Confusion with Auto-things

I found a video for an extremely fast cobble generator and wanted to build it at my base. I'm still confused about the auto-machine rules, and was wondering if this was allowed. Here's a link to the video:


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PandaBush, is it fully automatic and does it use redstone for the automation? If so then it is not allowed. Something like water pushing mobs into lava is allowed since there isnt redstone that is automating the process and constantly running. Also, TNT does not work above sea level or in claims unless disabled so this most likely would not function properly.