Tactile Switch Buttons (12mm square 6mm tall) x 10 pack

These work best in a PCB but can be used on a solderless breadboard as shown in this tutorial. The pins are normally open (disconnected) and when the button is pressed they are momentarily closed. They come in a pack of 10.,no,Tutti i Prodotti,https://cdn-shop.adafruit.com/970×728/1119-03.jpg
Panel Mount 2.1mm DC barrel jack,AF-610,5,This power jack is designed to easily attach to a panel up to 8mm thick (0.315 or 5/16) and fit 2.1mm power plugs snugly and securely. Perfect for adding a power connector to your project enclosure.”