SystemsComputer VisionFace RecognitionMachine LearningStepper MotorsRaspberry Pi 55G ConnectivityAWSHuman-Robot Interaction
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Associated With

AWS Cloud Club logo

AWS Cloud Club

Partner

Associated With

  • AWS Cloud Club logo

    AWS Cloud Club

    Partner