Keypad door lock
I want to build a keypad door lock on an Arduino Uno with a 4x4 matrix keypad, a 5V solenoid lock, a single-channel relay and a 16x2 I2C LCD.
Parts
Arduino Uno R3 CH340G ATmega328P Board In stock
4x4 Matrix Keypad In stock- 16x2 I2C Character LCD Display Module (1602 + PCF8574, pre-soldered) In stock
5V Solenoid Lock In stock
5V Single Channel Relay Module In stock
USB Type A to B Cable (1m) In stock
12V 2A DC Power 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.