Two-step lock
I want to build a two-step lock on an Arduino Uno with an RC522 reader, a 4x4 keypad and an SG90 servo latch.
Parts
Arduino Uno R3 CH340G ATmega328P Board In stock
MFRC522 RFID Module In stock
4x4 Matrix Keypad In stock
TowerPro SG90 Servo Motor (180°) In stock
MIFARE Classic 1K RFID Card In stock
USB Type A to B Cable (1m) In stock
9V 1A Power Supply Adapter In stock
5V 5A Fixed Buck Converter Module In stock
Pins, wiring and code
The pin table, the wiring steps and the code for this build are in Soldr. Start this build on Soldr - you can change it before you buy.