Error on starting MM2: module not present
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I’m trying to run this module “MMM-Swipe”. After setting up the 2 ultrasonic sensors and setting the GPIO pins in the config.js file I had to run the MM2 via “sudo npm start”. But instead of running the MM2 freezes/lock-up. Nothing works anymore.
Turns out I get an error on the Swipe-module. It needs a module MMM.usonic to run. But it can’t be found. It’s not installed. And I can’t find it in the module list either.
Does anybody know how to solve this?
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hmmmmm…should have done this soner…
just googled for “mmm-usonic” and turns out its not a MagicMirror module but a npm module (https://www.npmjs.com/package/mmm-usonic)
I can install it via: “npm install mmm-usonic --save”
but in what folder must I install it?
Or wil it be installed in the correct folder anyway?
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@sdetweil Hahahahaha…euh…hehehe…found that just after I put my question up here.
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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?
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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.
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@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?
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npm --help should give you the options…
from MM,
npm rebuild MMM-usonic
