Oscilloscope 0.96″ Arduino

What is an oscilloscope?

An ‘oscilloscope’, previously called an ‘oscillograph’, and informally known as a scope or o-scope,CRO (for cathode-ray oscilloscope), or DSO (for the more modern digital storage oscilloscope), is a type of electronic test instrument that graphically displays varying signal [voltages], usually as a two-dimensional plot of one or more signals as a function of time. Other signals (such as sound or vibration) can be converted to voltages and displayed.

Oscilloscopes display the change of an electrical signal over time, with voltage and time as the Y- and X-axes, respectively, on a calibrated scale. The waveform can then be analyzed for properties such as amplitude, frequency, rise time, time interval, distortion, and others. Modern digital instruments may calculate and display these properties directly. Originally, calculation of these values required manually measuring the waveform against the scales built into the screen of the instrument.

Oscilloscope made using the Arduino and OLED 0.96 “display i2c. The oscilloscope has 4 buttons: the first is used to switch between options, the next two are used to change the value smaller / larger, the fourth button freezes the measurement.

Main specifications

  •  Vertical sensitivity (full width value)
    Fixed range: 50 V, 20 V, 10 V, 5 V, 2 V, 1 V, 0.5 V, 0.2 V.
    The wave shape is available as large as possible.
  • Automatically adjusts the upper / lower limit value) ・ Level range (value per div, 4 div = full scale)
    50ms, 20ms, 10ms, 5ms, 2ms, 1ms, 500us, 200us
  • Rising / falling edge detection function.
  • Voltmeter function the voltage value is shown on the display (upper right corner).
  • Turning on the screen lock to keep the screen and then re-enabling the connection to release the lock. When paused, it appears on the screen as paused.

List Elements:

  • Arduino nano
  • Display 0.96″ i2c ST7735
  • 4x Diode Zener 3.6V
  • Resistor: 100Ω, 12kΩ, 120kΩ, 510kΩ
  • 4x Buttons
  • Capacitor 100nF
  • Wires
  • BreadBoard
  • Headphone jack slot
  • jack cable

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