Contribution

Low-Cost Open-Source Real-Time Communication in Industrial IoT: Using the Raspberry Pi 5 with OPC UA over TSN

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Abstract

Industry 4.0 demands optimized industrial process control and enhanced data permeability, necessitating more capable edge-level hardware. While personal computers with real-time Linux operating systems offer ample computing power at low cost, they suffer from limitations in low-level connectivity, standardized compact form factors, and uncertain long-term supplies. This paper explores the Raspberry Pi 5 as a viable alternative, highlighting its excellent low-level connectivity, compact form factor, and guaranteed long-term availability until 2036. This study investigates the Raspberry Pi 5’s Performance in real-time communication scenarios using Open Platform Communications Unified Architecture (OPC UA) over Time- Sensitive Networking (TSN), a critical requirement for industrial applications. By outlining necessary modifications to the Raspberry Pi 5 and its Linux kernel, we enable real-time communication via TSN. Performance measurements in an OPC UA PubSub scenario are then compared with industrial PCs, highlighting the Raspberry Pi 5’s potential as an alternative edge device.

How to Cite:

Mandl, J. L., Saßnick, O. & Rosenstatter, T., (2025) “Low-Cost Open-Source Real-Time Communication in Industrial IoT: Using the Raspberry Pi 5 with OPC UA over TSN”, ARW Proceedings 25(1), 61-66. doi: https://doi.org/10.34749/3061-0710.2025.10