Differences

This shows you the differences between two versions of the page.

--- venus-os:large [2024-04-03 19:07] – [5.1 Introduction] mvader
+++ venus-os:large [2024-07-14 16:53] (current) – [8.1 Disk space issues / data partition full] mvader
@@ Line 120: / Line 120: @@
 ===== 5. Node-RED =====
-{{ :venus-os:node-red-contrib-victron-nodes.png?nolink |}}
+{{:venus-os:node-palette.png?direct&nolink |}}
 ==== 5.1 Introduction ====
@@ Line 184: / Line 184: @@
 ==== 5.4 Controlling relays ====
+For a relay to be controllable via Node-RED, it needs to be switched to manual control first. In most cases this needs to be done by using [[https://www.victronenergy.com/panel-systems-remote-monitoring/victronconnect|VictronConnect]].
+;#;
+{{:venus-os:victron-connect-relay-manual.png?400|}}
+;#;
 === GX Device relays ===
@@ Line 200: / Line 206: @@
 === SolarCharger MPPT Relay ===
-Currently it is not possible to control the relay in a MPPT Solar Charger, even though there is a Victron node offering such functionality. The reason it doesn't work, is that VictronConnect does not have the required "Manual control" option in the list of selectable Relay modes for the MPPTs. This will be fixed at some point.
+In order to switch the relay via Node-RED, first use VictronConnect to switch the operation mode to //manual control//.
 Note that only the larger model solar chargers feature a relay.
@@ Line 208: / Line 214: @@
 === RS series (inverter, multi) relays ===
-Currently not controllable. Will be controllable in the future.
+First set the relay to //manual control// using VictronConnect. Once that has been done, the relay can be controlled using Node-RED.
 === Charger relays ===
@@ Line 343: / Line 349: @@
 And restart Node-RED.
+=== Q11: Is there a way to have the context survive reboots? ===
+By default the context is stored in memory of the GX device only. If the GX device gets rebooted, the
+content of the memory gets reset and you loose the context information.
+In order to keep the context data, it is needed to [[https://nodered.org/docs/api/context/store/localfilesystem|store the context to disk]]. This can be achieved by creating (or adding to) a user configuration file ''/data/home/nodered/.node-red/settings-user.js'', containing:
+  module.exports = {
+    contextStorage: {
+      default: {
+        module: "localfilesystem",
+        config: {
+          flushInterval: 300 // Save context data every 5 minutes
+        }
+      }
+    }
+  }
+With the above settings, context files will get created periodically in ''/data/home/nodered/.nodered/context/''. In order not to wear out the flash too much, don't write too often.
 ===== 6. Signal K =====
@@ Line 394: / Line 420: @@
   * [[https://demo.signalk.org/documentation/|The official Signal K documentation]]
   * [[https://community.victronenergy.com/search.html?c=&includeChildren=&f=&type=question+OR+idea+OR+kbentry+OR+answer+OR+topic+OR+user&redirect=search%2Fsearch&sort=relevance&q=signal+k|Signal K topics on the Victron Community forum]]
-  * [[http://slack-invite.signalk.org/|Signal K Slack]] - a real time chat group including a special Victron channel.
+  * [[https://discord.gg/uuZrwz4dCS |Signal K Discord]] - a real time chat group including a special Victron channel.
 Do not contact normal Victron support for any help on SignalK. Its based on community support, not official support.
@@ Line 593: / Line 619: @@
   - Do full GX factory reset, as per the instructions in the GX user manuals. This includes downloading a file called venus-data.tgz; see GX manual for details. Disadvantage is that you'll need to reconfigure the GX.
-  - Remove all Signal K Server log files. In case you're using SignalK, then we recommend to try that option first. See next chapter on how to do that (requires a USB stick or SD Card), and once done make sure to double check you're Signal K log setup; Most importantly, enable the ''Keep only most recent data log files'' option.
+  - Remove all Signal K Server log files. In case you're using SignalK, then we recommend to try that option first. See next chapter on how to do that (requires a USB stick or SD Card), and once done make sure to double check you're Signal K log setup; Most importantly, make sure that the ''Keep only most recent data log files'' option is enabled. That feature is enabled by default, and can be found in the Signal K -> Server -> Settings section.
-  - A more detailed approach is logging in on SSH, and checking for disk space:
+  - A more detailed approach is logging into the SSH console, and checking for disk space:
 **Tips and tricks to login a diagnose disk space**
@@ Line 650: / Line 676: @@
   * [[https://www.victronenergy.com/upload/software/venus-factory-default/venus-data-00-backup-data-partition.tgz|venus-data-00-backup-data-partition.tgz]] - copies all that is on the ''/data'' partition onto the usb stick
-  * [[https://www.victronenergy.com/upload/software/venus-factory-default/venus-data-20-signalk-reset.tgz|venus-data-20-signalk-reset.tgz]] - wipes everything from ''/data/conf/signalk/''
+  * [[https://www.victronenergy.com/upload/software/venus-factory-default/venus-data-20-signalk-reset.tgz|venus-data-20-signalk-reset.tgz]] - removes all files and directories from ''/data/conf/signalk/'', which lets you start over again with SignalK.
   * [[https://www.victronenergy.com/upload/software/venus-factory-default/venus-data-30-signalk-delete-data-logs.tgz|venus-data-30-signalk-delete-data-logs.tgz]] - removes all SignalK loging
-  * [[https://www.victronenergy.com/upload/software/venus-factory-default/venus-data-20-node-red-reset.tgz|venus-data-20-node-red-reset.tgz]] - wipes all in ''/data/home/nodered/''
+  * [[https://www.victronenergy.com/upload/software/venus-factory-default/venus-data-20-node-red-reset.tgz|venus-data-20-node-red-reset.tgz]] - removes the files from ''/data/home/nodered/'', which lets you start with Node-RED from scratch.
 See [[https://www.victronenergy.com/live/ccgx:root_access#hooks_to_install_run_own_code_at_boot|here]] for more information on how this process works.