PowerShell Script to Keep PC Awake

KeepAwake.ps1

## KeepAwake.ps1
## Use SendKeys to toggle the Scroll Lock key
##
## This will keep the PC awake and prevent
## it from going to sleep.
##
## Author: Chris Pietschmann (https://build5nines.com)

$timerseconds = 60 * 4 ## Every 4 minutes

$myshell = New-Object -com "Wscript.Shell"

while ($True -eq $True) {
    $myshell.sendkeys("{SCROLLLOCK 2}")
    Write-Output "Keeping Awake... $(Get-Date)"
    Start-Sleep -Seconds $timerseconds
}

simpler in a profile function, sleeps for 4 mins and scrollLock on/off
cat function:myAlive

$WShell = New-Object -com "Wscript.Shell"
while ($true) {
$WShell.sendkeys("{SCROLLLOCK}")
Start-Sleep -Milliseconds 100
$WShell.sendkeys("{SCROLLLOCK}")
Start-Sleep -Seconds 240
}