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HajjSalad/README.md

👋 About Me

Hi, I'm Hajj - a Computer Engineering professional with an Electrical Engineering degree and Computer Science minor from UBC. I specialize in building reliable, high-performance embedded systems that bridge hardware and software, from bare-metal firmware to Linux kernel drivers.

🛠️ Featured Projects

🎥 Raspberry Pi & Android Video Streaming System

C/C++ · Java · Linux Kernel · V4L2 · Android · TensorFlow Lite · HTTP · TCP/IP · Multithreading · POSIX Sockets
Built embedded Linux system processing continuous camera event streams with custom kernel driver, multithreaded producer-consumer pipeline, and on-device motion detection for real-time MJPEG streaming to Android clients.

🔧 Embedded Predictive Maintenance System

C/C++ · STM32 · Zephyr RTOS · Multithreading · Anomaly Detection · Factory Method · Circular Buffering · CMake
Developed multithreaded event processing pipeline with real-time statistical anomaly detection, implementing producer-consumer pattern with mutex/semaphore synchronization for deterministic sensor data acquisition across fleet deployments.

🚨 Smart Fire Detection System

C · STM32 · ESP32 · FreeRTOS · SPI · UART · Abstract Factory · CRC · Heartbeat Monitoring · Distributed Systems
Designed distributed monitoring system with fault-tolerant inter-node communication, implementing CRC validation and heartbeat monitoring to ensure reliable telemetry exchange in multi-node safety-critical architecture.

🌐 IoT Control & Monitoring System

C · STM32 · ESP32 · FreeRTOS · UART · PWM · ADC · AWS IoT · MQTT · Terraform · Wi-Fi
Developed endpoint monitoring system with edge devices streaming telemetry to AWS cloud, implementing event-driven firmware with threshold-based decision logic and bidirectional endpoint-cloud communication.

🚨 Custom Sensor Node PCB (Hardware)

KiCAD · STM32F446RE · Schematic Design · PCB Layout · Mixed-Signal Routing · Power Integrity · SPI/UART/I2C
Designed compact sensor board with integrated analog/digital sensors, implementing proper signal conditioning, power decoupling, and communication interfaces—complete with manufacturing documentation (Gerbers, BOM, assembly drawings).

🚦 Traffic Light Control System

C · STM32 · Bare-Metal · GPIO · Interrupts · FSM · Make · OpenOCD · Register-Level Programming
Implemented real-time traffic controller with finite state machine for deterministic signal timing, utilizing bare-metal firmware with direct register access for minimal latency and precise event handling.

🔍 What I'm Looking For

Opportunities to work on challenging embedded systems, real-time software, or systems programming projects with mission-driven teams.
💼 LinkedIn: https://www.linkedin.com/in/hajj-salad/
🔗 GitHub: https://github.com/hajjsalad
📝 Portfolio: https://hajjsalad.notion.site/portfolio-hajj-salad

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  1. STM32-Traffic-Control STM32-Traffic-Control Public

    Traffic Control System to manage 4 traffic lights at an intersection using a Finite State Machine (FSM), GPIO Inputs for car detection, and GPIO Outputs to drive RGB LEDs.

    C 1 1

  2. Smart-Fire-Detection-System Smart-Fire-Detection-System Public

    An advanced IoT-based Smart Fire Detector System using STM32 & ESP32 with UART, SPI, and MQTT cloud integration.

    TeX

  3. STM32-ESP32-IoT-Monitor-and-Control STM32-ESP32-IoT-Monitor-and-Control Public

    An ESP32 & STM32-based IoT system for monitoring environmental sensors and controlling devices. Collects sensor data, aggregates it locally, and publishes to AWS IoT Core efficiently, with Wi-Fi ma…

    C 1 1

  4. Embedded-Predictive-Maintenance Embedded-Predictive-Maintenance Public

    Real-time predictive maintenance system on STM32 with Zephyr RTOS. Multithreaded sensor data collection, circular buffering, and on-device anomaly detection for industrial equipment monitoring.

    C

  5. RaspberryPi-Android-Video-Streaming RaspberryPi-Android-Video-Streaming Public

    A Raspberry Pi and Android system for remote video capture, live streaming, and playback using V4L2, FFmpeg, and ExoPlayer

    Java

  6. Elevator-Control-Terminal-Based Elevator-Control-Terminal-Based Public

    C Implementation: A terminal-based project that simulates a 4-floor elevator control system. Input and output are managed via standard I/O

    C