So tonight on Twitter, SlipperySeal decided to unleash his Raspberry Pi controlled railway signals upon us. Using a web page, you can enable or disable the lights. I decided to take it one step further and hijack the page with a cheeky bit of PowerShell. I pulled out the URLs called when you update the lights, and used the Start-Sleep cmdlet to time my fake clicks.
http://pimpmylight.catchpole.net/?update=green
http://pimpmylight.catchpole.net/?update=orange
http://pimpmylight.catchpole.net/?update=red
The PowerShell to do this was quite simple:
$wc = New-Object System.Net.WebClient
$uri = "http://pimpmylight.catchpole.net/?update=green"
while ($true) {
$null = $wc.DownloadString($uri);
"Green!";
Start-Sleep -milliseconds 500
}Three copies, running at three different time intervals, and we had this:
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