Keypad pin 7 to Arduino digital 6 //R2; ... Although the code is an entry-level one, it includes a secret key option that will need to be entered on the keypad. The Serial Monitor will tell whether ...

Not overly confident in his code, ... 45 thoughts on “ Arduino Keypad Door Automation ” Oscar Martinez says: November 1, 2013 at 10:17 pm ...

He’s constructed an Arduino keypad door lock — without using any proper fastening hardware! ... Not overly confident in his code, ...

Create a Keypad Lock. Put Arduino to work protecting your secrets. This project is a keypad-controlled lock that will allow the user to select a six-digit secret code and lock out anyone without it.

Open the Arduino software and paste the Arduino code (the text in the box near the bottom of the post) into a new sketch. Click Sketch > Verify / Compile to make sure the code is properly in there.