Design and Implementation of a Low-Cost Portable Oscilloscope Using Arduino Nano

This work contributes a validated design and implementation of a low-cost portable oscilloscope using Arduino Nano and an OLED display, offering an accessible alternative to expensive laboratory instruments. By integrating signal conditioning, ADC conversion, embedded processing, and real-time visualization, the prototype demonstrates how microcontroller-based systems can effectively support educational experiments, basic circuit debugging, and sensor signal observation. The research highlights the feasibility of achieving waveform acquisition and display at low frequencies (~1 kHz) in a compact and inexpensive package, thereby bridging the gap between theoretical learning and practical measurement tools. It also establishes a foundation for future improvements such as faster sampling, improved triggering, and waveform storage, making it a stepping stone for further work in low-cost instrumentation and embedded measurement systems.