Hello! Im quite new to arduino and it's capabilities. My project idea is that I want to make an alarm system that uses a buzzer, numpad, ultrasonic range sensor, an aruino of course and maybe a couple of LED:s.
I want the alarm to trigger once you get close enough to the sensor (less than 1m) and I simultaneously want the buzzer to start + the LED:s. And the only way to turn off the alarm is by a 4-digit code you input on the numpad.
My question is if these parts will work together and will I have to use an external power supply, like a batpack?
Arduino = Arduino UNO (MEGA328) rev 3 Buzzer = Piezo transducer 4.5kHz (or suggest a better one) Numpad = A basic 4x4. 2,54mm connection 8 pole Range senor = HC-SR04 LED:s = Just some basic lights A breadboard and cables (because I don't have access to a solder)
I appreciate any help I can get, as I said Im new to this. Thanks! (English isn't my native language so I apologize if anything was messy)