Using STM32F103C8 and NT35702 2.4" TFT.
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README.md

STM32-Oscilloscope

STM32 Digital Oscilloscope using the STM32F103C8 MCU and the NT35702 2.4 inch TFT display.

Specifications:

  • One input channel
  • 2.57 Msps ADC, accepting signal frequencies up to 1.28 MHz
  • Calculates minimum, maximum and average values
  • Spectrum FFT analysis
  • Fundamental frequency detection
  • SD card export of signal wave shape and spectrum
  • Freeze function
  • Sampling rate selection

Further details on: https://www.gameinstance.com/post/80/STM32-Oscilloscope-with-FFT-and-SD-export