- VCC: Power supply (3.3V or 5V) to power the display.
- GND: Ground
- DIN (MOSI): SPI data line for sending information from the microcontroller to the display.
- CLK (SCK): Synchronizes data transmission over SPI.
- CS (Chip Select, Active Low): Enables or disables SPI communication. When LOW, the display is active.
- DC (Data/Command Select): Determines whether the data being sent is pixel data (HIGH) or a command (LOW).
- RST (Reset, Active Low): Resets the display when pulled LOW and then HIGH. Essential for initialization.
- BUSY: Indicates whether the display is currently processing (HIGH) or ready to receive new commands (LOW).
| E-Paper Pin |
Wire |
ESP32 Pin |
| VCC |
|
3.3V |
| GND |
|
GND |
| DIN (MOSI) |
|
GPIO23 |
| CLK (SCK) |
|
GPIO18 |
| CS |
|
GPIO33 |
| DC |
|
GPIO17 (TX2 in Devkit) |
| RST |
|
GPIO16 (Rx2 in Devkit) |
| BUSY |
|
GPIO22 |