Microduino Digital Oscilloscope

Purpose The course will show you how to use Microduino to make a digital oscilloscope. Source From: http://www.arduino.cn/thread-3703-1-1.html Equipment Module Number Function Microduino-Core 1 Core board Microduino-USBTTL 1 Program download Microduino-Cube-S1 1 For OLED connection Microduino-OLED 1 For display Other Equipment Electrolytic Condenser（100μ 25V） One Breadboard jumper One box micro usb cable One Button One Potentiometer（50k） One Breadboard One Introduction 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. Schematic Program [MicroduinoOscilloscope] Debugging 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. Result Signal waveform can be displayed on OLED. Video