EKG Display in Processing

svan

Source code below demonstrates how to display an electrocardiogram in Processing using an Arduino UNO with an Olimex EKG/EMG Shield.  Images and reference are included.

https://github.com/vsquared/ECG_UNO_Processing

svan

Improved version:

https://github.com/vsquared/ECG_UNO_Processing3_2_3

jeremydouglass

@svan -- Thank you for sharing this!

Is this the specific shield for use with your code?

• https://www.olimex.com/wiki/Shield-EKG-EMG
• https://www.olimex.com/Products/Duino/Shields/SHIELD-EKG-EMG/open-source-hardware

svan

Is this the specific shield for use with your code?

Correct.

In the U.S. it may be purchased from Mouser or Digi-Key. You will also need passive electrodes or an ECG cable for use with adhesive electrodes (also available from above sources). Initial work was done with Arduino UNO.

If you already have an Arduino board, e.g. UNO or Leonardo, (not tried with others) the application may be tested by uploading the following sawtooth sketch:

unsigned long LoopTimer = 0;
byte outputValue = 0;

const int LoopTime = 20000;

void setup() 
{
  Serial.begin(9600);
}

void loop()
{
  if (micros() >= LoopTimer)
  {
    LoopTimer += LoopTime;
    outputValue += 4;
    Serial.write(outputValue);
    Serial.flush();
  }
}

Thank you for your interest and taking the time to look at it.