Implementing SOLID principles for IoT Arduino sensor code

Performance, energy efficiency, and other run-time attributes are usually prioritized by stakeholders in the embedded software industry as evaluation metrics, which often results in a trade-off of maintainability, reusability and other design-time qualities. But the need for shorter maintenance cycles is becoming more and more important, as more IoT devices and systems get adopted. Object-oriented programming (OOP) SOLID principles are well adopted practices in software development projects in achieving design-time qualities including maintainability and reusability. Despite the fact that maintainability and reusability are the design-time qualities that drive embedded software refactoring, the absence of a standard embedded software framework results in redundant and wasted development effort. In this study, we apply OOP SOLID principles to implement selected sensors to create an open-source library. This work can help beginners to quickly get started with sensors, and also help embedded software developers to build highly scalable and maintainable systems.