SunFounder ESP32 Starter Kit
Code
Note:
• You can open the file 5.6_transistor.ino under the path of esp32-starter-kit-main\c\codes\5.
6_transistor.
• After selecting the board (ESP32 Dev Module) and the appropriate port, click the Upload button.
• Always displaying “Unknown COMxx”?
Two types of transistors can be controlled using the same code. When we press the button, the ESP32 will send a
high-level signal to the transistor; when we release it, it will send a low-level signal.
• The circuit using the S8050 (NPN transistor) will light up when the button is pressed, indicating that it is in a
high-level conduction state;
• The circuit using the S8550 (PNP transistor) will light up when the button is released, indicating that it is in a
low-level conduction state.
82 Chapter 1. For Arduino User
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