unable to install e-paper display, module epd2in7 not found

Question

I bought a 2.7inch e-Paper HAT,

I install everything but when I try to run a code I have

Traceback (most recent call last):
  File "demo2.py", line 1, in <module>
    import epd2in7
ImportError: No module named epd2in7

any idea how to fix that? To be fair I have no experience with raspberry hardware (just software) I just would like to display a clock

that the official https://www.waveshare.com/wiki/2.7inch_e-Paper_HAT

I also found a another one https://diyprojects.io/test-waveshare-epaper-eink-2-7-spi-screen-raspberry-pi-python/ but always have this epd2in7 error

Answer 1

The epd2in7 module is indeed available from the second tutorial you linked.

They ask you to run the following:

wget https://www.waveshare.com/w/upload/f/f5/2.7inch-e-paper-hat-code.7z

And extract the 7-Zip file with

7za e 2.7inch-e-paper-hat-code.7z

Then go to the raspberrypi/python directory:

cd raspberrypi/python

[Note: there is a typo in the tutorial as it asks you to cd /raspberrypi/python; if you did this, you would end up in a non-existent directory because of the leading / pointing to the root of the file system]

If you list the files in raspberrypi/python with ls, you should notice an epd2in7.py file among others. That is the missing module you were looking for. If you create and run your script there, it will work just fine (as the tutorial suggests you do). Alternatively you could add the directory to your PYTHONPATH so that you can resolve it in any directory.