[SOLVED] Best approach delay a flickering contact, proxy and/or timer or?

Setup, Configuration and Use Scripts & Rules
2

Another way is to use the Expire binding, this will eliminate the need to use a timer and lambda in your rule. What you have above will work fine but be aware if you have several rules that use lambda’s there’s a chance it may have problems when two or more try to run at the same time.

Also see this example for anti flapping in a rule https://community.openhab.org/t/rule-optimization-window-open-reminder/39451/12?u=h102

If your asking how to use this logic in your rule.

when sensor_x update
 then
createTimer(now.plusSeconds(1)) [ | proxy_sensor_x.sendUpdate ]

You need to define the variable Timer, the rule will look similar to this:

var Timer sensorTimer
rule "your_rule"
when 
Item sensor_x changed
then
if(senosr_x == ON){
sensorTimer = createTimer(now.plusSeconds(1), [ |
proxy_sensor_x.postUpdate(ON) 
])
}
end

Just for more idea’s here’s an example for a motion detector.
If your sensor triggers ON/OFF (0 and 1 in the example) several times you can use a counter in the rule similar to this:

var timerCount = 0
rule "timer"
when 
	Item Esp_Easy_Motion changed from 0 to 1
then
	if(Esp_Easy_Motion.state != NULL) {
		timerCount +=1
		timer.postUpdate(timerCount)
	}
end

rule "timer count"
when
	Item timer changed 
then
	if(timerCount >= 3 && Couch_Light.state != ON){
		Couch_Light.sendCommand(ON)
		timerCount =0
		timer.postUpdate(timerCount)
	}	
	else if(timerCount >= 3 && Couch_Light.state != OFF){
		Couch_Light.sendCommand(OFF)
		timerCount =0
		timer.postUpdate(timerCount)
	}
end

Just adjust the counter number to suit your needs.