Chillón Geck, CarlosCarlosChillón GeckNasr, RamiRamiNasr2024-10-212024-10-212024-09-1835. Forum Bauinformatik, fbi 2024: 91-98https://hdl.handle.net/11420/49586Internet of Things (IoT) technologies have reduced the need for manual labor in agriculture by facilitating the automation of irrigation processes. To automate irrigation, IoT-based irrigation systems consisting of low-cost hardware components have been proposed, aiming at optimizing irrigation and reducing overall costs. However, the design of IoT-based irrigation systems is based on adhoc solutions that lack scalability and integration capabilities. This paper presents a scalable smart irrigation system based on IoT technologies, developed using the OPC Unified Architecture (OPC UA). The system includes low-cost hardware components with embedded computing and IoT communication capabilities as well as an open-source IoT platform, which is validated in a laboratory test. The results of the validation test highlight the effectiveness of the scalable smart irrigation system in enhancing water resource management and operational efficiency.enhttps://creativecommons.org/licenses/by/4.0/Internet of ThingsOPC UAscalable systemsSmart irrigationTechnology::630: AgricultureComputer Science, Information and General Works::004: Computer SciencesTechnology::628: Sanitary; MunicipalTechnology::620: Engineering::620.3: VibrationsConference Paper10.15480/882.1349410.15480/882.13494Conference Paper