Arduino Leonardo - Electronical Lock
Geplaatst opNote that the servo isn't shown on the schematic.
For a clearer instructions of how to connect the keypad:
The rows are connected to pins 23, 22, 21, 20 and the collums are connected to pins 19, 18, 8.
![The Schematic The Schematic](https://cdn.bodanius.com/uploads/1/3c5c9b79eb66da2fce09f5346a90083edf2a706e67_x.png)