# Subsea Signals — Full Content

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## About the Author

Anandhu Prakash is a software engineer transitioning into marine engineering and underwater robotics. He began freelance web development with Django in 2019, graduated with a BTech in Electrical & Electronics Engineering in 2023, and is now pursuing ROV (Remotely Operated Vehicle) training. This blog documents that journey — the challenges, learnings, and breakthroughs.

## Blog

Blog posts are published via WordPress CMS and cover:
- Marine engineering concepts and career transition insights
- Underwater robotics technology (ROVs, AUVs, hybrid vehicles)
- Technical deep-dives into embedded systems and AI/ML
- Project logs and build documentation

Visit https://subseasignals.com/blog/ for the latest posts.

## Portfolio Projects

### AI / ML

1. **Underwater Object Detection Model**
   Deep learning model using YOLOv8 for real-time detection and classification of underwater objects. Trained on 5,000+ annotated images, 87% mAP, optimized for NVIDIA Jetson edge deployment.
   Tech: Python, YOLOv8, PyTorch, OpenCV, NVIDIA Jetson

2. **Predictive Maintenance for Industrial Motors**
   ML pipeline using vibration sensor data (LSTM autoencoders + random forest) to predict bearing failures. Reduced unplanned downtime by 40%.
   Tech: Python, TensorFlow, Scikit-learn, Pandas, InfluxDB

### Embedded C

3. **STM32 Motor Controller Firmware**
   Bare-metal C firmware implementing Field-Oriented Control (FOC) for BLDC motor driving. CAN bus communication, PID loops, designed for underwater thrusters.
   Tech: C, STM32, FreeRTOS, CAN Bus, PWM

4. **ESP32 Marine Sensor Hub**
   IoT gateway collecting data from marine environmental sensors (temperature, salinity, pH, dissolved oxygen). Deep sleep power management for solar-powered buoy deployment.
   Tech: C/C++, ESP32, MQTT, I2C, SPI, Arduino

### PCB Design

5. **ROV Thruster Driver PCB**
   Custom 4-layer PCB for high-current BLDC ESC (30A continuous). Integrated current sensing, temperature monitoring, conformal coating pads. Designed in KiCad.
   Tech: KiCad, Power Electronics, DFM, 4-Layer

6. **Marine Sensor Interface Board**
   Signal conditioning PCB bridging industrial marine sensors (4-20mA, RS-485) to microcontroller inputs. Isolated power and ESD protection.
   Tech: KiCad, Analog Design, RS-485, 4-20mA, EMI

### System Design

7. **ROV Control System Architecture**
   Complete system architecture for an observation-class ROV: 48V power over tether, Ethernet communication, sensor integration (IMU, depth, cameras), and topside operator interface.
   Tech: System Architecture, Power Distribution, Ethernet

### Web Development

8. **Subsea Signals Blog**
   This website — Next.js 16 with headless WordPress CMS, marine-themed design, ISR, JSON-LD structured data, AI crawler optimization.
   Tech: Next.js, TypeScript, WordPress, Tailwind CSS, SEO
   URL: https://subseasignals.com

## Skills

**Software:** Python, TypeScript, C/C++, JavaScript, React, Next.js, Node.js, Django
**Embedded:** STM32, ESP32, Arduino, FreeRTOS, CAN Bus, I2C, SPI, UART
**AI/ML:** PyTorch, TensorFlow, Scikit-learn, OpenCV, YOLOv8, LSTM
**Hardware:** KiCad, PCB Design, Power Electronics, Analog Design, Signal Conditioning
**Marine:** ROV Systems, Underwater Sensors, Sonar, Navigation, Hydrodynamics
**DevOps:** Git, Docker, Vercel, WordPress, CI/CD

## Contact

Website: https://subseasignals.com
About: https://subseasignals.com/about/