Dear all,
I jumped into this world few days ago, I set a project in my mind and trying to make it work.
I decided to replicate a working project found online, in order to build an airsoft defusable bomb, with multiple games.
I made the lcd to work (I was really happy about that to be fair) but I'm failing to connect the keypad.
The fact is that it doesn't seem to be a common keypad connection, since it seems to me that I should connect pin
1-D12
2-D13
3-A5
4-A4
5-A3
6-A2
7-A1
8-A0
Or maybe the opposite, I tried both as on the schema I'm using it's not specified.
The problem is that it is not a direct connection, pin 1,2,5 (or 4,7,8) are also connected to 2 buttons.
I'm not sure how these connections must be, therefore I just thought I could connect the middle of the wire with the specific pin of the button, with a direct connection.
I enclosed the schema I'm using, and the photos of how I did this middle connections
For the moment I can say that LCD and speaker are working quite fine, I still need to connect the REDLED and GREENLED on the schema, and I will not use the mosfet at all as I'm not interested in it.
Starting from this I will jump into coding the necessary things...
Hope somebody will help with this keypad connection, thanks for the help and enjoy your sunday 
EDIT: this is the main program used, then there are subsections for all the games, but i think this is enough to debug..
THis code is not mine, I found everything created by this guy on this youtube video, it's always nice to mention it
