Compact Raspberry PI Server with Integrated UPS

This paper designs and implements a compact server system based on the Raspberry Pi 4B and tailored to specific low-end and budget-constrained environments, such as home offices and small businesses, through the integration of an uninterruptible power supply (UPS) in the system to ensure continuous operation during periods of power failure. Important features include VPN for secure remote access, an ad blocker to increase the efficiency of browsing, a private NAS system with data management in a secured and easily accessible manner, and video streaming capabilities to meet multimedia requirements. Real-time performance monitoring comes through with an OLED display. The paper reflects an integrated approach combining hardware and software components which stress system flexibility, low costs, and reliability. This compact server system allows an efficient, user-friendly, and flexible server infrastructure at small scale by providing a cost-effective alternative to traditional server solutions.