The connection of 4 by 4 keypad to pic18f46k22

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The connection of 4 by 4 keypad to pic18f46k22

Postby karthi06 » Sat Mar 15, 2014 12:50 pm

Hi,

Currently i am developing a system that can display the numbers once the keypad has been pressed.The coding for the system works well in proteus software,but in hardware nothing happens once the keypad has been pressed.I use 1% tolerance resistors for each of the rows and column of the keypad.I am also attaching the connection of my keypad in proteus. Hope you'll would help me to solve the problem.

Thank you.
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keypad conn.jpg
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Re: The connection of 4 by 4 keypad to pic18f46k22

Postby ober » Mon Mar 17, 2014 9:48 pm

Can you do a LED blinking program first? Makesure the LED blinking program can blink actual hardware LED.
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