We have prototyped a custom oscilloscope that can gather input data using oscilloscope probes for two channels. It is designed to have robust BNC connectors to allow simultaneous or single channel readings. The data is then output to the screen of a computer running our Python GUI code on an Arduino Uno R4 Minima. It utilizes an external analog-to-digital converter (ADC) (ADS7853IRTER) with a sampling rate of 1 MSPS to convert the AC input signals to digital binary for the Arduino to read. This should effectively allow us to accurately analyze signals from 0Hz to 500kHz based on the Nyquist Rate calculation for 1 MSPS. We have implemented an AC input module for voltage biasing, AC coupling, and op-amp buffer amplification, as well as to set a minimum/maximum frequency to accommodate the constraints of our system. For example, the ADS7853IRTER is not rated to take in any negative voltage values so implementing the AC input module is a key part of our design. The ADC, AC input module, and BNC connectors are all on a custom PCB design we created. The custom GUI includes adjustable voltage and time axes. Some of the notable accomplishments we had with this project were learning PCB, GUI, and CAD design for each section required for our project.