Microduio Digital Oscilloscope
The course will show you how to use Microduino to make a digital oscilloscope.
Here in this example, we’ll introduce a Microduino digital oscilloscope. Main parameters:
Frequency response： 10Hz-50KHz Power: 5V Microduino-OLED display screen: 128x64 Display area: 96x64 Message display area: 32x64 (Frequency of testing signal and Vpp.) Way of synchronization: Rising along the trigger Scanning speed: 0.02ms/div~10ms/div (Classified by nine gears according to 1-2-5 carry.) Hold Function: Freeze waveform display and parameters.
Step 1: Build the circuit according to the schematic, as follows:
Step 2: Download the code, compile and run initial screen:
Step 3: Just use sensing point to contact signal and input circuit, you will see waveform displayed on OLED:
Step 4: The three keys in the schematic are used for enlarging and reducing the scaleplate of the displayed waveform and served as “OK” button respectively.
Signal waveform can be displayed on OLED.