Full-Spectrum Embedded Systems & IoT Engineering Services
From precision bare-metal drivers to multi-layer PCB fabrication and secure AWS IoT fleets, Aarohi Tech Lab provides end-to-end design, development, bench testing, and production turnkey delivery.
Embedded Firmware & Real-Time Systems (RTOS)
Deterministic, ultra-reliable C/C++ firmware built for scale and zero field bricking.
Core Engineering Deliverables:
- FreeRTOS, Zephyr RTOS, and low-latency bare-metal architectures
- ESP-IDF native framework (ESP32, ESP32-S3, ESP32-C3/C6)
- STM32 HAL & LL drivers (ARM Cortex-M0/M3/M4/M7)
- Fail-safe dual-partition bootloaders and differential OTA updates
- Deterministic task scheduling, semaphores, mutexes, and zero-copy ring buffers
- MISRA C guidelines, memory leak profiling, and static code analysis
IoT Wireless & Industrial Field Connectivity
Robust multi-protocol wireless radios and ruggedized industrial fieldbus telemetry.
Core Engineering Deliverables:
- Nordic Semiconductor nRF52840 / nRF52832 BLE 5.0/5.2 development
- Custom Bluetooth GATT profiles, Long Range (Coded PHY), and Mesh networking
- Wi-Fi 802.11 b/g/n/ax with ESP-NOW fast peer-to-peer telemetry
- LoRa & LoRaWAN node implementations (Semtech SX1262 / SX1276)
- Cellular IoT integration: 4G LTE Cat-M1, NB-IoT (Quectel / SIMCom)
- Industrial Modbus RTU / ASCII (RS-485) and Modbus TCP over Ethernet
- CAN Bus 2.0B & CAN-FD for automotive and battery management systems
Cloud IoT Architecture & Secure Fleet Operations
End-to-end device-to-cloud pipelines with ironclad cryptographic security.
Core Engineering Deliverables:
- AWS IoT Core integration with MQTT over TLS v1.3 and X.509 client certificates
- ThingsBoard IoT platform (Community & Professional) device provisioning
- Hardware Secure Elements: ATECC608A / OPTIGA Trust integration
- Encrypted local storage with NVS encryption and secure flash storage
- Real-time bidirectional WebSockets and lightweight REST telemetry APIs
- Fleet-wide telemetry pipelines and automated anomaly alerts
Embedded GUI & Human-Machine Interfaces (HMI)
Silky-smooth 60fps touchscreen interfaces with modern user experiences.
Core Engineering Deliverables:
- TouchGFX development for STM32 high-performance microcontrollers
- LVGL (Light and Versatile Graphics Library) on ESP32 & ARM Cortex targets
- Capacitive and resistive multi-touch controller driver integration (I2C/SPI)
- Hardware-accelerated rendering (DMA2D / Chrom-ART) for fluid animations
- Multilingual font rendering, custom widget hierarchies, and dark mode themes
- Asynchronous decoupling of UI threads from real-time acquisition tasks
Hardware Engineering & High-Speed PCB Layout
Production-grade schematic capture, component engineering, and multi-layer PCB layout.
Core Engineering Deliverables:
- Altium Designer & KiCad multi-layer layouts (2 to 6+ layers)
- Controlled impedance routing for RF antennas and high-speed differential pairs
- Ultra-low noise mixed-signal routing (precision analog separated from digital)
- Strict Design for Manufacturing (DFM) and Design for Assembly (DFA) rules
- Thermal relief planes and high-current power routing for motor drives
- Comprehensive manufacturing deliverables: Gerber RS-274X, IPC-D-356, BOM, pick-and-place
Industrial Automation, Sensor Conditioning & Power
Mission-critical sensor instrumentation calibrated for extreme operating environments.
Core Engineering Deliverables:
- Precision RTD (PT100/PT1000) and Type-K thermocouple instrumentation amplifiers
- 4-20mA industrial current loop transmitters and 0-10V analog conditioning
- Battery Management Systems (BMS) with active balancing and cell monitoring
- Motor protection relays, phase loss, ground fault, and current signature monitoring
- Reverse polarity, over-voltage transient, TVS diode, and ESD surge suppression
- High-temperature enclosure engineering for kilns, ovens, and outdoor telemetry
From Concept to Certified Hardware in 4 Rigorous Stages
We eliminate hardware respins and firmware race conditions through systematic bench verification.
Discovery & Arch Review
MCU selection, power budget analysis, pinout multiplexing, memory sizing, and protocol mapping.
Schematic & Multi-layer PCB
Altium schematic capture, impedance matching, thermal design, DFM analysis, and BOM sourcing.
Firmware & Driver Dev
Bare-metal or RTOS drivers, state machines, communication stacks, and fail-safe dual-partition OTA.
Hardware-in-the-Loop Validation
Logic analyzer packet decoding, oscilloscope signal integrity, thermal profiling, and clean IP handover.
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