The examples in this guide are no longer supported. Please check out the Adafruit eInk Display Breakouts guide for CircuitPython and Python usage:
Everything compiled correctly, but I get no activity on the screen
The default driver compile is for a COG 1 (Computer On Glass, version 1). Your RePaper screen may be a COG 2.
You can check this my carefully lifting the display and looking on the back of it. Look for a barcode starting with "TEM" or "VEM".
If the seventh character of the barcode is 'B', then you have a COG 2. Follow these instructions for building the driver:

Raspberry Pi

make rpi-clean
make COG_VERSION=V2 rpi
sudo make COG_VERSION=V2 rpi-install
sudo reboot
After reboot make sure it is showing a "COG 2"
% cat /dev/epd/panel
EPD 2.7 264x176 COG 2
% echo C > /dev/epd/command

BeagleBone Black

make bb-clean
make COG_VERSION=V2 bb
make COG_VERSION=V2 bb-install
I can't get the eInk Display service to start on my Pi

This guide was first published on Dec 20, 2013. It was last updated on Dec 20, 2013.

This page (FAQ) was last updated on Nov 18, 2020.

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