➀ The article explains how four-color e-Paper displays work using charged particles in microcapsules, requiring no backlight and retaining images without power.

➀ It demonstrates a DIY project using a 400×168 e-Paper display with ESP32, AHT10 sensor, and RTC, achieving ultra-low power consumption (30 µA in sleep mode) for 2-month battery life.

➂ The project code integrates libraries for graphical control, with applications ranging from smart clocks to IoT signage, highlighting e-Paper's potential in low-power display solutions.

➀ Guangzhou Aoyi Electronic Technology and Shenzhen Jin Yatai Technology have begun mass production of a 31.2-inch color e-paper display.

➁ The display is said to overcome traditional e-paper limitations with improved refresh rates and response times.

➂ The technology is expected to find applications in digital signage and public information screens.