This is an E-Ink display HAT for Raspberry Pi, 2.9inch, with embedded controller, communicating via SPI interface, supports partial refresh.
Due to the advantages like ultra low power consumption, wide viewing angle, clear display without electricity, it is an ideal choice for applications such as shelf label, industrial instrument, and so on.
VCC: 3.3 V to 5.5 V
DOUT: serial port data transmission
DIN: serial data reception
WAKE_UP: external arousal pins
RST: external reset pins