Deepak Raghavendra Purohit

Sentinel Technology Project

• Developed a Python application that connects to a local MQTT broker, subscribes to topics, and handles authentication-based connections, disconnecting automatically on credential failure.
• Built multiple Docker containers simulating IoT sensors, each with unique functionality and static IPs for consistent network communication.
• Extracted MQTT payloads into InfluxDB, enabling efficient time-series data storage.
• Integrated with Grafana to visualize sensor data and monitor success/failure thresholds in real time.
• Enabled automatic flagging of anomalies across containers based on deviations from defined parameters.
• Tech Stack: Python, MQTT (Paho), Docker, InfluxDB, Grafana, Bash, Linux Networking

Cabin Secure Media Independent Messaging(CSMIM):

Implemented a client-server communication model allowing structured client requests and robust, scalable server responses aligned with modern networking protocols.

• Upgraded MQTT client from v3.1.1 to WolfMQTT v5, enabling support for advanced features in MQTT 5.0 essential for CSMIM protocol compliance and improved messaging reliability.
• Developed Central Data Services (CDS) for: Node registration and lifecycle management Real-time traffic monitoring Data logging and analytics Supporting centralized orchestration and telemetry across distributed systems.
• Built a secure Authentication Control HTTP Server to validate client requests based on node ID verification. Upon success, the server generated response payloads forwarded to the Wireless Transceiver Module(WTM) system for CSMIM-based operations.
• Tech Stack: C/C++, WolfMQTT, REST APIs, Embedded Linux, TCP/IP, HTTP Server, Data Logging, Distributed Systems

• Developed an HTTP server using Django to handle request-response communication with the Wireless Transceiver Module (WTM) for OTA updates.
• Established secure client-server communication between the Aircraft Interface Device (AID) (server) and WTM (client), enabling reliable remote interactions.
• Implemented an HTTP client on the WTM, enabling it to initiate and manage communication with the AID-hosted server.
• Gained hands-on experience with MQTT communication on AID and TFTP BOOT protocol during integration and testing phases.
• Tech Stack: Python, Django, HTTP Protocols, MQTT, TFTP BOOT, Embedded Systems, OTA Deployment