Node-RED is a flow based programming application for wiring together hardware devices, APIs and online services in new and interesting ways. For more information see http://nodered.org
This snap is based on https://github.com/node-red but has additional Raspberry Pi specific sensor libraries and a toolchain included.
Node-RED listens by default on port 1880 after installation.
You will have to connect all the required snap interfaces for hardware your flows will use.
The snap does come with the palette editor enabled and ships the gcc toolchain as well as a bunch of development libraries so that npm can dynamically compile nodes where required when you add them via the palette editor.
To see all connected and available connections please run
sudo snap connections node-red-rpi
To connect i.e. a GPIO interface (GPIO 14 here) you do
sudo snap connect node-red-rpi:gpio pi:bcm-gpio-14
sudo snap connect node-red-rpi:gpio-memory-control
Similar for i2c
sudo snap connect node-red-rpi:i2c pi:i2c-1
When the snap is running you can view the Node-RED log using
journalctl -f -u snap.node-red-rpi*
You can also stop and restart the application by
snap restart node-red-rpi
snap disable node-red-rpi
snap enable node-red-rpi
The settings.js and flows.json files are located in
the /root/snap/node-red-rpi/current/ directory.
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Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.
Snaps are discoverable and installable from the Snap Store, an app store with an audience of millions.
Snapd can be installed from Manjaro’s Add/Remove Software application (Pamac), found in the launch menu. From the application, search for snapd, select the result, and click Apply.
Alternatively, snapd can be installed from the command line:
sudo pacman -S snapd
Once installed, the systemd unit that manages the main snap communication socket needs to be enabled:
sudo systemctl enable --now snapd.socket
To enable classic snap support, enter the following to create a symbolic link between /var/lib/snapd/snap and /snap:
sudo ln -s /var/lib/snapd/snap /snap
Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.
To install node-red-rpi, simply use the following command:
sudo snap install node-red-rpi
Browse and find snaps from the convenience of your desktop using the snap store snap.
Interested to find out more about snaps? Want to publish your own application? Visit snapcraft.io now.
