Authors - Monali Deshmukh, Payal Shete, Tanvi Pakhale, Pranjal Alhat, Krutika Salve Abstract - Because of their expensive price, large size, and reliance on lab settings, conventional oscilloscopes are inconvenient tools for signal analysis. They have made it necessary to have small, inexpensive, portable devices that can see waveforms outside of typical lab settings. The creation of a portable digital oscilloscope utilizing a 2.8-inch TFT display and an ESP32 microprocessor is detailed in this paper. Because of its autonomous operation, the gadget can record data in real time and display analog signals. Because it runs on batteries, the oscilloscope is affordable, lightweight, and portable. The ESP32 samples analog signals and displays them with user-controlled time-base settings. This oscilloscope has features including a grid display, waveform zooming, and freeze for convenience and readability. Both AC and DC signals can be monitored with an oscilloscope. According to tests, the device accurately displays common waveforms including sine, square, and sawtooth signals, which makes it ideal for embedded system development, simple troubleshooting, and instructional purposes.
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