MMM-usonic Problems

[sgarg15]

Hey guys,

So i am trying to get my ultrasonic sensors to work and i found this module and i was wondering if anyone has had luck trying to get this module to work
https://github.com/mochman/mmm-usonic @mochman
Because after following the steps i run the MagicMirror and bunch of errors show up. So if you got this too work please let me know

Thanks

[sdetweil]

@sgarg15 what errors show up?

[sgarg15]

@sdetweil
so rn i did the install in the /home/pi/node_modules and i put this in my MMM-Swipe node_helper.js file. (var usonic = require('mmm-usonic'); )

So then when i run the MagicMirror using npm start these errors show up

home/pi/MagicMirror/node_modules/electron/dist/electron: symbol lookup error: /home/pi/node_modules/mmm-usonic/build/Release/usonic.node: undefined symbol: _ZN2v816FunctionTemplate3NewEPNS_7IsolateEPFvRKNS_20FunctionCallbackInfoINS_5ValueEEEENS_5LocalIS4_EENSA_INS_9SignatureEEEiNS_19ConstructorBehaviorENS_14SideEffectTypeE
npm ERR! code ELIFECYCLE
npm ERR! syscall spawn
npm ERR! file sh
npm ERR! errno ENOENT
npm ERR! magicmirror@2.10.1 start: `./run-start.sh`
npm ERR! spawn ENOENT
npm ERR! 
npm ERR! Failed at the magicmirror@2.10.1 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

npm ERR! A complete log of this run can be found in:
npm ERR!     /root/.npm/_logs/2020-03-28T03_18_41_984Z-debug.log

[sdetweil]

@sgarg15 said in MMM-usonic Problems:

so rn i did the install in the /home/pi/node_modules

what install?

MMM_Swipe (https://github.com/mochman/MMM-Swipe)

already lists that dependency in package.json

  "dependencies": {
    "math-statistics": "latest",
    "mmm-usonic": "latest",
    "mmm-gpio": "latest"
  },

and lists that file in node_helper.js

const usonic = require('mmm-usonic');

the install instructions say

1. Navigate into your MagicMirror's modules folder and execute git clone https://github.com/mochman/MMM-Swipe.git. A new folder labeled MMM-Swipe will appear, cd into it.

2 Execute npm install to install the dependencies

if u are adding a library to a module, then in the module folder

/home/pi/MagicMirror/modules/module_name   (MMM-Swipe in this case)

you would do

npm install --save mmm-usonic

if all of that is ok, then sometimes a module ships a library that is built on a specific level of electron,
and our is different…
so do

cd ~/MagicMirror
npm install electron-rebuild
node_modules/.bin/electron-rebuild

to rebuild the used libraries to match the installed electron version

[sgarg15]

@sdetweil
So i tried redownloading the module andi get this error when i npm install

> electron-rebuild -e ../../node_modules/electron-prebuilt


An unhandled error occurred inside electron-rebuild
Unable to find electron's version number, either install it or specify an explicit version

Error: Unable to find electron's version number, either install it or specify an explicit version
    at /home/pi/MagicMirror/modules/MMM-Swipe/node_modules/electron-rebuild/lib/src/cli.js:86:19
    at Generator.next (<anonymous>)
    at fulfilled (/home/pi/MagicMirror/modules/MMM-Swipe/node_modules/electron-rebuild/lib/src/cli.js:6:58)
npm ERR! code ELIFECYCLE
npm ERR! errno 255
npm ERR! MMM-Swipe@1.1.1 postinstall: `electron-rebuild -e ../../node_modules/electron-prebuilt`
npm ERR! Exit status 255
npm ERR! 
npm ERR! Failed at the MMM-Swipe@1.1.1 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

it says it cant find the electron version number, but idk how to fix it

[sgarg15]

@sdetweil
Any ideas?

[sdetweil]

@sgarg15 maybe can look tomorrow, not home now

[sdetweil]

@sdetweil that module (mmm-usonic) is not for magic mirror, but a library for a potential module to use to talk to the hardware…

sadly has same labeling and same verbiage (module)

he wrote MMM-Swipe, which uses his library (mmm-usonic)

[sdetweil]

@sgarg15 to fix the electron rebuild problem,

the package.json file in MMM-Swipe and change

this

    "postinstall": "node_modules/.bin/electron-rebuild -e ../../node_modules/electron-prebuilt"

to this

    "postinstall": "node_modules/.bin/electron-rebuild"

[sgarg15]

@sdetweil So the install worked properly but then when i ran sudo npm start it gave this error

[1580:0329/130746.224199:FATAL:electron_main_delegate.cc(211)] Running as root without --no-sandbox is not supported. See https://crbug.com/638180.

Any idea what that means?