Contribution: While research indicates usefulness of remote laboratories in teaching of digital hardware systems, their main application is to complement stationary classes. This work presents a low-cost, scalable architecture that supports rapid transformation of teaching to a model based solely on remote access mechanisms. Background: Adaptation of online laboratory solutions from the literature to en-masse teaching of digital circuits is time-consuming and expensive. Solutions that permit cheap and rapid conversion of courses to remote environments seem to be of high value, especially when social distancing renders direct teaching impossible. Intended Outcomes: Demonstration of a flexible and cheap architecture that permits rapid transformation of digital circuits laboratories to the remote environment. Validation of system’s performance and usefulness on a large group of students. Application Design: Remote digital circuits laboratories from the literature are designed to complement stationary classes. For successful teaching during pandemic, a low-cost, flexible, and efficient solution to online laboratory based on commonly available technologies is required. Findings: The proposed remote laboratory architecture enables rapid conversion of on-site teaching to online model, while supporting in-situ upgrades and functionality enhancements. The presented solution proved to be a convenient substitute for conventional laboratories during pandemic.

中文翻译：

---

应用基于开放硬件的解决方案，在疫情期间从固定教学模式快速过渡到远程教学模式

贡献：虽然研究表明远程实验室在数字硬件系统教学中很有用，但它们的主要应用是补充固定课程。这项工作提出了一种低成本、可扩展的架构，支持教学快速转变为仅基于远程访问机制的模型。背景：将文献中的在线实验室解决方案改编为数字电路的集体教学既耗时又昂贵。允许将课程廉价且快速地转换到远程环境的解决方案似乎具有很高的价值，特别是当社交距离导致直接教学变得不可能时。预期成果：展示灵活且廉价的架构，允许数字电路实验室快速转变为远程环境。对大量学生验证系统的性能和实用性。应用程序设计：文献中的远程数字电路实验室旨在补充固定课程。为了在大流行期间成功进行教学，需要基于常用技术的低成本、灵活、高效的在线实验室解决方案。研究结果：所提出的远程实验室架构能够实现现场教学向在线模式的快速转换，同时支持就地升级和功能增强。事实证明，所提出的解决方案可以在大流行期间方便地替代传统实验室。