After a complete reinstall of MM, I finally managed to resolve this. After reinstalling the original NetworkScanner module and using macaddresses to add to the config.js, I kept getting the “sudo requires your password” message. I went through node_helper.js and the only command that appears to require sudo is arp-scan. So I amended sudoers to allow sudo arp-scan without password using:

sudo visudo

and then adding:

 # Allow arp-scan without sudo
username ALL=(ALL) NOPASSWD: /usr/sbin/arp-scan

This allows sudo arp-scan to run without a password, while maintaining password requirements for other sudo commands.

Many thanks to Sam et. al. for input on this issue.

Those devices are ethernet connected. Also, I was just checking the logs and there are a lot of ip addresses and:

0|mm       | [20:52:38.389] [LOG]    MMM-NetworkScanner is performing arp-scan
0|mm       | [20:52:38.419] [LOG]    MMM-NetworkScanner is performing ip address scan

but no MAC addresses - which you seem to have in your logs.

@sdetweil
This is one of the devices from the config.js

{ ipAddress: "192.168.1.11", name: "Champagne", icon: "server"}

MMM-NetworkScanner received a notification: IP_ADDRESS 
Object { ipAddress: "192.168.1.11", name: "Champagne", icon: "server", color: "#ffffff", showOffline: true, online: true }

This is from the console:

MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:  
Array [ "Champagne", true ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status. 
Array [ "Champagne", true ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner Champagne is online

Strangely when I run sudo arp -scan -l, this device doesn’t appear. But doesn’t the information from the console suggest that it should be displayed?

Conversely, the arp scan does find 192.168.1.15, but console displays this:

MMM-NetworkScanner received a notification: IP_ADDRESS 
Object { ipAddress: "192.168.1.15", name: "Millie", icon: "server", color: "#ffffff", showOffline: true, online: false }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:  
Array [ "Millie", false ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status. 
Array [ "Millie", false ]

I would think that one of these would be displayed on the MM.

Any further thoughts? Thanks.

@sdetweil OK - do not have access to machine now, but will have a look later. Thanks.

@sdetweil Hi Sam - I appreciate your assistance. I am actually asking that question legitimately out of ignorance. I assume that if it appears in the console as follows:

Object { ipAddress: “192.168.1.11”, name: “Champagne”, icon: “server”, color: “#ffffff”, showOffline: true, online: true }

then it would be show up in the Mirror, but maybe there are several steps in between…

In any case - thanks for your help.

Hi Sam - they were not at the time of the scan, but they have been picked up in console messages previously. For example:

Shouldn’t that then show up on the Mirror?

@sdetweil Here is the scan result:

Interface: enp1s0, datalink type: EN10MB (Ethernet)
Starting arp-scan 1.9 with 256 hosts (http://www.nta-monitor.com/tools/arp-scan/                                                                                                 )
192.168.1.1     f4:f2:6d:9f:72:89       TP-LINK TECHNOLOGIES CO.,LTD.
192.168.1.15    c0:3f:d5:65:06:6f       Elitegroup Computer Systems Co.,Ltd.
192.168.1.50    e0:2f:6d:62:b6:d5       Cisco Systems, Inc
192.168.1.52    00:15:65:70:6b:f9       XIAMEN YEALINK NETWORK TECHNOLOGY CO.,LT                                                                                                 D
192.168.1.53    00:15:65:bb:a0:8d       XIAMEN YEALINK NETWORK TECHNOLOGY CO.,LT                                                                                                 D
192.168.1.101   7c:2f:80:6e:56:ff       Gigaset Communications GmbH
192.168.1.103   78:3e:53:40:9b:97       BSkyB Ltd
192.168.1.105   d8:cb:8a:71:a5:f5       Micro-Star INTL CO., LTD.
192.168.1.108   08:05:81:f5:8c:2e       Roku, Inc.
192.168.1.109   10:62:e5:ac:b9:f7       Hewlett Packard
192.168.1.111   f0:1d:bc:8e:da:fa       Microsoft Corporation

13 packets received by filter, 0 packets dropped by kernel
Ending arp-scan 1.9: 256 hosts scanned in 4.391 seconds (58.30 hosts/sec). 11 re                                                                                                 sponded

Hi Sam - yes - changed to top_left. Still “Loading…” If I go into the developers console, and search in the text field for “error” it only brings up the following (although the top of the console indicates that there are 3 errors)

loader.js:203 Error on loading stylesheet: css/custom.css

@sdetweil
This is what is showing in the console…

‘’’
Load script: modules/MMM-NetworkScanner//MMM-NetworkScanner.js loader.js:179:8
Module registered: MMM-NetworkScanner module.js:476:6
Bootstrapping module: MMM-NetworkScanner loader.js:150:7
Scripts loaded for: MMM-NetworkScanner loader.js:155:8
Load stylesheet: modules/MMM-NetworkScanner/MMM-NetworkScanner.css loader.js:194:8
Styles loaded for: MMM-NetworkScanner loader.js:157:9
Translations loaded for: MMM-NetworkScanner loader.js:159:10
Starting module: MMM-NetworkScanner MMM-NetworkScanner.js:37:7
MMM-NetworkScanner config:
Object { devices: (4) […], network: “-l”, showUnknown: false, showOffline: true, showLastSeen: true, keepAlive: 600, updateInterval: 30, sort: true, residents: [], occupiedCMD: null, … }
MMM-NetworkScanner.js:38:30
MMM-NetworkScanner is initiating network scan MMM-NetworkScanner.js:273:30
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.11”, name: “Champagne”, icon: “server”, color: “#ffffff”, showOffline: true, online: true }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “Champagne”, true ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “Champagne”, true ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner Champagne is online MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.17”, name: “Marmite”, icon: “server”, color: “#ffffff”, showOffline: true, online: false }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “Marmite”, false ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “Marmite”, false ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner Marmite is offline MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.70”, name: “JoJo”, icon: “male”, color: “#ffffff”, showOffline: true, online: false }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “JoJo”, false ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “JoJo”, false ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner JoJo is offline MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.11”, name: “Champagne”, icon: “server”, color: “#ffffff”, showOffline: true, online: true }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “Champagne”, true ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “Champagne”, true ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner Champagne is online MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.17”, name: “Marmite”, icon: “server”, color: “#ffffff”, showOffline: true, online: false }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “Marmite”, false ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “Marmite”, false ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner Marmite is offline MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
{…}
​
color: “#ffffff”
​
icon: “male”
​
ipAddress: “192.168.1.70”
​
name: “JoJo”
​
online: false
​
showOffline: true
​
: Object { … }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “JoJo”, false ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “JoJo”, false ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner JoJo is offline MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.11”, name: “Champagne”, icon: “server”, color: “#ffffff”, showOffline: true, online: true }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “Champagne”, true ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “Champagne”, true ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner Champagne is online MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.17”, name: “Marmite”, icon: “server”, color: “#ffffff”, showOffline: true, online: false }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “Marmite”, false ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “Marmite”, false ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner Marmite is offline MMM-NetworkScanner.js:295:31
MMM-NetworkScanner received a notification: IP_ADDRESS
Object { ipAddress: “192.168.1.70”, name: “JoJo”, icon: “male”, color: “#ffffff”, showOffline: true, online: false }
MMM-NetworkScanner.js:70:30
MMM-NetworkScanner IP_ADDRESS device:
Array [ “JoJo”, false ]
MMM-NetworkScanner.js:80:31
MMM-NetworkScanner is updating device status.
Array [ “JoJo”, false ]
MMM-NetworkScanner.js:284:31
MMM-NetworkScanner JoJo is offline MMM-NetworkScanner.js:295:31
‘’’

​

@sdetweil
Hi Sam - yes it is already installed.

I treid the steps posted by todro (a couple of times).

Here is log output, but MM still shows Devices Online “Loading…”:

[19:46:01.569] [LOG]    Use existing news fetcher for url: http://rss.cnn.com/rss/edition.rss
[19:46:01.623] [LOG]    MMM-NetworkScanner received CONFIG
[19:46:01.623] [LOG]    MMM-NetworkScanner completed CONFIG
[19:46:01.625] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[19:46:01.625] [LOG]    MMM-NetworkScanner is performing arp-scan
[19:46:01.645] [LOG]    MMM-NetworkScanner is performing ip address scan
[19:46:01.646] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[19:46:01.646] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[19:46:01.656] [LOG]    MMM-NetworkScanner is checking device:  Millie
[19:46:01.657] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[19:46:01.657] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[19:46:01.671] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[19:46:01.672] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[19:46:01.681] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
[19:46:01.838] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[19:46:03.674] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[19:46:03.685] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]
[19:46:30.817] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[19:46:30.818] [LOG]    MMM-NetworkScanner is performing arp-scan
[19:46:30.840] [LOG]    MMM-NetworkScanner is performing ip address scan
[19:46:30.841] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[19:46:30.842] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[19:46:30.853] [LOG]    MMM-NetworkScanner is checking device:  Millie
[19:46:30.855] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[19:46:30.856] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[19:46:30.872] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[19:46:30.873] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[19:46:30.882] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
[19:46:30.895] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[19:46:32.875] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[19:46:32.901] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]
[19:47:10.155] [LOG]    [SIGINT] Received. Shutting down server...
[19:47:10.156] [LOG]    Stopping module helper: updatenotification
[19:47:10.156] [LOG]    Stopping module helper: newsfeed
[19:47:10.156] [LOG]    Stopping module helper: MMM-UKNationalRail
[19:47:10.157] [LOG]    Stopping module helper: MMM-NetworkScanner
[19:47:20.881] [LOG]    Starting MagicMirror: v2.10.1
[19:47:20.890] [LOG]    Loading config ...
[19:47:20.895] [LOG]    Loading module helpers ...
[19:47:20.896] [LOG]    No helper found for module: alert.
[19:47:20.930] [LOG]    Initializing new module helper ...
[19:47:20.931] [LOG]    Module helper loaded: updatenotification
[19:47:20.932] [LOG]    No helper found for module: clock.
[19:47:20.932] [LOG]    No helper found for module: currentweather.
[19:47:21.243] [LOG]    Initializing new module helper ...
[19:47:21.243] [LOG]    Module helper loaded: newsfeed
[19:47:21.526] [LOG]    Initializing new module helper ...
[19:47:21.526] [LOG]    Module helper loaded: MMM-UKNationalRail
[19:47:21.526] [LOG]    No helper found for module: MMM-TFL.
[19:47:21.555] [LOG]    Initializing new module helper ...
[19:47:21.555] [LOG]    Module helper loaded: MMM-NetworkScanner
[19:47:21.556] [LOG]    All module helpers loaded.
[19:47:21.556] [LOG]    Starting server on port 8080 ...
[19:47:21.562] [INFO]   You're using a full whitelist configuration to allow for all IPs
[19:47:21.569] [LOG]    Server started ...
[19:47:21.570] [LOG]    Connecting socket for: updatenotification
[19:47:21.571] [LOG]    Connecting socket for: newsfeed
[19:47:21.571] [LOG]    Starting module: newsfeed
[19:47:21.572] [LOG]    Connecting socket for: MMM-UKNationalRail
[19:47:21.572] [LOG]    MMM-UKNationalRail helper started ...
[19:47:21.572] [LOG]    Connecting socket for: MMM-NetworkScanner
[19:47:21.573] [LOG]    Starting module in node_helper: MMM-NetworkScanner
[19:47:21.573] [LOG]    Sockets connected & modules started ...
[19:47:21.573] [LOG]
Ready to go! Please point your browser to: http://0.0.0.0:8080
[19:47:30.001] [LOG]    Create new news fetcher for url: http://www.nytimes.com/services/xml/rss/nyt/HomePage.xml - Interval: 300000
[19:47:30.035] [LOG]    Create new news fetcher for url: http://rss.cnn.com/rss/edition.rss - Interval: 300000
[19:47:30.459] [LOG]    MMM-NetworkScanner received CONFIG
[19:47:30.460] [LOG]    MMM-NetworkScanner completed CONFIG
[19:47:30.473] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[19:47:30.473] [LOG]    MMM-NetworkScanner is performing arp-scan
[19:47:30.501] [LOG]    MMM-NetworkScanner is performing ip address scan
[19:47:30.502] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[19:47:30.503] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[19:47:30.515] [LOG]    MMM-NetworkScanner is checking device:  Millie
[19:47:30.515] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[19:47:30.516] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[19:47:30.532] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[19:47:30.533] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[19:47:30.544] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
sudo requires your password: [19:47:30.558] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[19:47:32.535] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[19:47:32.547] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]
[19:47:59.468] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[19:47:59.469] [LOG]    MMM-NetworkScanner is performing arp-scan
[19:47:59.489] [LOG]    MMM-NetworkScanner is performing ip address scan
[19:47:59.492] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[19:47:59.494] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[19:47:59.504] [LOG]    MMM-NetworkScanner is checking device:  Millie
[19:47:59.505] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[19:47:59.506] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[19:47:59.514] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[19:47:59.514] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[19:47:59.522] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
[19:47:59.525] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[19:48:01.516] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[19:48:01.529] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]
[19:48:26.714] [LOG]    [SIGINT] Received. Shutting down server...
[19:48:26.715] [LOG]    Stopping module helper: updatenotification
[19:48:26.716] [LOG]    Stopping module helper: newsfeed
[19:48:26.716] [LOG]    Stopping module helper: MMM-UKNationalRail
[19:48:26.716] [LOG]    Stopping module helper: MMM-NetworkScanner
[19:48:33.169] [LOG]    Starting MagicMirror: v2.10.1
[19:48:33.179] [LOG]    Loading config ...
[19:48:33.183] [LOG]    Loading module helpers ...
[19:48:33.185] [LOG]    No helper found for module: alert.
[19:48:33.220] [LOG]    Initializing new module helper ...
[19:48:33.221] [LOG]    Module helper loaded: updatenotification
[19:48:33.221] [LOG]    No helper found for module: clock.
[19:48:33.222] [LOG]    No helper found for module: currentweather.
[19:48:33.526] [LOG]    Initializing new module helper ...
[19:48:33.527] [LOG]    Module helper loaded: newsfeed
[19:48:33.809] [LOG]    Initializing new module helper ...
[19:48:33.810] [LOG]    Module helper loaded: MMM-UKNationalRail
[19:48:33.810] [LOG]    No helper found for module: MMM-TFL.
[19:48:33.840] [LOG]    Initializing new module helper ...
[19:48:33.840] [LOG]    Module helper loaded: MMM-NetworkScanner
[19:48:33.840] [LOG]    All module helpers loaded.
[19:48:33.841] [LOG]    Starting server on port 8080 ...
[19:48:33.847] [INFO]   You're using a full whitelist configuration to allow for all IPs
[19:48:33.854] [LOG]    Server started ...
[19:48:33.855] [LOG]    Connecting socket for: updatenotification
[19:48:33.855] [LOG]    Connecting socket for: newsfeed
[19:48:33.856] [LOG]    Starting module: newsfeed
[19:48:33.856] [LOG]    Connecting socket for: MMM-UKNationalRail
[19:48:33.857] [LOG]    MMM-UKNationalRail helper started ...
[19:48:33.857] [LOG]    Connecting socket for: MMM-NetworkScanner
[19:48:33.857] [LOG]    Starting module in node_helper: MMM-NetworkScanner
[19:48:33.858] [LOG]    Sockets connected & modules started ...
[19:48:33.858] [LOG]
Ready to go! Please point your browser to: http://0.0.0.0:8080
[19:48:47.214] [LOG]    Create new news fetcher for url: http://www.nytimes.com/services/xml/rss/nyt/HomePage.xml - Interval: 300000
[19:48:47.247] [LOG]    Create new news fetcher for url: http://rss.cnn.com/rss/edition.rss - Interval: 300000
[19:48:47.312] [LOG]    MMM-NetworkScanner received CONFIG
[19:48:47.313] [LOG]    MMM-NetworkScanner completed CONFIG
[19:48:47.314] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[19:48:47.315] [LOG]    MMM-NetworkScanner is performing arp-scan
[19:48:47.341] [LOG]    MMM-NetworkScanner is performing ip address scan
[19:48:47.342] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[19:48:47.342] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[19:48:47.353] [LOG]    MMM-NetworkScanner is checking device:  Millie
[19:48:47.353] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[19:48:47.354] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[19:48:47.363] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[19:48:47.364] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[19:48:47.372] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
sudo requires your password: [19:48:47.686] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[19:48:49.367] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[19:48:49.381] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]
[19:49:16.634] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[19:49:16.635] [LOG]    MMM-NetworkScanner is performing arp-scan
[19:49:16.657] [LOG]    MMM-NetworkScanner is performing ip address scan
[19:49:16.658] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[19:49:16.658] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[19:49:16.669] [LOG]    MMM-NetworkScanner is checking device:  Millie
[19:49:16.669] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[19:49:16.670] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[19:49:16.679] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[19:49:16.681] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[19:49:16.690] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
[19:49:16.702] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[19:49:18.693] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[19:49:18.695] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]
[19:49:46.639] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[19:49:46.640] [LOG]    MMM-NetworkScanner is performing arp-scan
[19:49:46.670] [LOG]    MMM-NetworkScanner is performing ip address scan
[19:49:46.670] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[19:49:46.670] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[19:49:46.680] [LOG]    MMM-NetworkScanner is checking device:  Millie
[19:49:46.681] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[19:49:46.681] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[19:49:46.703] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[19:49:46.705] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[19:49:46.716] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
[19:49:46.740] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]

Thanks - I did change the config to add one device “JoJo” with an IpAddress and I changed “Millie” from IpAddress to MacAddress (I am guessing that is why it is not showing in the ping result - but am not sure). I did not make any other changes to the config (apart from adding the debug line). There is no other bottom_center module and it clearly displays Devices Online “Loading…”, so I don’t think it’s the case that entries are being pushed off the page.

 {
139                         module:                 "MMM-NetworkScanner",
140                         position:               "bottom_center",
141                         header:                 "Devices Online",
142                         config: {
143                                 devices: [
144                                 { ipAddress: "192.168.1.11", name: "Champagne", icon: "server"},
145                                 { macAddress: "xxxx", name: "Millie", icon: "server"},
146                                 { ipAddress: "192.168.1.17", name:  "Marmite", icon:  "server"},
147                                 { ipAddress: "192.168.1.70", name: "JoJo", icon: "male"}
148                                 ],
149                                 showUnknown: false,
150                                 showOffline:  true,
151                                 keepAlive:  600,
152                                 showLastSeen:  true,
153                                 updateInterval:  30,
154                                 debug: true,
155                                 Password:  'xxxx'
156                                 }
157                 },

Thanks. Scan seems to find some devices, but does not display them on Mirror.

Here is output log:

[20:41:24.611] [LOG]    MMM-NetworkScanner is performing arp-scan
[20:41:24.650] [LOG]    MMM-NetworkScanner is performing ip address scan
[20:41:24.651] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[20:41:24.651] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[20:41:24.666] [LOG]    MMM-NetworkScanner is checking device:  Millie
[20:41:24.667] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[20:41:24.667] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[20:41:24.690] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[20:41:24.691] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[20:41:24.705] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
[20:41:24.707] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[20:41:26.741] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[20:41:26.743] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]
[20:41:54.605] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
[20:41:54.605] [LOG]    MMM-NetworkScanner is performing arp-scan
[20:41:54.630] [LOG]    MMM-NetworkScanner is performing ip address scan
[20:41:54.631] [LOG]    MMM-NetworkScanner is checking device:  Champagne
[20:41:54.631] [LOG]    MMM-NetworkScanner is pinging  192.168.1.11
[20:41:54.644] [LOG]    MMM-NetworkScanner is checking device:  Millie
[20:41:54.645] [LOG]    MMM-NetworkScanner is checking device:  Marmite
[20:41:54.645] [LOG]    MMM-NetworkScanner is pinging  192.168.1.17
[20:41:54.658] [LOG]    MMM-NetworkScanner is checking device:  JoJo
[20:41:54.659] [LOG]    MMM-NetworkScanner is pinging  192.168.1.70
[20:41:54.672] [LOG]    MMM-NetworkScanner completed SCAN_NETWORK
[20:41:54.675] [LOG]    MMM-NetworkScanner ping result:  [ 'Champagne', true ]
[20:41:56.706] [LOG]    MMM-NetworkScanner ping result:  [ 'Marmite', false ]
[20:41:56.707] [LOG]    MMM-NetworkScanner ping result:  [ 'JoJo', false ]

Error log:

[20:35:38.953] [ERROR]  (node:20348) MaxListenersExceededWarning: Possible Event                                                                                                                                                             Emitter memory leak detected. 11 error listeners added. Use emitter.setMaxListen                                                                                                                                                             ers() to increase limit
[20:35:38.953] [ERROR]  (node:20348) MaxListenersExceededWarning: Possible Event                                                                                                                                                             Emitter memory leak detected. 11 end listeners added. Use emitter.setMaxListener                                                                                                                                                             s() to increase limit
[20:35:38.954] [ERROR]  (node:20348) MaxListenersExceededWarning: Possible Event                                                                                                                                                             Emitter memory leak detected. 11 drain listeners added. Use emitter.setMaxListen                                                                                                                                                             ers() to increase limit
[20:35:38.954] [ERROR]  (node:20348) MaxListenersExceededWarning: Possible Event                                                                                                                                                             Emitter memory leak detected. 11 close listeners added. Use emitter.setMaxListen                                                                                                                                                             ers() to increase limit
[20:35:38.955] [ERROR]  (node:20348) MaxListenersExceededWarning: Possible Event                                                                                                                                                             Emitter memory leak detected. 11 data listeners added. Use emitter.setMaxListene                                                                                                                                                             rs() to increase limit

@sdetweil
Thanks Sam

Tried update. Error log below:

[11:45:29.130] [ERROR]  TypeError: Cannot read property 'network' of undefined
    at Class.scanNetworkMAC (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:46:36)
    at Class.socketNotificationReceived (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:33:18)
    at Socket.<anonymous> (/home/jojo/MagicMirror/js/node_helper.js:113:11)
    at Socket.emit (events.js:198:13)
    at /home/jojo/MagicMirror/node_modules/socket.io/lib/socket.js:528:12
    at process._tickCallback (internal/process/next_tick.js:61:11)

Node_helper code:

        // Target hosts/network supplied in config or entire localnet
 46         var arpHosts = self.config.network || '-l';
 47                                 var options = {
 48                                                 cachePassword: true,
 49                                                 prompt: 'Password,' + self.config.Password     // put your password where ???? are (notice the quotes around)
 50                                 }
 51         var arp = sudo(['arp-scan', '-q', arpHosts]) //, options);

Module entry in config.js:

                {
139                         module:                 "MMM-NetworkScanner",
140                         position:               "bottom_center",
141                         header:                 "Devices Online",
142                         config: {
143                                 devices: [
144                                 { ipAddress: "192.168.1.11", name: "Champagne", icon: "server"},
145                                 { ipAddress: "192.168.1.15", name: "Millie", icon: "server"},
146                                 { ipAddress: "192.168.1.17", name:  "Marmite", icon:  "server"}
147                                 ],
148                                 showUnknown: false,
149                                 showOffline:  true,
150                                 keepAlive:  600,
151                                 showLastSeen:  true,
152                                 updateInterval:  30,
153                                 Password:  'xxxx'
154                                 }
155                 },

@sdetweil
Hi Sam - thanks I tried the update. Still getting the same error - from the log:

[19:00:49.868] [ERROR]  TypeError: Cannot read property 'network' of undefined
    at Class.scanNetworkMAC (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:42:36)
    at Class.socketNotificationReceived (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:30:18)
    at Socket.<anonymous> (/home/jojo/MagicMirror/js/node_helper.js:113:11)
    at Socket.emit (events.js:198:13)
    at /home/jojo/MagicMirror/node_modules/socket.io/lib/socket.js:528:12
    at process._tickCallback (internal/process/next_tick.js:61:11)

That is how the config looks.

Still getting the node_helper line 42 error. Will park this for now. Thank you for spending so much time on this Sam - much appreciated. Will come back to this later in the week.

Hmm

So with the password entered only in the config file, the error output still references line 42

 var arpHosts = this.config.network || '-l';

Error output:

0|mm       | [19:37:36.956] [ERROR]  TypeError: Cannot read property 'network' of undefined
0|mm       |     at Class.scanNetworkMAC (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:42:36)
0|mm       |     at Class.socketNotificationReceived (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:30:18)
0|mm       |     at Socket.<anonymous> (/home/jojo/MagicMirror/js/node_helper.js:113:11)
0|mm       |     at Socket.emit (events.js:198:13)
0|mm       |     at /home/jojo/MagicMirror/node_modules/socket.io/lib/socket.js:528:12
0|mm       |     at process._tickCallback (internal/process/next_tick.js:61:11)

0|mm  | [19:37:50.982] [LOG]    MMM-NetworkScanner received SCAN_NETWORK
0|mm  | [19:37:50.983] [LOG]    MMM-NetworkScanner is performing arp-scan
0|mm  | [19:37:50.984] [LOG]    Whoops! There was an uncaught exception...
0|mm  | [19:37:50.984] [ERROR]
0|mm  | TypeError: Cannot read property 'network' of undefined
0|mm  |     at Class.scanNetworkMAC (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:42:36)
0|mm  |     at Class.socketNotificationReceived (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:30:18)
0|mm  |     at Socket.<anonymous> (/home/jojo/MagicMirror/js/node_helper.js:113:11)
0|mm  |     at Socket.emit (events.js:198:13)
0|mm  |     at /home/jojo/MagicMirror/node_modules/socket.io/lib/socket.js:528:12
0|mm  |     at process._tickCallback (internal/process/next_tick.js:61:11)
0|mm  | [19:37:50.985] [LOG]
0|mm  | MagicMirror will not quit, but it might be a good idea to check why this happened. Maybe no internet connection?
0|mm  | [19:37:50.986] [LOG]    If you think this really is an issue, please open an issue on GitHub: https://github.com/MichMich/MagicMirror/issues
0|mm  | [19:38:21.046] [LOG]
0|mm  | MMM-NetworkScanner received SCAN_NETWORK
0|mm  | [19:38:21.047] [LOG]
0|mm  | MMM-NetworkScanner is performing arp-scan
0|mm  | [19:38:21.048] [LOG]    Whoops! There was an uncaught exception...
0|mm  | [19:38:21.048] [ERROR]
0|mm  | TypeError: Cannot read property 'network' of undefined
0|mm  |     at Class.scanNetworkMAC (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:42:36)
0|mm  |     at Class.socketNotificationReceived (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:30:18)
0|mm  |     at Socket.<anonymous> (/home/jojo/MagicMirror/js/node_helper.js:113:11)
0|mm  |     at Socket.emit (events.js:198:13)
0|mm  |     at /home/jojo/MagicMirror/node_modules/socket.io/lib/socket.js:528:12
0|mm  |     at process._tickCallback (internal/process/next_tick.js:61:11)

Sorry I’m not being clear. I know that I need to modify the config.js (and have done so), but in line 45 of node_helper.js (as shown below) there is:

 prompt: 'Password,' + this.config.Password     // put your password where ???? are (notice the quotes around)

Should I leave this as is or fill in the password? That is where I have tried it both ways.

Code you asked for from node_helper.js:

    scanNetworkMAC: function() {
 38         this.log(this.name + " is performing arp-scan");
 39
 40         var self = this;
 41         // Target hosts/network supplied in config or entire localnet
 42         var arpHosts = this.config.network || '-l';
 43                                 var options = {
 44                                                 cachePassword: true,
 45                                                 prompt: 'Password,' + this.config.Password     // put your password where ???? are (notice the quotes around)
 46                                 }
 47         var arp = sudo(['arp-scan', '-q', arpHosts], options);

@sdetweil
I tried it both ways - but should the ‘password’ field in the helper file be filled in?

@karsten13
Hi - it seems to function correctly - it returns the IP and MAC addresses of the various clients on the network.

@sdetweil
Thanks Sam - tried your version of the module and modified the config.js accordingly. Still not quite working. Error logs as follows:

0|mm       |     at process._tickCallback (internal/process/next_tick.js:61:11)
0|mm       | [09:41:25.508] [ERROR]  ReferenceError: options is not defined
0|mm       |     at Class.scanNetworkMAC (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:42:54)
0|mm       |     at Class.socketNotificationReceived (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:29:18)
0|mm       |     at Socket.<anonymous> (/home/jojo/MagicMirror/js/node_helper.js:113:11)
0|mm       |     at Socket.emit (events.js:198:13)
0|mm       |     at /home/jojo/MagicMirror/node_modules/socket.io/lib/socket.js:528:12
0|mm       |     at process._tickCallback (internal/process/next_tick.js:61:11)
0|mm       | [09:41:55.508] [ERROR]  ReferenceError: options is not defined
0|mm       |     at Class.scanNetworkMAC (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:42:54)
0|mm       |     at Class.socketNotificationReceived (/home/jojo/MagicMirror/modules/MMM-NetworkScanner/node_helper.js:29:18)
0|mm       |     at Socket.<anonymous> (/home/jojo/MagicMirror/js/node_helper.js:113:11)
0|mm       |     at Socket.emit (events.js:198:13)
0|mm       |     at /home/jojo/MagicMirror/node_modules/socket.io/lib/socket.js:528:12
0|mm       |     at process._tickCallback (internal/process/next_tick.js:61:11)