There are only four components: an Arduino Nano, a DS3231 RTC module, a SSD1306 128×64 OLED module, and a momentary pushbutton.

They’re controlled by an Arduino Nano which has a built-in inertial measurement unit, allowing it to sense the angle the pipe is being held at as well as making determinations about its movement.

改完后点击生成代码。 OLED.c文件里，将 #define OLED_USE_SW_I2C 注释掉，将 #define OLED_USE_HW_I2C 取消注释，如果你用的是别的引脚作为I2C引脚，并且定义了别的名字那就将代码里的 I2C3_SCL 和 I2C3_SDA 也改一下。

The SparkFun Qwiic OLED Arduino Library is a single graphics module that supports all SparkFun OLED boards based on the SSD1306 from Solomon Systech. Prior to this library, three different libraries ...

A fully wireless and reusable red organic light-emitting diode (OLED) patch was developed as a noninvasive platform for skin wound phototherapy. The device integrates a USB-C rechargeable battery, a ...