AutoClicker.ps1

#########################################################################
$StartupDelay       = 3000 # Time to wait before starting in milliseconds
$TimeBetweenClicks  = 5000 # Time to wait between clicks in milliseconds
#########################################################################

Add-Type -AssemblyName System.Windows.Forms
Add-Type -AssemblyName System.Drawing
$signature=@'
[DllImport("user32.dll",CharSet=CharSet.Auto,CallingConvention=CallingConvention.StdCall)]
public static extern void mouse_event(long dwFlags, long dx, long dy, long cButtons, long dwExtraInfo);
'@
$SendMouseClick = Add-Type -memberDefinition $signature -name "Win32MouseEventNew" -namespace Win32Functions -passThru

Start-Sleep -Milliseconds $StartupDelay
while (1) {
    $x = [System.Windows.Forms.Cursor]::Position.X
    $y = [System.Windows.Forms.Cursor]::Position.Y
    # Uncomment below lines to manually specify click location
    # $x = 100
    # $y = 100
    # [System.Windows.Forms.Cursor]::Position = New-Object System.Drawing.Point($x, $y)
    $SendMouseClick::mouse_event(0x00000002, 0, 0, 0, 0); # Left click down
    $SendMouseClick::mouse_event(0x00000004, 0, 0, 0, 0); # Left click up
    Write-Output "X: $x | Y: $y"
    Start-Sleep -Milliseconds $TimeBetweenClicks
}