Questions about external power source for 3 servo project

[player4362]

hi, im sort of confused about the external power source for my arduino project. i want to make an arduino project with 3 servo sg90 that draw power from wall socket, so my project can work as soon as i plug in the power(as long as i dont have to use battery). i want to make some sort of automatic keyboard clicker that can work about 6 hours.

i already have arduino uno r3, 3 servo and male to male jumper. but i still confused about the electric optimization and im having an anxiety about frying my component and such. and what other component i have to acquire?

i already doing a research, and none give me clear answer

edit: i asked an ai, im not sure, but i will using 2 different power source, each for powering arduino and the 3 servo. if you have guidance , let me know

[PaulRB]

@player4362

i want to make some sort of automatic keyboard clicker that can work about 6 hours. and what component i have to buy?

You want to fool an employer that you are working hard at home?

Whatever the reason, using servos to press buttons is crazy. There is usually a much easier way.

Is this a PC keyboard? Can you access the contacts on the PCB of the keyboard switches?

If it's a PC keyboard, you could get an Arduino pro micro or Leonardo and use the keyboard HID library to send random keystrokes at intervals.

[player4362]

im doing a self project, not an assignment or client. just doing this out of curiosity

[jim-p]

Safest/easiest way:
Buy a 5V, 3A or more power supply for the servos.
Power the Uno via USB.

[xfpd]