Modern architectures of data acquisition and processing often consider low-cost and low-power devices that can be bound together to form a distributed infrastructure. In this paper we overview possibilities to organize a distributed computing testbed based on microcomputers similar to Raspberry Pi and Intel Edison. The goal of the research is to investigate and develop a scheduler for orchestrating distributed data processing and general purpose computations on such unreliable and resource-constrained hardware. Also we consider integration of the scheduler with well-known distributed data processing framework Apache Spark. We outline the project carried out in collaboration with Siemens LLC to compare different configurations of the hardware and software deployment and evaluate performance and applicability of the tools to the testbed.