Issue with Enviro+ with RPi Zero: Display and particles not working

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21

I just setup a new Raspberry Pi Zero with an Enviro+ and had the issues above and this fixed it for me. Thanks

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22

In all cases, knowing the output of /proc/device-tree/model and gpioinfo (might need to sudo apt install gpiod) would be useful for adding explicit support for older Piā€™s.

I wonder if adding a row simply for Raspberry Pi copying the Pi 4 pins would work across all previous boards. Iā€™ve raised the pin-names-being-different-between-boards issue upstream with Pi and thereā€™s still some uncertainty about how to deal with that.

Sorry for throwing a curveball here. The switch to libgpio has beenā€¦ dicy. Trying to get it done right and trying to get it done fast are mutually exclusive. I had to take some time off over Christmas, but Iā€™m getting back on this now.

(was tipped off about this thread by a comment on Port to gpiod and gpiodevice Ā· pimoroni/pms5003-python@77d1e34 Ā· GitHub - thanks)

In all cases, GitHub is the best way to raise any issues, input, comments or join me in screaming into the void, currently there are a few relevant places for this tumultuous transition-

23

Hey all,

Like suggested here in this topic, I uninstalled newer versions of pms5003 and st7735 and installed specified versions but Iā€™m getting this error:

2024-04-08 22:33:00.458 WARNING  Main Loop Exception: PMS5003 Read Timeout: Failed to read start of frame byte

this line keeps appearing over and over and the lcd screen shows colorful grainy, noisy pattern. Using Zero W with Debian Bullseye (2024-03-12). Also tried it with Zero 2W and the result was the same.

I also tried sebgusā€™ way of modifying init.py in pms003 package but that method showed me another error on Zero.

Any progress on the fixes?

24

Withot a working software, this module is just paperweight.

I think Pimoroni requires this disclaimer on their product page: ā€œThe software package we put together doesnā€™t work anymore due to some changes in libraries and users required find a solution on their ownā€.

Because currently, under software headline, the wording create the illusion of a easy to setup & plug and play environment created by you, which is not true and is deceptive.

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25

Sorry to hear youā€™re still struggling!

Have you tried starting from fresh with a new image of Pi OS Bookworm and a fresh pull of the library? Weā€™ve now merged in all the updates to accommodate the new GPIO libraries and updated our Learn guide so things should hopefully now be in a less confusing state than they were back in April.

If youā€™re still having problems getting things working please let us know the exact text of the errors that youā€™re getting and weā€™ll see if we can help further.

27

Hi,

Yes, I noticed everything started to work just fine out of the boxā€¦until today. Today when I did a fresh install with my Zero 2W and 64bit Raspberry Pi OS Lite (bookworm) and tried to run one of the examples, I get this:

(pimoroni) cagan@enviro:~/enviroplus-python/examples $ sudo python all-in-one-no-pm.py
Traceback (most recent call last):
  File "/home/cagan/enviroplus-python/examples/all-in-one-no-pm.py", line 8, in <module>
    import st7735
ModuleNotFoundError: No module named 'st7735'

In fact, no matter which example I run, I always see an error about a library cannot be found:

(pimoroni) cagan@enviro:~/enviroplus-python/examples $ sudo python gas.py
Traceback (most recent call last):
  File "/home/cagan/enviroplus-python/examples/gas.py", line 6, in <module>
    from enviroplus import gas
ModuleNotFoundError: No module named 'enviroplus'

What could be causing it?

28

If you run the examples with sudo it probably wonā€™t pick up the right virtual environment - run them without sudo (as per the Learn article) and they should be fine.

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