question

Hi @Alda,

not specifically here in the community, unless someone posts a dashboard. You may want to try the search feature.

The best source is the official Node-Red Forum: https://discourse.nodered.org

Hi @Stefanie

Thank you for your answer. I already made some my own flows on the other HW, but not now I want install a node red to Cerbo GX and not sure if victron nodes are configured out of the box after large FW installation and also visual solutions of other users would be fine.

Alex

@Alda I have a Node-RED system similar to what you describe and I am happy to share flows and dashboards layouts but there are a number of potential problems in sharing for specific systems. I have tried to load flows that I found in this community but unless the systems are very similar you get so many warnings of missing or incorrectly configured nodes that I gave up. Fortunately our systems sound similar and I have tried to keep to a standard palette so it might be useful.

A potential problem with others using my flows is that I have modified a system file to allow use of persistent context variables which allow me to preserve values between restarts and for diagnostics - the context variable are then automatically saved to an external file every 30 secs - the Node-RED information tells you how to implement it by modifying a configuration file. Another possible problem is that I am using a Raspberry Pi and some of my code for diagnostic displays of CPU and other operating system information may differ.

I am not sure how the Community views outside information but in general I find it useful to document what I do and I note that many members have a link to their web sites in their profiles.

System Loads: On your concerns expressed in communication with @Stefanie on system loads I have a comprehensive diagnostic dashboard which displays CPU load, RAM usage, disk use etc as well as uptime for the OS, OS version and network address. The CPU load is low and I have done a few experiments - initially I limited some of my flows but leaving them at the 5 sec updates did not noticeably increase the CPU load from about 5% average over the 4 cores. Memory use is about 30% of the 1 Gbyte available on the Raspberry Pi 3B+. It is probably best if I insert a screenshot.

I can not give definitive information on data usage to the VRM as i am currently experimenting with use of MQTT using the Victronenergy broker but I would have noticed if it was much over 1 Gbyte a month as I use a tethered mobile phone. I ought to look into adding that to the dashboard as MQTT potentially increases data flow a lot.

EDIT: I now have added some data usage information to my diagnostic dashboard and the combined Wifi Tx and Rx rate on the Venus OS is ~2 Kbytes/sec with additional peaks when deploying changes.

Hi

I made a dashboard in node red for my rv. I have here a short video of it. No sound only the video. ;)

https://youtu.be/FJArsuiamP0

As mentioned just copying and use the code is not as straight forward.

Here my current implementation

• Power2Heat control and PV-forecast based BatteryLife
  1. Assures highly reactive power usage of the warm water heating and minimal impact on battery (was not assured by myPV device itself). In addition the control assures a stable water temperature of 74°C loaded into the buffer tank.
  2. Sets the minimum SOC according to the estimated PV forecast for next day. This feature allows a much more dynamic battery usage than natively supported by VenusOS.
  
• Heating control and automatic activation/deactivation
  Combines control of wood chip heating, buffer and floor heating.With that ffeature the wood chip heating can be also fed by wood billets and sends reminders for requested or completed tasks.
  
• Weather Station (actuals and forecast)