Very nice solution...
Fully functional
The layout board of this nice little app is way too small and the components too limited for a real professional Code Lock.
The circuit is hooked to 2 4 5 7 in this example.
Some code switch would make changing combination easy.
More gates would allow a sequential input of a combination to make it more safe.
So this Code Lock works just fine but the four digits combination will be accepted in any sequence!
I will try to add some sequence to it although that limitation of workspace and parts. Leaving the displays away it'll work but won't be looking as good and less professional.
In the meantime...
Have fun playing with it...
✌️👽👍💫🌟✨💥💢
