Embedded Technologies Limited: Specialist Embedded Systems & IoT Consultancy, UK

What we do

Building an electronics product means hardware, firmware, and more often than not a mobile app — usually split across separate disciplines with no one who owns the full picture. ETL builds all of it. When something breaks at the seam, the same people who built both sides fix it.

01 / 06

electronics

Hardware Design

Every product starts with a circuit. ETL designs the electronics from system architecture and component selection through to schematic capture, with power budgets, signal integrity, and firmware requirements considered before anything goes to layout.

02 / 06

hardware

PCB Layout & Bring-Up

Once the schematic is locked, ETL takes it through PCB layout in KiCad, PCBA sourcing, and the hardware validation and bring-up that turns a bare board into something firmware can run on.

03 / 06

firmware

Embedded Firmware Development

Getting a chip to behave as the schematic intends, reliably, in the field. ETL writes bare-metal and RTOS-based C/C++ for ARM Cortex, ESP32, Nordic nRF, PIC, and Atmel silicon, from first power-on to production release.

04 / 06

linux

Embedded Linux & Driver Development

When the hardware needs more than a microcontroller can offer, ETL brings up embedded Linux, writes the kernel drivers, and configures the device tree so the OS and hardware understand each other.

05 / 06

wireless & iot

BLE, Wireless & IoT Systems

When the device needs to talk to a phone or report to the cloud, ETL handles the wireless layer: custom BLE profiles on Nordic nRF5340, cellular data pipelines, MQTT, and AWS IoT integration.

06 / 06

mobile

Mobile Application Development

The app is usually the part the end user sees. ETL builds native Android in Java and cross-platform apps in Flutter and React Native, written by the same engineers who built the firmware they connect to.

Technology stack

How we do it

Battle-tested across a breadth of embedded architectures, protocols, and development ecosystems.

Languages

Deep proficiency in systems-level and application languages. Our core strength is in embedded C/C++ for bare-metal and RTOS environments, complemented by Java for Android platforms, Python for tooling and test automation, and modern mobile languages like Dart for cross-platform work.

Technologies

Embedded C/C++JavaPythonC#DartJavaScriptAssembly

RTOS / OS

Extensive experience with real-time operating systems for deterministic embedded workloads. We architect task scheduling, interrupt handling, and resource management across FreeRTOS, Zephyr, and custom Linux builds, choosing the right OS for each project's latency, memory, and power constraints.

Platforms

FreeRTOSEmbedded LinuxZephyrNuttXTiny-OS

Hardware Platforms

Hands-on board-level expertise across ARM Cortex, Nordic, Espressif, and legacy architectures. From initial schematic review through bring-up, peripheral configuration, and production firmware, we work directly with silicon, not just abstractions on top of it.

Architectures

ARM Cortex M4/M7AtmelNordic nRF5340/5240ESP32Raspberry PiPICAmbiq

Protocols / Comms

Fluent in the full spectrum of embedded communication: from chip-level buses (SPI, I2C, UART) through industrial fieldbus (CAN, RS485) to wireless stacks (BLE, WiFi, MQTT). We implement protocol layers from scratch when needed and optimise for throughput, latency, or power as the application demands.

Protocols

BLECANSPII2CUARTRS485MQTTTCP/IPWiFiGPRS2.4GHz RF

Mobile

Native and cross-platform mobile development purpose-built to pair with embedded hardware. Our Android apps handle BLE service discovery and real-time data streams. Flutter and React Native projects extend reach to iOS while maintaining tight hardware coupling.

Frameworks

Android (Java)FlutterReact NativeiOS

Tools & Standards

Production-grade engineering demands proper tooling and compliance. We design PCBs in KiCad, enforce MISRA C for safety-critical code, and use static analysis tools like PC-Lint to catch defects before they reach hardware.

Tools

KiCadMISRA CPC-LintQT Framework

IoT Platforms

End-to-end IoT system integration connecting edge devices to cloud infrastructure. We build device-to-cloud data pipelines using AWS IoT Core, cellular connectivity providers, and MQTT broker architectures, handling provisioning, OTA updates, and telemetry at scale.

Platforms

AWS IoTTelenorMQTT Brokers

What we build

What we've done

Real-world engineering across industries: from sensor acquisition and wearable devices to vehicle systems and industrial IoT.

01 / 05

Industrial Sensor Acquisition

Bespoke fibre-optic enabled data logger for demanding sensor acquisition environments, feeding AI-based feature detection. Linux-based custom kernel drivers deliver high-accuracy sensor sampling on downwell toolchains with AI model integration.

Embedded C Linux Drivers Kernel Fibre Optic AI/ML Data Pipeline

02 / 05

Wearable & Fitness

Nordic nRF5340-based BLE transmitter/receiver with real-time SD card storage and optical + accelerometer sensors. ESP32 firmware reverse-engineered a BLE device profile for Zwift compatibility, paired with a custom Android BLE service app.

nRF5340 ESP32 BLE Zephyr Android Zwift Sensors

03 / 05

Automotive

ARM Cortex M7 in-vehicle ECU with CAN bus integration, FreeRTOS, and QT-based touchscreen keypad on Linux.

ARM Cortex M7 CAN Bus FreeRTOS QT Linux

04 / 05

Sports Technology

ESP32 IoT device measuring professional football pitch surfaces, with React Native mobile app and web platform sync.

ESP32 React Native IoT AWS

05 / 05

Tracking & Telematics

CAN bus RFID authentication device for forklift fleet management, trialled with a major UK logistics provider. Zephyr/FreeRTOS BLE asset trackers and environmental sensors extend the platform with cellular data sync.

CAN Bus RFID BLE Zephyr FreeRTOS Cellular Embedded C

About

Who We Are

Embedded Technologies Limited is a specialist engineering consultancy offering deep expertise across the full embedded product lifecycle. From initial hardware design and PCB layout through firmware bring-up, BLE/IoT integration, and mobile application development, we deliver production-grade solutions across industries including medical technology, sports performance, vehicle systems, and industrial IoT.

We work remotely and integrate seamlessly with client teams, whether the requirement is technical delivery, architecture guidance, or hands-on development from concept to certification.

30+ products shipped, 15+ silicon architectures (Nordic, ESP32, STM32, ARM Cortex), 20+ years of practitioner experience.

Embedded Intelligence. From Concept to Product.