node-red-contrib-time-shift

Time shift node — outputs a delayed version of the input signal. Buffers incoming values and returns the value from the configured delay time ago. Useful for comparing current vs. past values or detecting trends.

Install

npm install node-red-contrib-time-shift

Usage

Send a numeric value as msg.payload. The node buffers values and outputs the one closest to delay seconds ago.

| msg | Effect | |-----|--------| | msg.payload = 21.5 | Current value to buffer and delay | | msg.delay = 300 | Override delay at runtime (in configured unit) | | msg.reset = true | Clear the buffer |

Output is suppressed until the buffer has accumulated enough data to cover the configured delay.

Output

msg.payload = delayed value.

{
  "timeShift": {
    "current": 21.5,
    "delayed": 19.8,
    "delay": 300,
    "actualDelay": 299.8,
    "bufferSize": 12
  }
}

License

MIT — sr.rpo