4.2-inch E-Ink High Rate Refresh E-Paper 400x300 SPI HELTEC It uses an STM32F030F4P6 control

It uses an STM32F030F4P6 control solution and communicates with M5StickC through the I2C interface

This single-board computer supports 2GB

1 surround sound technology

2g Package size 170

4.2-inch E-Ink High Rate Refresh E-Paper 400x300 SPI HELTEC It uses an STM32F030F4P6 controlEPaper Display's Basic Function Refresh Method: Full refresh for 2sFast refresh for 1. 5sPartial refresh for 0. 3s4 grayscale refresh for 2s Display direction: Horizontal or vertical EPaper Display's Basic Parameters Product size: 4. 2 inch Resolution: 400x300 PPI: 119. 05 Color: Black and White Driver IC: SSD1683 Interface: SPI Operating voltage: 3. 3V Operating temperature: 0 50 Customization Front Light Available with front light or without,