arduino alarm

I’m totally new to arduino and I have a project to hand next week
my goal is to make a project in which the user enter a specific time in a keypad and when that time comes the arduino will start an alarm then it will send order to the shower and the air conditioner to start the a screen will display two options whether the user wants the coffee machine to work or not if yes the arduino will turn it on if no the arduino will not do any thing .

OK.

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