Our project involves the development of a lightweight oscilloscope with PC control capabilities, tailored to assist in electronics projects that deal with small voltage measurements. This tool is particularly useful for both hobbyists who require an effective method to monitor and analyze electrical signals during the design and testing phases of circuit construction. At the heart of our system, an Arduino microcontroller interfaces with sensors for data acquisition, while the data collected is sent to a PC where MATLAB is utilized for processing and real-time signal visualization. This setup allows for plotting and analysis right on the user's computer. One of our most significant achievements in this project was the creation of an effective protection system for the oscilloscope’s input. By integrating an operational amplifier (op-amp), we developed a circuit that manages incoming signals and protects the device’s internal components from voltage spikes. We also implemented advanced features such as autoscale and a freeze function within the software, which enhance the user’s ability to perform detailed signal analysis by automatically adjusting the display to fit the signal and pausing the display for in-depth examination of specific data points. While we have successfully established fundamental functionalities and protective measures, future improvements could focus on increasing the sampling rate and resolution to accommodate faster and more precise measurements. Expanding the software interface to include a broader range of analytical tools like cursors and automatic measuring functions would also make the oscilloscope more versatile for handling complex diagnostic tasks.