# Problem installing and running Inky Impression 7.3 examples
**URL:** https://forums.pimoroni.com/t/problem-installing-and-running-inky-impression-7-3-examples/26787
**Category:** Support
**Created:** [December 16, 2024, 3:21pm UTC](https://forums.pimoroni.com/t/problem-installing-and-running-inky-impression-7-3-examples/26787 "2024-12-16T15:21:22Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@EvAndyB](https://forums.pimoroni.com/u/EvAndyB)
#### Post date: [December 16, 2024, 3:21pm UTC](https://forums.pimoroni.com/t/problem-installing-and-running-inky-impression-7-3-examples/26787/1 "2024-12-16T15:21:22Z")
New inky impression 7.3 on a Pi 2W with fresh latest Raspbian lite install (no desktop).
Trying to follow instructions here
> **[GitHub - pimoroni/inky: Combined library for V2/V3 Inky pHAT and Inky...](https://github.com/pimoroni/inky)**
>
> Combined library for V2/V3 Inky pHAT and Inky wHAT.
OK, first off, after running ./install.sh the install bails with a message about an error building the wheel for Pillow. Looking further back I see something like "“The headers or library files could not be found for jpeg”
googling got me “by default, PIL doesn’t have jpeg support on the Raspberry Pi”.
So I did this :-
sudo apt install libjpeg62-turbo-dev
sudo apt install libjpeg9-dev
and then re-ran ./install.sh
This time it completed OK but when I answered yes about generating documentation I got a few traceback errors and then it announced it was all done.
Now I try set the virtual environment with
source ~/.virtualenvs/pimoroni/bin/activate
and change into the directory ~/Pimoroni/inky/examples/7colour
and run
./clear.py
And it bails with this
(pimoroni) pi@inkypi:~/Pimoroni/inky/examples/7color $ ./clear.py
Traceback (most recent call last):
File “/home/pi/.virtualenvs/pimoroni/lib/python3.11/site-packages/numpy/\_core/ **init**.py”, line 23, in
from . import multiarray
File “/home/pi/.virtualenvs/pimoroni/lib/python3.11/site-packages/numpy/\_core/multiarray.py”, line 10, in
from . import overrides
File “/home/pi/.virtualenvs/pimoroni/lib/python3.11/site-packages/numpy/\_core/overrides.py”, line 7, in
from numpy.\_core.\_multiarray\_umath import (
ImportError: libopenblas.so.0: cannot open shared object file: No such file or directory
(and another further exception in handling the exception too)
in fact, I eve get the above same exception traceback if I just fire up the python 3.11.2 repl and enter this one line :-
from inky.auto import auto
Any clues what I am doing wrong?
---
### Author:  [@EvAndyB](https://forums.pimoroni.com/u/EvAndyB)
#### Post date: [December 16, 2024, 6:50pm UTC](https://forums.pimoroni.com/t/problem-installing-and-running-inky-impression-7-3-examples/26787/2 "2024-12-16T18:50:51Z")
I also tried a fresh install of raspios image with desktop (not lite version this time) 2024-11-19.
The inky install works OK in that case but I still have issues with the examples.
The device overlay stuff was definitely done OK, and rebooted after.
But for example, when I run 7colors/clear.py I get this output…
(pimoroni) pi@raspberrypi:~/inky/examples/7color $ ./clear.py
Detected 7-Colour 800x480 (AC073TC1A)
/home/pi/.virtualenvs/pimoroni/lib/python3.11/site-packages/inky/inky\_ac073tc1a.py:285: UserWarning: Busy Wait: Held high. Waiting for 1.00s
warnings.warn(“Busy Wait: Held high. Waiting for {:0.2f}s”.format(timeout))
/home/pi/.virtualenvs/pimoroni/lib/python3.11/site-packages/inky/inky\_ac073tc1a.py:285: UserWarning: Busy Wait: Held high. Waiting for 0.40s
warnings.warn(“Busy Wait: Held high. Waiting for {:0.2f}s”.format(timeout))
/home/pi/.virtualenvs/pimoroni/lib/python3.11/site-packages/inky/inky\_ac073tc1a.py:285: UserWarning: Busy Wait: Held high. Waiting for 45.00s
warnings.warn(“Busy Wait: Held high. Waiting for {:0.2f}s”.format(timeout))
and the inky screen flashes different colours at random intervals.
If I hit ctrl-C to stop it then the screen flashes for several more seconds before settling all white.
Any idea what is going wrong?
(and I am still puzzled why the install did not work on 2024-11-19-raspios-bookworm-armhf-lite.img)
---
### Author:  [@EvAndyB](https://forums.pimoroni.com/u/EvAndyB)
#### Post date: [December 21, 2024, 2:40pm UTC](https://forums.pimoroni.com/t/problem-installing-and-running-inky-impression-7-3-examples/26787/3 "2024-12-21T14:40:40Z")
No-one?
I emailed support on 17th also but no response.
Did it just work OK for everyone else?
What Pi & OS version did you install it on?
Thanks
---
### Author:  [@Kypsis](https://forums.pimoroni.com/u/Kypsis)
#### Post date: [December 22, 2024, 8:31pm UTC](https://forums.pimoroni.com/t/problem-installing-and-running-inky-impression-7-3-examples/26787/4 "2024-12-22T20:31:10Z")
The screen flashing different colours is part of the updating process for e-ink displays.
That’s what the 40 second refresh time listed on the store page entails, it is functioning as intended.
Mine has been working fine on Zero 2 W with the Lite install of Rasbian, 64-bit.
It has been a month since I set it up, so my memory might be failing me, but I don’t recall having to get extra libraries besides running the install bash