Breakout Wiring

Though it looks like a lot of connections, wiring up an eInk breakout is pretty straightforward! Below shows using hardware SPI to connect it to an Adafruit Metro M4.

• Vin connects to the microcontroller board's 5V or 3.3V power supply pin
• GND connects to ground
• CLK connects to SPI clock. It's easiest to connect it to pin 3 of the ICSP header.
• MOSI connects to SPI MOSI. It's easiest to connect it to pin 4 of the ICSP header.
• MISO connects to SPI MISO. It's easiest to connect it to pin 1 of the ICSP header.
• ECS connects to our e-Ink Chip Select pin. We'll be using Digital 9
• D/C connects to our e-Ink data/command select pin. We'll be using Digital 10.
• SRCS connects to our SRAM Chip Select pin. We'll be using Digital 6
• RST connects to our e-Ink reset pin. We'll be using Digital 8.
• BUSY connects to our e-Ink busy pin. We'll be using Digital 7.
• SDCS connects to our SD Card Chip Select pin. We'll be using Digital 5

Python Wiring

• Raspberry Pi 3.3 to display VIN
• Raspberry Pi GND to display GND
• Raspberry Pi SCLK to display SCK
• Raspberry Pi MOSI to display MOSI
• Raspberry Pi GPIO CE0 to display ECS
• Raspberry Pi GPIO 22 to display D/C
• Raspberry Pi GPIO 27 to display RST
• Raspberry Pi GPIO 17 to display BUSY