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mandadapuherambeswar-ux/README.md

⚡ Herambeswar Mandadapu

Embedded Systems Engineer | Firmware & Edge AI Developer | Python Hardware Automation

LinkedIn GitHub Email Portfolio


Electronics & Communication Engineering graduate specializing in real-time embedded firmware, Python-driven hardware-in-the-loop (HIL) automation, low-power LoRaWAN architectures, digital signal processing (DSP / EKF), and automotive diagnostic stacks (CAN / ISO-TP / OBD-II).

🛠️ Technical Competencies

Microcontrollers & Hardware STM32 (ARM Cortex-M4/M3/M0) • ESP32 / ESP32-S3 • AVR ATmega328P • SX1276 LoRa • MLX90640 IR Array
Firmware, RTOS & Security FreeRTOS (Tasks, Queues, Mutexes) • Dual-Bank IAP Bootloaders • Bare-Metal Register C • MicroPython • STM32 HAL / LL
Automotive & Hardware Protocols ISO 15765-2 (ISO-TP) • SAE J1979 / OBD-II • CAN Bus (ISO 11898) • SPI • I2C • UART / USART DMA
Python Embedded & HIL Testbeds PySerial Automated Harnesses • Pytest Firmware Testbeds • CAN Telemetry Dashboards • Matplotlib Heatmaps
Wireless, DSP & Edge AI LoRaWAN Class A (ADR / Sleep) • Extended Kalman Filter (EKF) • TinyML Audio (MFCC + Quantized NN) • Quaternion Kinematics
Languages & Developer Tools Python 3 • Embedded C (C99/C11) • C++17 • PlatformIO • STM32CubeIDE • CMake / Make • Git • KiCad

🚀 Flagship Engineering Projects

🐍 Python-Powered Embedded & Hardware Automation

  1. PySerial-CAN-Diagnostic-Dashboard
    • Domain: Automotive Telemetry & Python GUI
    • Features: Live RPM/Speed gauges, SAE J1979 DTC scanner, strip-charts, and high-speed CSV logging with MCU CAN-to-UART bridge.
  2. PyHIL-Automated-Firmware-Testbed
    • Domain: Hardware-in-the-Loop Test Automation
    • Features: Pytest regression testbed with automated USB relay power-cycling, fault injection, buffer overflow checking, and watchdog recovery assertions.
  3. MicroPython-EdgeAI-Thermal-Camera
    • Domain: Edge AI & Thermal Imaging
    • Features: ESP32-S3 MicroPython firmware sampling an MLX90640 32x24 IR array with bicubic heatmap interpolation and hotspot anomaly alarms.

⚡ Low-Level Firmware, RTOS & Automotive Protocols

  1. BareMetal-ARM-CortexM-Driver-Library
    • Domain: Zero-HAL Bare-Metal Firmware
    • Features: Atomic GPIO (BSRR), fractional USART Baud Rate Generator (BRR), SPI master mode, and NVIC timing for ARM Cortex-M4.
  2. STM32-FreeRTOS-Telemetry-Hub
    • Domain: RTOS Multi-Tasking & IPC
    • Features: Multi-tasking FreeRTOS pipeline, mutex-protected I2C, CRC16-CCITT packet framing, and watchdog heartbeat supervisor.
  3. Automotive-CAN-OBD2-Diagnostics-Core
    • Domain: Automotive CAN Protocol Stack
    • Features: ISO 15765-2 (ISO-TP) multi-frame transport layer + SAE J1979 / OBD-II PID decoder & DTC error handler.
  4. LowPower-LoRaWAN-Environmental-Node
    • Domain: Ultra-Low-Power RF / IoT
    • Features: LoRaWAN Class A uplink stack with Adaptive Data Rate (ADR), microamp-level sleep duty cycling (2.2 µA), and 5-year battery life model.
  5. TinyML-Audio-Keyword-Spotter
    • Domain: Edge AI & Acoustic DSP
    • Features: 13-coefficient MFCC feature extractor feeding an 8-bit quantized neural network (<14 ms latency) on ARM Cortex-M4.
  6. Embedded-DSP-Sensor-Fusion-Kalman
    • Domain: DSP & Robotics
    • Features: Unit quaternion kinematics, gyro bias compensation, shock rejection, and 6-DOF Extended Kalman Filter (EKF).
  7. STM32-Secure-DualBank-Bootloader
    • Domain: Embedded Security & Firmware Updates
    • Features: Dual-bank A/B flash bootloader with CRC32 integrity check, automated rollback protection, and vector relocation (SCB->VTOR).

📜 Certifications & Credentials

  • 🏅 AWS Certified Cloud Practitioner — Amazon Web Services
  • 🏅 Tessolve Level 2: Industrial IoT (IIoT) Programming & Architecture
  • 🏅 Tessolve Level 1: Embedded Systems & IoT Fundamentals

📊 Profile Analytics & Activity

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Designed & Developed by Herambeswar Mandadapu • Vijayawada, India

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  1. Automotive-CAN-OBD2-Diagnostics-Core Automotive-CAN-OBD2-Diagnostics-Core Public

    Automotive ISO 15765-2 (ISO-TP) Transport Stack & SAE J1979 / OBD-II Diagnostic Core in Embedded C with Python HIL Test Harness.

    C 1

  2. STM32-FreeRTOS-Telemetry-Hub STM32-FreeRTOS-Telemetry-Hub Public

    Deterministic Industrial Sensor Telemetry Hub on ARM Cortex-M (STM32F4) using FreeRTOS, thread-safe I2C, CRC16 packet framing, and watchdog diagnostics.

    C

  3. BareMetal-ARM-CortexM-Driver-Library BareMetal-ARM-CortexM-Driver-Library Public

    Register-Level Bare-Metal Peripheral Driver Library (GPIO, SysTick, USART DMA) for ARM Cortex-M4 (STM32F4) with Zero Vendor HAL dependencies.

    C

  4. MicroPython-EdgeAI-Thermal-Camera MicroPython-EdgeAI-Thermal-Camera Public

    IoT Edge AI Thermal Camera & Anomaly Detection System on ESP32-S3 + MLX90640 (32x24 IR Array) with Bicubic Heatmap Viewer.

    Python

  5. PyHIL-Automated-Firmware-Testbed PyHIL-Automated-Firmware-Testbed Public

    Hardware-in-the-Loop (HIL) Automated Firmware Test & Regression Framework using Python, Pytest, and Relay Power-Cycling.

    Python

  6. PySerial-CAN-Diagnostic-Dashboard PySerial-CAN-Diagnostic-Dashboard Public

    Real-Time Python CAN-Bus Automotive Diagnostic & Telemetry Dashboard with Live Gauges, DTC Scanner, and Serial Logger.

    Python