Random selection of multiple items

[rossko57]

Ideas sources

Simulate presence by randomly switching lights - any rules existing?

Hi Dirk, This is how I do it: items: Group Lights_Random rules: var Timer tRandomLights = null rule "Randomly turn on & off lights between 07.00-23.00 if before or after sunset and if alarm is activated" when Time cron "0 */10 7-23 * * ?" then if ((AlarmMode.state == 2) && (now.isBefore((Sunrise_Time.state as DateTimeType).calendar.timeInMillis) || now.isAfter((Sunset_Time.state as DateTimeType).calendar.timeInMillis))) { // Only turn a light on/off ocasionally if ((new java.…

Philips Hue - Random Lights

Here is a rule I came up with to randomize the Hue lights throughout the house. I wanted a ‘party mode’ which constantly changes colors. This did the trick (changes every 2 seconds, for a little over 3 minutes): Items: Group:Switch:OR(ON,OFF) LightsLava "Lava Lamps" <hue> (All) Number Scene_Lighting "Scene (Lighting)" <colorwheel> Rule: rule "Lighting Scene - LightsLava Switch On" when Item LightsLava received command ON then var Number fadeCounter //RAPIDLY …

Randomize members list order in for loops

When using for loops for away ghost modes, or party random lights most of the samples does not randomize the order of light switching. A simple and quick way of randomizing the order of members in a group for use in a for loop is to replace the sortBy function with a random function. B_All_Lights.members.sortBy[g|(Math::floor(Math::random*100))].forEach(light,i | logInfo("Vacation","Hello Light" + light) ) The above function will output the members of the B_All_Lights in a ran…