F13 No Idle

$dummyshell = New-Object -com "Wscript.shell" #new shell
$rn = 0; #rn for repeated number of time.
while(1) #while(true)
{
$dummyshell.sendkeys("{F13}") #sends F13 to Shell window
$rn++ #increments Repeat number by 1
Function Sleep-Progress($seconds) {
    $s = 0; #Used to subtract from $seconds to see how many seconds are left and to figure out rough progress
    Do {
        $p = [math]::Round(100 - (($seconds - $s) / $seconds * 100)); #make progress roughly out 100%
        Write-Progress -Activity "Until next scan..." -Status "$p% Complete:" -SecondsRemaining ($seconds - $s) -PercentComplete $p; #the progress bar
        $sr = $seconds - $s #Second Remaining until repeat
        $Title = "$sr - $rn" #Change the title to show Seconds remaining and number of repeats
        $host.UI.RawUI.WindowTitle = $Title
        [System.Threading.Thread]::Sleep(1000) #sleep for 1 second
        $s++; #add one $s
    }
    While($s -lt $seconds); #do the above while $s is less than $seconds

}
Sleep-Progress 30 #Change this number to how many seconds you want before it repeats

}