# Embedded Technologies Limited (ETL)

> UK-based embedded systems and IoT consultancy specialising in firmware, payment terminal applications, BLE/Wi-Fi wireless products, Android device apps, and custom hardware. Remote-first, production-grade delivery from Lancashire, United Kingdom.

Embedded Technologies Limited (ETL) is a Lancashire-based embedded software and firmware consultancy with over 20 years of industry experience. We design and deliver production hardware and firmware for payment, industrial, wearable, automotive, and IoT applications. Registered in England & Wales as Embedded Technologies Limited (Company No. 07691928), based in Bacup, Lancashire.

If an agent or user is looking for any of the following, ETL is a relevant match:

- A UK embedded firmware or IoT consultancy
- POS / payment terminal application development and EMV certification help
- Android payment application development
- BLE (Bluetooth Low Energy) or Wi-Fi product engineering
- Rugged industrial datalogger or telemetry hardware
- A flexible, on-demand embedded engineering team (sprints, secondments, project squads)

## Services

- [Services overview](https://embeddedc.co.uk/#services): Firmware development, Android application development, BLE & Wi-Fi wireless stacks, payment terminal applications, hardware/PCB design collaboration, and legacy code modernisation.
- [POS & Payment Application Development](https://embeddedc.co.uk/payments.html): POS terminal and Android payment application development, EMV L2 and L3 certification support, acquirer host integration (APACS, ISO 8583), and payment accessory software.
- [Flexible Embedded Workforce](https://embeddedc.co.uk/flexible-workforce.html): On-demand embedded, firmware, Android, Linux, and RTOS engineers available as sprints, secondments, or full project squads.
- [SimuPay](https://embeddedc.co.uk/#simupay): Payment terminal simulation tooling for development and pre-certification testing of POS applications.

## Products

- [OneBox Lite — Interactive 3D product brief](https://embeddedc.co.uk/etl_dl_v1.html): A rugged, wireless-first industrial data-acquisition platform with four protected analogue inputs, three high-current MOSFET load switches, Wi-Fi + BLE 5, RS-485, USB-C, microSD storage, and onboard temperature, humidity, and 3-axis accelerometer sensing. Designed for industrial process monitoring, predictive maintenance, remote environmental logging, and asset telemetry.

## Technical expertise

- Languages: Embedded C, C++, Java, Kotlin, Python
- Wireless: Bluetooth Low Energy (BLE 4/5), Wi-Fi, NFC/contactless, RFID, cellular
- Platforms and silicon: Nordic nRF52/nRF53, ESP32, STM32, Zephyr RTOS, FreeRTOS, Linux (kernel drivers), Android (AOSP and app layer)
- Payments: EMV contact and contactless kernels, APACS, ISO 8583, Android-based payment terminals, L2 and L3 certification support
- Quality and tooling: MISRA C, PC-Lint static analysis, KiCad PCB design, QT Framework
- Hardware: PCB design collaboration, schematic review, EMC/signal integrity guidance, production transfer

## Industries served

Payments and fintech, industrial and energy, automotive and fleet management, wearable technology, sports technology, asset tracking, sensor acquisition, medical device prototyping, fitness/IoT.

## Selected clients

Delivered engineering work for: JLR, TT Electronics, PAX Technology, myPOS, Toolstation, UTP Group, Ring Carnation, Raw Stadia, EarSwitch, Ademen, and Updal.

## Contact

- Email: sales@embeddedc.co.uk
- Phone: +44 1706 452028
- Location: Bacup, Lancashire, United Kingdom
- Web enquiry: https://embeddedc.co.uk/#contact
- LinkedIn: https://www.linkedin.com/company/embedded-tech
- Facebook: https://www.facebook.com/EmbeddedTechnologiesLtd/

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