oh my gawwwwwwwd your so damn good OwO

I must congratulate you... your interesting way of makeing doors open and close is... interesting... using observers as tripwire hooks could be useful for more then doors!!!

Good work making the video both short and clear (particularly without either voiceover or subtitles) 👍

Like pressure plate based designs this wouldn't be mob proof, but – in this case – that could be [largely] remedied by placing the obverservs and tripwire one block higher (although that would require the player to jump to open/shut the door.)