Read the statement by Michael Teeuw here.
Error on starting MM2: module not present
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@mwel1977 if u are in the mm folder, it will be there unless u use -g (global)
Probably should be for the module trying to use the sensors
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@sdetweil I installed the mmm-usonic from the home/pi/ folder and I can see the mmm-usonic folder under /home/pi/node_modules.
And according to the error notification on starting the MM2 it is in the correct folder but it has something to do with it being compiled against a different Node.js version.
the module usonic.node was compiledagainst a different Node.js version using NODE_MODULE_VERSION 59. This version of Node.js requires NODE_MODULE_VERSION 57. Please try re-compiling or re-installing the module (for instance, using ‘npm rebuild’ or ‘npm install’).I did both rebuild and install but the problem isn’t solved.
Also I don’t know how to rebuild the module… don’t know what module they want me to rebuild as a matter of fact… the usonic module or the Swipe module? and in what folder in the terminal should I be in while rebuilding?
Must it be a specific folder or just any folder? -
Found something at: link text but got no idea what all that means.
I do think I need to delete the node_modules folder and rebuild the module.
But hope someone can help me with it by explaining what npm is.
and how the MagicMirror fits in it.
My guess would be that it is the overall driver and the the MM2 is working with this driver. but I’m not sure. -
@mwel1977 npm is the Node Package Manager. It makes sure all the env is right (read package.json), then launches node to execute the startup script.
You can code different actions, and then tell npm to execute that action.
foobar: some command
Then npm foobar will execute that command
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@sdetweil is npm then the compiler?
If so how can I recompile the mmm-usonic module so it works with my current Node.js version?
Is there somewere documentation on how this npm works and how all the modules are tide in it? -
npm --help should give you the options…
from MM,
npm rebuild MMM-usonic -
@sdetweil And do I have to be in a specific folder for this command (in the npm home folder or the mmm-usonic for instance)?
Or can I just type it in the terminal from the start (/Home/Pi/)?
That is what I still don’t quite get. What command must be used in what (folder) location.
But I’ll try that command tonight at home.
(I have my 3B+ with me here at work (that has the “working” MM2 on it. At home I have the Pi 3A+ attached to the 7" touchscreen and has the “test enviroment” of my MM2 on it. So when something works on the 3A+ (and I know how to do it right) I can do it first time right on the 3B+.:smiling_face_with_open_mouth_smiling_eyes: ) -
@mwel1977 well, you can be in many different places…
npm install (no other parms) will install the module in the current folder, so this could be MagicMirror (for all using modules), OR it could be in the MMM-Swipe folder only (then only available for MMM-Swipe)
or you can add -g parm, and regardless of the current folder, it is added to the system wide node_modules, so it is available for any/all applications that want/need to use it.
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@sdetweil may I ask you were you think that mmm-usonic module should be install in order for it to work with the mmm-swipe module?
Reading what your telling me I’m starting to think it should be installed in the MMM-Swipe folder. However the error notification shows that it found the mmm-usonic module only it’s compiled with a wrong version.I’ll try you suggestion “npm rebuild MMM-usonic” tonight and from the folder “/Home/Pi/” and see what happens (If I understand you correctly I can also use just “npm rebuild” when I’m in the folder “/Home/Pi/node_modules/mmm-usonic/”).
And I think I’ll start reading this after I’ve done that: https://docs.npmjs.com/ :grinning_face_with_smiling_eyes:
Hope I’ll know more about npm afterwards. -
where was it installed (check the MM/node-modules folder and the MM/modules/MMM-Swipe/node-modules folder…
rebuild where found…
