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@mschaeffler/node-red-debounce

v1.3.0

Published

Node Red nodes to debounce a payload.

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Links

Git

Maintainers

mschaefflermschaeffler

Keywords

node-reddevounce

Readme

@mschaeffler/node-red-debounce

Node Red nodes for debouncing data.

image of example flow

Install

$ npm install @mschaeffler/node-red-debounce

debounce

The debounce node is for a general purpose debouncing of any data (string, boolean, number ...):

  • What data is debounced can be selected with the property property.
  • filter: The data can be checked for a change before the debounce.
  • Debouncing means here that the node waits time time before sending out the last received message.
  • It can be changed from debouncing to blocking mode.

Input

|msg. | type | description | |:-------|:-------|:----------------------------------| |topic | string | name of the input channel. | |payload | | input value for topic. | |debounceMs|number| if set, this is the debounce time for this message.| |invalid |boolean | if true, this message is ignored. | |reset |boolean | if true, resets the node; if combined with a topic, only this topic is reseted.|

Output

|msg. | type | description | |:-------|:-------|:----------------------------------| |topic | string | same is in corresponding input message.| |payload | | data evaluated out of the input message.|

Parameters

|config| type | description | |:-----|:-------|:----------------------------------| |Property| string | defines the message property to be used as payload.| |Time | number | debouncing time.| |Block |boolean | block instead of decounce. this means that an incoming message is sent out immediately and afterwards for time all following messages are blocked| |Filter |boolean | shall messages received with unchanged data be ignored.| |Restart |boolean | shall the debouncing time be restarted with every received message.| |byTopic |boolean | shall resending be done on a topic base.| |Status |boolean |shows the actual value as a node status.|

debounce N

The debounce N node is for debouncing of numerical values:

  • What data is debounced can be selected with the property property.
  • filter: The value can be checked for a change greater then before the debounce.
  • This threshold can be an absolute or a relative value.
  • Debouncing means here that the node waits time time before sending out the last received message.

Input

|msg. | type | description | |:-------|:-------|:----------------------------------| |topic | string | name of the input channel. | |payload | | input value for topic. | |debounceMs|number| if set, this is the debounce time for this message.| |invalid |boolean | if true, this message is ignored. | |reset |boolean | if true, resets the node; if combined with a topic, only this topic is reseted.|

Output

|msg. | type | description | |:-------|:-------|:----------------------------------| |topic | string | same is in corresponding input message.| |payload | number | data evaluated out of the input message.|

Parameters

|config| type | description | |:-----|:-------|:----------------------------------| |Property| string | defines the message property to be used as payload.| |Time | number | debouncing time.| |Filter in |boolean| data must differ at least by this value; it can be an absolute number or a percentage.| |Filter out|boolean| shall messages with unchanged data not been sent.| |Restart |boolean | shall the debouncing time be restarted with every received message.| |byTopic |boolean | shall resending be done on a topic base.| |Status |boolean | shows the actual value as a node status.|

Example Flow

example flow

Author

Mathias Schäffler

License

LGPL-2.1