Single value subflow to be used as filter after processing node

A subflow is a collection of nodes that are collapsed into a single node in the workspace. Detailed explanations are available in Node-Red documentation: Node-Red Subflows.

A subflow already exists in STM32CubeMonitor: the Single value subflow. It is available from the left menu. The purposes of this subflow are the following:

1. Data filtering to extract only one variable after the "processing node" step .
2. Modifying the message to fit with standard widgets such as gauges.
3. Limiting the number of messages to a maximum of 10 msg per second.

Details of the subflow are available by double-clicking the image below:

This template can be modified, for example to increase or reduce the number of message per second. It impacts all the single value subflows already used in your current flows.