Then connect the last two pins on the 4x4 keypad module to digital pins 3 and 2 on the arduino.
How to make photosyntis door lock system.
This is a video on how to make a portable door lock.
Very easy to make.
You need adafruit finge.
How to make fingerprint door lock at home from this tutorial you can make awesome fingerprint sensored locking system for your door.
It satisfied a deep need in my life.
Fit the latch and faceplate into the door.
After that connect the lcd to the arduino.
How to make automatic door lock at home automatic door lock system at home amazing diy idea how to install automatic door closer bbmw mechanical.
Read about it more here.
You can take it on trips to use in motels or use at home public bathrooms etc.
Connect the first six pins on the 4x4 keypad with the a0 and a5 pins on the arduino.
First connect the 4x4 keypad to the arduino.