MSME-Certified Hardware Engineering Since 2019 — STM32, ESP32, ARM Cortex, LoRaWAN, FreeRTOS, PCB Design, Robotics — Prototype to Production Under One Roof
Core Competencies
Hexcode Plus is one of India's few dedicated hardware-centric R&D organisations — operating at the intersection of embedded systems engineering, IoT infrastructure, robotics, PCB design, and firmware development. Our Thiruvananthapuram laboratory has designed and deployed over 5,000 units across industrial, agricultural, medical, and automotive applications. Unlike software services firms that subcontract hardware work, we are practising engineers who design circuits, lay out PCBs, write firmware, and deploy sensor networks in-house. This is professional hardware engineering — from concept to manufacturing handoff under one roof.
Microcontroller-based system design, firmware development, and real-time operating system (RTOS) implementation. Proficiency in ARM Cortex, AVR, and PIC architectures.
Cloud-connected device ecosystems with edge computing, protocol implementation, and secure data transmission. Integration with AWS IoT, Azure IoT Hub, and private MQTT brokers.
Autonomous navigation systems, robotic manipulator control, and sensor fusion for mobile platforms. Integration with ROS (Robot Operating System) for advanced applications.
Multi-layer board layout with controlled impedance, signal integrity analysis, and EMI/EMC-compliant design. Boards fabricated and assembled to IPC standards.
Production embedded software: hardware abstraction layers, peripheral drivers, secure bootloaders, and over-the-air update pipelines built in C and C++.
Methodology
System specification documentation, constraint identification, feasibility assessment, and technical requirement gathering.
SPICE-level circuit modeling, component selection, power analysis, and signal integrity verification using industry-standard EDA tools.
Multi-layer board layout, impedance-controlled routing, thermal management, and design rule checking (DRC) validation.
Embedded software architecture, driver development, protocol implementation, and hardware abstraction layer (HAL) design.
Verified Outcomes
Documented outcomes from projects executed at our Thiruvananthapuram laboratory. These are not theoretical benchmarks — they are measured results from hardware deployed in the field.
Retrofitted 40+ legacy CNC and injection-moulding machines with ESP32-based sensor nodes monitoring vibration, temperature, and current draw. Data fed to a local MQTT broker with edge analytics, alerting maintenance teams before bearing failures or thermal overloads occurred.
Designed and deployed 200+ soil-moisture and microclimate sensor nodes across agricultural sites using STM32L0 microcontrollers and LoRaWAN. Nodes achieve multi-year battery life through aggressive duty cycling, deep-sleep power states, and adaptive spreading-factor selection.
Designed a 6-layer controlled-impedance PCB for a multi-channel ADC data acquisition system operating at 200 MHz. Achieved first-pass success with all signal integrity targets met — no board respin required. Included DDR3 routing, differential pair management, and split power planes with <1% voltage ripple.
Developed a cryptographically signed, dual-bank OTA firmware update system for an STM32F4-based portable medical diagnostic device. Firmware images are AES-256-GCM encrypted, RSA-2048 signed, and verified before committing to flash. Includes rollback protection and failsafe recovery.
Common Questions
Hexcode Plus R&D is an MSME-certified hardware engineering laboratory in Thiruvananthapuram, Kerala, founded in 2019. It designs embedded systems, IoT infrastructure, robotics platforms, custom PCBs and production firmware, taking hardware products from concept through prototype to manufacturing handoff.
Hexcode Plus operates two offices in Thiruvananthapuram (Trivandrum), Kerala, India: Comptron Arcade, Kallattumukku (695012) and South Road, Mudavanmugal, Poojappura (695001). It serves clients across India and internationally. Contact: info@hexcodeplus.com, +91 9633118080.
Five: embedded systems (ARM Cortex, STM32, ESP32, AVR, PIC), IoT infrastructure (LoRaWAN, MQTT, edge computing, AWS and Azure IoT), robotics engineering (ROS 2, SLAM, autonomous navigation), PCB design (multi-layer, controlled impedance, EMI/EMC to IPC standards) and firmware development (embedded C/C++, FreeRTOS, bootloaders, OTA).
Both. Hexcode Plus works with hardware startups taking a first product from concept to manufacturable design, and with established manufacturers retrofitting IoT monitoring onto existing equipment. Engagements range from a single subsystem to full product development.