I have been trying to get one switch to make a group of lights turn on. This is fairly easy with the use of Groups... Unfortunately as is mentioned in the forums, refreshing the status does not work on a timer like Smartthings. (This is a good thing). In any case, I wanted a simple straight-forward way to refresh only the switches/devices I cared about. The following is an app based of Pollster (Smartthings), but allows setting the number of seconds for up to four groups of devices. The wife is happy again, so I thought I would share.
/**
* Hubi-Poll.
*
* Based off Pollster, this app works behind the scenes and periodically calls 'poll' or
* 'refresh' commands for selected devices. Devices can be arranged into
* four polling groups with configurable polling intervals down to 1 second.
* Smartthings polls automatically every 10 seconds, which is overkill, but useful for some cases
* I am using the app to use one switch to control a group of switches.
*
*
* Unless required by applicable law or agreed to in writing, software
* distributed is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* --------------------------------------------------------------------------
*
* Version 1.0
*/
definition(
name: "Hubi-Poll",
namespace: "tchoward",
author: "thomas.c.howard@gmail.com",
description: "Poll or refresh device status periodically",
category: "Convenience",
iconUrl: "https://s3.amazonaws.com/smartapp-icons/Convenience/Cat-Convenience.png",
iconX2Url: "https://s3.amazonaws.com/smartapp-icons/Convenience/Cat-Convenience@2x.png")
preferences {
(1..4).each() { n ->
section("Scheduled Polling Group ${n}") {
input "group_${n}", "capability.polling", title:"Select devices to be polled", multiple:true, required:false
input "refresh_${n}", "capability.refresh", title:"Select devices to be refreshed", multiple:true, required:false
input "interval_${n}", "number", title:"Set polling interval (in seconds)", defaultValue:10
}
}
}
mappings {
path("/poll") {
action: [ GET: "apiPoll" ]
}
}
def installed() {
initialize()
}
def updated() {
initialize()
}
def onAppTouch(event) {
LOG("onAppTouch(${event.value})")
watchdog()
pollingTask1()
pollingTask2()
pollingTask3()
pollingTask4()
if (settings.restPoll) {
settings.restPoll*.poll()
}
if (settings.restRefresh) {
settings.restRefresh*.refresh()
}
}
def onLocation(event) {
LOG("onLocation(${event.value})")
watchdog()
}
def pollingTask1() {
//LOG("pollingTask1()")
if (settings.group_1) {
settings.group_1*.poll()
}
if (settings.refresh_1) {
settings.refresh_1*.refresh()
}
runIn(state.seconds[1], pollingTask1)
}
def pollingTask2() {
//LOG("pollingTask2()")
if (settings.group_2) {
settings.group_2*.poll()
}
if (settings.refresh_2) {
settings.refresh_2*.refresh()
}
runIn(state.seconds[2], pollingTask2)
}
def pollingTask3() {
//LOG("pollingTask3()")
if (settings.group_3) {
settings.group_3*.poll()
}
if (settings.refresh_3) {
settings.refresh_3*.refresh()
}
runIn(state.seconds[3], pollingTask3)
}
def pollingTask4() {
//LOG("pollingTask4()")
if (settings.group_4) {
settings.group_4*.poll()
}
if (settings.refresh_4) {
settings.refresh_4*.refresh()
}
runIn(state.seconds[4], pollingTask4)
}
private def initialize() {
LOG("initialize() with settings: ${settings}")
state.seconds = new int[5]
Random rand = new Random(now())
def numTasks = 0
(1..4).each() { n ->
state.seconds[n] = settings."interval_${n}".toInteger()
def size1 = settings["group_${n}"]?.size() ?: 0
def size2 = settings["refresh_${n}"]?.size() ?: 0
safeUnschedule("pollingTask${n}")
if (state.seconds[n] > 0 && (size1 + size2) > 0) {
LOG("Scheduling polling task ${n} to run every ${state.seconds[n]} seconds.")
runIn(state.seconds[n], "pollingTask${n}")
numTasks++
}
}
LOG("state: ${state}")
}
private def safeUnschedule() {
try {
unschedule()
}
catch(e) {
log.error ${e}
}
}
private def safeUnschedule(handler) {
try {
unschedule(handler)
}
catch(e) {
log.error ${e}
}
}
private def restart() {
updated()
}
private def about() {
def text =
"Version ${version()}\n${copyright()}\n\n"
}
private def version() {
return "Version 1.0"
}
private def copyright() {
return "No Copyright"
}
private def LOG(message) {
log.trace message
}
. It solved a few problems where a device state change wasn’t seen by WebCoRE during a 4 second window. Again thank you 
