Problem installing in RPi3: onoff library and later

None. npm setups the links itself

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pi@raspberrypi:/ $ uname -m
armv6l

pi@raspberrypi:/ $ uname -a
Linux raspberrypi 4.4.32-aufs #1 Sat Nov 19 00:02:41 CET 2016 armv6l GNU/Linux

pi@raspberrypi:/ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
NAME="Raspbian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"

pi@raspberrypi:/ $ cat /etc/debian_version
8.0

pi@raspberrypi:/ $ cat /proc/cpuinfo
processor       : 0
model name      : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS        : 897.37
Features        : half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xb76
CPU revision    : 7

Hardware        : BCM2708
Revision        : 000f
Serial          : 00000000120d3228

pi@raspberrypi:/ $ echo $PATH
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/opt/nodejs/bin/:/opt/nodejs/bin/:/opt/nodejs/bin/

pi@raspberrypi:/ $ echo $NODE_PATH
/usr/local/lib/node_modules

pi@raspberrypi:/ $ node --version
v6.9.5

pi@raspberrypi:/ $ npm -v
3.10.10

Full or Lite?

@vshymanskyy and @Gunner I started with a fresh install of Jessie Lite today. After a couple of hours I was almost up and running when the SD card gave systemd errors on bootup. The card wasnā€™t failing and I tried for a few hours to fix it but no joy.

Tried a second time but this time decided I would install the filesystem to a USB stick and all seems to be fine. Still need to check out my DS18B20 setup but basic operation is fine.

Guide for USB filesystem is at https://www.raspberrypi.org/forums/viewtopic.php?f=29&t=44177
It looks detailed but itā€™s not really that bad. @paulv wrote it in 2013 but updated it just a couple of weeks ago.

I made a few notes during the Blynk setup but basically they are as published by @vshymanskyy a few posts back.

Iā€™m not getting a $NODE_PATH with your instructions.
The following will retain the nodejs path between reboots on a Pi

echo 'export PATH=$PATH:/opt/nodejs/bin/'  >> ~/.bashrc

Put your version checks into a script and this is what I get, third line from the bottom is the missing $NODE_PATH. Everything works fine as it is but it does mean some of my scripts need full path details before they will run. It would be nice to have a $NODE_PATH if you have a fix.

armv6l
Linux raspberrypi 4.4.38+ #938 Thu Dec 15 15:17:54 GMT 2016 armv6l GNU/Linux
PRETTY_NAME="Raspbian GNU/Linux 8 (jessie)"
NAME="Raspbian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=raspbian
ID_LIKE=debian
HOME_URL="http://www.raspbian.org/"
SUPPORT_URL="http://www.raspbian.org/RaspbianForums"
BUG_REPORT_URL="http://www.raspbian.org/RaspbianBugs"
8.0
processor       : 0
model name      : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS        : 697.95
Features        : half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xb76
CPU revision    : 7

Hardware        : BCM2708
Revision        : 000e
Serial          : 00000000f29267b3
/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/opt/nodejs/bin/

v6.9.5
4.2.0

@Gunner, $NODE_PATH is invalid in your case. Either set it to new path, or remove it completely from environment.

@vshymanskyy what is the command to set up the correct $NODE_PATH based on the /opt/ installation?

That wouldnā€™t surprise meā€¦ all the different PATH commands I have dropped inā€¦ I am just a copy/paste linux user (thank heavens CLI remembers past commands :wink: ), but I will Google yet some more and give it a tryā€¦

OK, after taking some time away from this RPi hassleā€¦ I am back where I think everything is installed, but running blynk-client <auth> results in absolutely nothing. If I donā€™t have the correct path, how come no error is thrown?

echo $PATH gets me this:

/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/local/games:/usr/games:/opt/nodejs/bin/:/opt/nodejs/bin/

echo $NODE_PATH is blankā€¦

So what am I actually to do now?? After Googling, I think? I understand a bit about adding a path, but what is the correct path to add??

Also, @Costas did give me a mod for the blynk-node.js file, to set it up for my Local Server, but that is more a semi-permanent thingā€¦ so even if it is a pain to switch back and forth between Cloud and Local, what parameters do I use with blynk-client <auth> to get it to connect to my local server instead of Cloud?

Please check our latest guide on Node.js installation for Linux: http://help.blynk.cc/hardware-and-libraries/node-js/how-to-install-nodejs-library-on-linux

@Gunner please check the ā€œCreating a new Node.js project with Blynkā€ section

I am installing nodejs right nowā€¦ where is this other section hiding?

In the middle of the article :wink:
This is an option that does not require NODE_PATH setup, so should work for you. Tell me if it helps. Thx

Ahā€¦ now he wants me to actually READ the articlesā€¦ fine, I guess I will :stuck_out_tongue_winking_eye:

Try this ā€¦ it worked for me on rapsberry pi 3 B

Download and build Blynk JS library using npm:

sudo apt-get update && sudo apt-get upgrade
sudo apt-get install build-essential npm

run as root

sudo su
sudo npm install -g npm
sudo npm install -g onoff
sudo npm install -g blynk-library

exit

exit

Thanks @bb8 But try to check the Time/Date stamps before posting as this is an older topic and much has been updated in the libraries, documents, etc, since.

1 - http://help.blynk.cc/how-to-connect-different-hardware-with-blynk/raspberry-pi/raspberry-pi-and-blynk

2 - http://help.blynk.cc/how-to-connect-different-hardware-with-blynk/raspberry-pi/blynk-and-raspberry-pi-tips-tricks

3 - http://help.blynk.cc/how-to-connect-different-hardware-with-blynk/raspberry-pi/how-to-install-nodejs-library-on-linux