Stickperson
New Member
This is basically 2 questions. For a final project in school, one of my ideas is to construct a keypad alarm system (very simplified). I am planning on having a 12 digit keypad hooked up so when the sequence 1 2 3 4 is pressed, the word OPEN scrolls on seven segment displays, if it's wrong, it scrolls CLOSED (I know how to do this). My 2 main questions are:
1 - How exactly do I wire up a keypad? Here is the one I am planning to buy:
Switches: Keypad - 12 Button
2 - How do I wire the circuit so when the correct sequence 1 2 3 4 is pressed, the word OPEN scrolls? I know how to wire the 1 2 3 4, but I don't know how to sequence it. For example, if 2 1 3 4 is pressed, the seven segments scroll CLOSED.
Thank you in advance.
1 - How exactly do I wire up a keypad? Here is the one I am planning to buy:
Switches: Keypad - 12 Button
2 - How do I wire the circuit so when the correct sequence 1 2 3 4 is pressed, the word OPEN scrolls? I know how to wire the 1 2 3 4, but I don't know how to sequence it. For example, if 2 1 3 4 is pressed, the seven segments scroll CLOSED.
Thank you in advance.