Khushbu Khandhar

• Designed and developed production-grade embedded firmware in C for industrial dock leveler and restraint control systems. • Led the full firmware development lifecycle, from requirements and architecture design to validation and production release. • Developed real-time applications using FreeRTOS, implementing task scheduling, queues, semaphores, and mutex synchronization. • Implemented interrupt-driven firmware and low-level peripheral drivers for UART, SPI, I2C, ADC, timers, and GPIO across STM32, PIC, AVR, and Renesas microcontrollers. • Designed RS485, LIN, and UART communication modules for distributed industrial control systems. • Performed hardware bring-up and debugging of custom embedded boards using oscilloscopes and firmware instrumentation. • Developed automated test benches and hardware-in-the-loop (HIL) validation systems to verify firmware functionality and production boards. • Investigated field issues and root-cause failures, improving firmware reliability and system stability. • Collaborated with hardware, mechanical, and manufacturing teams to support system integration and production testing. • Created technical documentation and manufacturing test procedures and trained production teams.

• Developed, built, and tested Bare-metal firmware. • Interfaced LCD with AVR microcontroller using SPI protocol. • Developed GUI for various applications. • Utilized state machine to simplify complex systems. • Configured external flash memory for data logging and recording. • Interfaced USB protocol with AVR microcontroller to download data to external USB drive. • Interfaced LORA module with PIC controller for sending data over the air. • Integrated GPS with PIC controller for tracking location. • Utilized Accelerometer for detecting inactivity and reducing power consumption. • Authored and revised functional requirements, test documents, and other documentation for embedded firmware features/changes. • Streamlined and modified existing firmware. • Experience in firmware development for data acquisition. • Proficient in version control software such as GIT and Tortoise HG. • Hands-on experience with debugging and testing equipment, including oscilloscope and multi-meter. Key Projects: •Smart Cooker: Configured predefined temperature protocols for the Smart Cooker, enabling lab technicians to achieve precise temperature control. In addition, I developed a GUI for the Smart Cooker's LCD, interfacing it via SPI protocol with the AVR 32. To ensure ease of access to important data, I also created a protocol for downloading log files from the previous run and exporting them to an external USB drive. •Smart Watch: Configured a watch on PIC microcontroller to track and send GPS data every minute using LORA module. Additionally, I utilized an accelerometer to detect movement for reduce power consumption and navigation of GUI.

• Demonstrated expertise in embedded C, Python, and Linux programming. • Developed a biometric system using Rabbit Controller. • Migrated the biometric system from Rabbit Controller to Renesas (ARM Cortex M4 processor) controller. • Troubleshot, debugged, and tested hardware and firmware issues related to the biometric machine. • Proficient in working with different IDEs, including Dynamic C and e2studio. • Developed, verified, and implemented firmware upgrades. • Designed firmware to establish communication between Mifare (Syncmos) card reader and Renesas controller using UART. • Interfaced Cypress touch keypad with Renesas controller using I2C protocol. • Implemented communication between RC522, external flash, and controller using SPI protocol. • Interfaced LCD with controller using SPI protocol. • Experience in multithreading, optimization, memory management, and interrupt handling. • Designed a C program to improve the quality of the image captured by the image sensor. • Upgraded and tested RD service devices used for fingerprint authentication. • Designed a system to report failures using GSM. • Expertise in using software such as Hercules, Hyper Terminal, Docklight, flash magic, and FTP. • Designed PCB Schematic using Diptrace and Eagle software. • Designed the layout of Printed Circuit Boards from schematic design. • Created new schematic symbols and footprints for new components. • Created a Bill of Materials (BOM) for PCB components. • Expertise in circuit analysis/debugging and PCB bring-up/debugging. • Provided technical support to clients and on-site engineers.

• Worked on scatternet based IoT project. • Designed PCB Schematic and board layout on Eagle. • Integrated Bluetooth low energy with Microcontroller STM32F. • Troubleshot, configured, and tested products. • Created and modified technical documentations.