A Blue Thing In The Cloud S.L.U. (ABTC) is an electronics engineering company based in Valencia, Spain. We help companies transform product ideas and existing prototypes into reliable, manufacturable electronic devices.

Our work brings PCB and RF design, embedded firmware, wireless connectivity and production support together under one technical team. Our core expertise includes embedded C and C++, MISRA-C and BARR-C-oriented firmware, Zephyr and FreeRTOS, low-power systems, Bluetooth Low Energy, Wi-Fi 6, UWB and RTLS, sensors, secure devices, bootloaders, OTA updates, hardware bring-up, DFM, DFT and product industrialisation.

ABTC is an official Nordic Semiconductor Design Partner and Qorvo UWB Partner. The company was founded by Javier Longares Abaiz, an electronics engineer with more than 20 years of professional experience developing electronic products.

We work with startups, SMEs and technology teams in Europe and worldwide, supporting projects from feasibility analysis and system architecture to prototype validation, certification support and production.

ABTC also publishes practical embedded engineering resources through its public GitHub repositories and YouTube channel.