Keyestudio ESP32 - Project 18: Beating Heart; 1. Description; 2. Wiring Diagram

ESP32 Starter Kit
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digitalWrite(buzz,HIGH);
}
else{
digitalWrite(red_led,LOW);
digitalWrite(buzz,LOW);
}
}
8.5.19 Project 18: Beating Heart
1. Description
In this project, a beating heart will be presented via an Arduino board, a 8X8 dot matrix display, a circuit board and some
electronic components. By programming, you can control the beating frequency, heart dimension and its brightness.
2. Wiring Diagram
110 Chapter 8. Arduino Tutorial