WS2811 LED Strip. Flat AHF push button X2. Arduino Nano. Buzzer. Li-ion battery. Switch. M3 x 50mm spacers. M3 x 20mm spacers. M3 x 10mm bolts. WS2811 LED Strip Pinout. The LED strip gets power ...

Piezo Buzzer (2-pin): Buzzer Pin Arduino Pin Positive D7 Negative GND Explanation: RFID Reader: The code reads the UID from the RFID card. If the UID matches the authorized UID, it grants access.

1 string of 50 addressable RGB LED lights; 1 Arduino; 1 micro-USB cable; 1 9-volt battery holder with a switch; 1 9-volt battery; ... Connect the lights to the three-pin plug.