What components would you need to build a Arduino which turns on your main lights at a certain time

Other Hardware Home Automation
1

what would i need to build this project

2

You will need

  1. Arduino (to run code obviously :P)
  2. Relay (turn turn ON/OFF main light)
  3. RTC clock module (to allow relay control at certain time)
  4. power supply (to power all of above)
3

you don’t need arduino for this, you can buy a programmable timer

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4

Sorry I mean, you use an arduino to programme a switch to turn on a light switch(the one below)

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5

so you are looking for mechanical turning from a motor controlled by arduino?

6

Yes I am. What would I need

7

have a look here Retrofit your light switch with this remote-controlled device | Arduino Blog