Embedded systems engineer focused on firmware development, hardware interfacing, and real-time behavior in resource-constrained systems.
I build end-to-end solutions across embedded C, Linux-based development, PCB design, and validation workflows.

Currently working on industrial Modbus TCP weight measurement firmware on STM32F4 with FreeRTOS, LwIP, and precision ADC interfacing for real-time load cell data acquisition and network telemetry.

Previously delivered a smart home automation system during an internship at Emertxe Information Technologies, covering sensor integration, cloud telemetry, and reliability-focused control logic.

B.E. Electronics & Communication Engineering

Relevant Coursework: Embedded Systems · Microprocessors & Microcontrollers · Digital Signal Processing · Computer Networks · Operating Systems · Digital Electronics

UART | I2C | SPI | Ethernet (RMII) | Modbus TCP | EtherCAT | Wi-Fi | HTTP | GSM | GPS

STM32F407 · FreeRTOS · LwIP · Modbus TCP · CS5551 ADC

Production-grade industrial weighing system firmware for real-time load cell data acquisition, signal processing, and network-based telemetry:

• STM32F407VGT6 (ARM Cortex-M4 @ 168 MHz) bare-metal firmware with STM32 HAL
• FreeRTOS multi-task architecture (5 tasks): ADC sampling, LCD refresh, Modbus server, button debounce, and network management with mutex/semaphore/queue synchronization
• CS5551 precision ADC driver (SPI, x128 PGA gain) with alpha-trimmed mean filter for ±0.01% measurement stability
• Modbus TCP server (port 502) on LwIP stack over Ethernet RMII (LAN8742 PHY) — holding register read/write for SCADA/HMI integration
• Log-structured flash EEPROM emulation (128 KB sector, ~1638 write cycles before erase) for non-volatile storage of calibration, network config, and operational parameters
• 6-digit multiplexed 7-segment display with 20+ level hierarchical menu system for runtime configuration (IP/subnet/gateway, calibration, filter settings)
• DMA-accelerated SPI transfers with ISR→task signaling via binary semaphores

STM32F4 FreeRTOS LwIP Modbus TCP SPI DMA CS5551 ADC Ethernet EEPROM Emulation Embedded C

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Emertxe Information Technologies · Sep 2024 – Nov 2024

End-to-end IoT solution with remote management and safety automation:

• Cloud control through the Blynk IoT platform
• LM35 thermal sensor-based automatic relay cut-off
• LDR-based adaptive lighting control
• Automated water-tank level sensing and pump control
• 16×2 LCD human-machine interface for runtime status

Embedded C ESP32 Blynk Cloud UART I2C Sensors

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Industrial EtherCAT Slave PCB Design

Professional PCB design for an EtherCAT slave evaluation board based on the Microchip LAN9252 controller with SPI host interface. The repository includes production-ready hardware deliverables for review and fabrication.

Highlights:

• EtherCAT slave controller based on LAN9252
• SPI interface for external MCU integration
• PCB design files prepared in EasyEDA
• Gerber package for manufacturing
• Bill of Materials (BOM) for component planning
• 3D PCB renders and layout documentation

EtherCAT Design LAN9252 SPI EasyEDA PCB Design Gerber BOM

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ESP32-CAM · PIR sensor · Telegram Bot API

Low-power, event-driven security system:

• PIR-triggered image capture on motion events
• Telegram bot-based image delivery to mobile in real time

ESP32-CAM PIR Sensor Telegram API Embedded C

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Raspberry Pi 5 · C · WiringPi · HC-SR04

Embedded C project running on Raspberry Pi 5:

• GPIO LED control with timing behavior
• HC-SR04 distance measurement in centimeters
• Distance-based adaptive LED blink logic

Raspberry Pi 5 C WiringPi HC-SR04 GPIO

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ESP32-CAM · C/Arduino Core · Telegram API

Network-based surveillance prototype:

• Wi-Fi live stream over local network
• Telegram bot integration for remote commands and alerts

ESP32-CAM C Arduino Core Wi-Fi

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ARM7 · NEO-6M GPS · SIM800L GSM · EEPROM

Embedded safety device for real-time location tracking and emergency response:

• GPS-based latitude/longitude tracking
• SIM800L emergency SMS and call triggering
• EEPROM-based emergency contact persistence

ARM7 GPS GSM EEPROM Embedded C

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C · Audacity · DSP

Pulse Code Modulation implementation in C:

• Custom waveform generation exported as raw audio
• Spectrum/timing validation in Audacity
• Circular buffer-based memory-efficient data flow

C DSP PCM Audacity

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2026 – Present · Gujarat, India

Developing production-grade industrial weighing system firmware on STM32F4:

• Designed multi-task FreeRTOS architecture (5 concurrent tasks) with mutex, semaphore, and queue-based synchronization for deterministic ADC sampling and LCD refresh
• Implemented custom CS5551 precision ADC driver over SPI with DMA acceleration and alpha-trimmed mean filter achieving ±0.01% measurement repeatability
• Built Modbus TCP server from scratch on LwIP stack (Ethernet RMII + LAN8742 PHY) for real-time weight data exposure to SCADA/HMI systems
• Engineered log-structured flash EEPROM emulation (128 KB sector, ~320 µs write latency) eliminating 1–4 second display freezes from sector erase operations
• Developed 20+ level hierarchical menu system on multiplexed 7-segment display with button debounce, runtime IP/calibration configuration, and password-protected settings

Sep 2024 – Nov 2024 · Hyderabad, India

• Designed end-to-end embedded IoT solutions (sensors → firmware → cloud)
• Developed reusable C drivers for peripherals and communication modules
• Performed unit testing and hardware-in-loop validation using PICSimLab
• Documented design decisions, tests, and results using SDLC-style workflows

• Embedded Linux: Character drivers, device tree, kernel modules
• RTOS: FreeRTOS multitasking on ARM Cortex-M
• HAL design: Reusable hardware abstraction layers for MCUs
• Embedded security: Secure boot, cryptography, OTA updates