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ESP32 WROOM Pin Name High Resolution
This post provides the pin name of ESP32 WROOM module and ESP32 DevKitC development board in high resolution and also provides the pdf file for download.

Control LED Brightness with ESP32 PWM
This article focuses on the ESP32 board's PWM capabilities, detailing key terms like TON, TOFF, period, and duty cycle, essential for understanding PWM applications and implementation.

SY8303 Synchronous Step Down Regulator DCDC Circuit Design
This post introduces the design of the DCDC chip SY8303 circuit, covering the schematic and PCB drawing processes, along with precautions and tips.

Bounce2 Library for Arduino Debouncing Made Easy
The Bounce2 library is a easy use tool for Arduino platforms, it will help us to solve the problem of erroneous states caused by the tiny vibrations of mechanical key switches when they are closed or opened.