This project is a portable, dual-channel digital oscilloscope designed with an input signal range of ±10 V or 20V peak to peak. Its intended purpose is to be a portable, simple, durable, and low-cost signal visualization tool. It allows acquisition and display of analog signals up to 100kHz, making it suitable for audio, sensor, and general-purpose electronics work. At the center of the system is a Teensy 4.1 microcontroller, which handles fast analog-to-digital conversion and user interface data intake. The analog front end, based around a dual op-amp circuit features 10x attenuation when used with standard probes, op-amp buffering, and diode overvoltage protection. The user operates the oscilloscope through a single rotary encoder with an integrated button, enabling control of functions like trigger, pause, and scaling. Our accomplishments include achieving a stable dual-channel 200 kHz sampling rate, developing a proprietary analog front end that scales ±10 V signals to the acceptable 0-3.3V range for Teensy's ADCs, and creating a compact, 3D-printed enclosure. Key challenges involved tuning the Teensy’s ADC speed and protecting the microcontroller from overvoltage, creating a modular design, and meeting tight deadlines. Future improvements could include wireless connectivity, web server display, higher input voltage range, and a higher sampling speed.