Human Heart Prototype by Using Node MCU for Education

Abstract

Educators face difficulties when teaching students about theoretical subjects especially in human anatomical and physiological subjects. The same goes for students where it is hard for them to understand about anatomical and physiological of the human system. This project aims to develop a human heart prototype using node MCU for education. The function of this prototype is to show the anatomy and physiology of the heart which will be controlled by an android smartphone. The type of blood that flow will be shown by red and blue watercolour. The red watercolour is oxygenated blood and the blue watercolour is deoxygenated blood. The Blynk application will show the display to the user whether the user will choose the type of heart rate or they will view the ECG signal of themselves by attaching the electrode to the body. The connection between the Blynk application and the project is using Node MCU ESP8266 as the IoT module. The ECG wave is displayed by Arduino IDE software at serial plotter. The signal is obtained from the human body by an ECG sensor. The stepper motor will show the movement of the heart. When the heart rate is at normal condition, the prototype will move at moderate speed. As the result, the heart prototype moves correctly according to the selection of the button in the Blynk application. The movement of blood flow also can be seen clearly from the prototype. Hopefully, this project will bring benefits to people especially educators and students.