neazoi
Advanced Member level 6
Hello,
I am thinking of making a very simple morse encoder with embedded keypad and a pic16f84.
In order to have the minimum components possible, this keypad seems promising.
You basically connect all the rows and columns to the pic port pins. Hopefully the pic16f84 has 13 I/O pins, so a 6x6 matrix can be constructed for all letters and numbers, and the remaining pic pin for the morse code output.
My question is, how should I detect which key was pressed?
Somehow I need to detect if two pins of the pic are short circuited at any time.
I am thinking of making a very simple morse encoder with embedded keypad and a pic16f84.
In order to have the minimum components possible, this keypad seems promising.
You basically connect all the rows and columns to the pic port pins. Hopefully the pic16f84 has 13 I/O pins, so a 6x6 matrix can be constructed for all letters and numbers, and the remaining pic pin for the morse code output.
My question is, how should I detect which key was pressed?
Somehow I need to detect if two pins of the pic are short circuited at any time.