Foreword

This poor man oscilloscope is based on an excellent tutorial from Vassilis Serasidis. This is why this project is named after his, ardAnotherOscillo.

• Original version http://www.serasidis.gr/circuits/AVR_oscilloscope/avr_oscilloscope.htm
• Instructables version http://www.instructables.com/id/Low-speed-AVR-oscilloscope/
• For the viewer, one of my previous tool ARD_AnalogViewer

Purpose is to provide a windows PC displayable signal for low voltage (max 5V) and low frequency but cost/complexity cutting by using a windows application for design. (instead of using an embeded screen).

Edit: I decided to be no more poor man and bought this. Very good tool, however both are maybe complementary.
http://www.seeedstudio.com/depot/dso-nano-pocket-size-digital-storage-oscilloscope-p-512.html?cPath=11

Schema

Code

int potPin = 0;    // select the input pin for the potentiometer
int val = 0;       // variable to store the value coming from the sensor
 
void setup() {
  analogReference(DEFAULT);
 
  Serial.begin(115200);
}
 
void loop() {
  val = analogRead(potPin);    // read the value from the sensor
 
  Serial.println(val);
 
  delay(100);
}