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Latest digital oscilloscopes

Overview

This simple digital oscilloscope, based on the domestically produced GD32C8T6 development board, outputs an adjustable frequency and duty cycle square wave signal via the PWM output function of the development board's timer. Then, through the voltage follower, proportional amplifier circuit, and comparator frequency measurement circuit on the expansion board, it achieves input voltage amplitude detection, adjustable voltage sampling attenuation ratio, and frequency measurement. Finally, the data is displayed on a 1.8-inch TFT screen.

Design Files

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Update:2026-03-28 15:50:52

Please help analyze these two circuits.
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