How to make oscilloscope “OLED Display Step by Step

All details on: Oscilloscope made using the Arduino and OLED “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 nan