A heartbeat simulator is for educational and testing purposes only. It is not a medical device and must not be used to diagnose or treat actual patients. Real ECG signals can be dangerous if misinterpreted. Always consult certified medical equipment for clinical use.
A filtered analog voltage (0–5V) that mimics an ECG signal. Add a 0.1µF capacitor between output and GND to smooth PWM ripple. heartbeat simulator
# QRS complex model (sum of Gaussians) def qrs(t_center, t): return 1.2 * np.exp(-((t - t_center)**2) / (0.01)) A heartbeat simulator is for educational and testing
Arduino Pin 9 (PWM) → 10kΩ → (output node) → 1kΩ → GND | 100nF capacitor to GND | Output to scope/ECG input heartbeat simulator
Heartbeat simulators have various applications in medical training, device testing, and research: