Node-Red: Function Hall Sensor Pulses to km/h

[@edenilsoncarneiro6642]

Hello. rayou example to to freeze a certain value?

[@ruwindustries]

What exactly do you mean by freeze?

[@edenilsoncarneiro6642]

@@ruwindustries Thanks for answering. It would be like this: every hour I read the production value but freezing it in another variable to keep it historical. Example: 06hrs read 1200, 07hrs read 2400, 08hrs read 4500. I want to freeze this hourly value.

[@ruwindustries]

You can push the current value to a history array - this adds the values to the end to the array

[@edenilsoncarneiro6642]

@@ruwindustries Are you one example in canal?? Im beging in javascripit

[@ruwindustries]

NO unfortunately not