Subscribe to the MicroZine Newsletter and collect your free microcontroller Ebooks, download project code and more...

How to Unlock the LCD Keypad project

This lcd keypad project will show you how to use an LCD (HD44780) and a 12 key keypad using only a single 8 bit port.

Both keypad and and LCD are fully functional - all 12 keys are readable and the LCD can be written and read.

It doesn't use any special tricks and even uses the existing MikroC LCD library routines - so you can even port it to another compiler!

All you do is call two routines: one before using the LCD and one before using the keypad. These set up each peripheral so that they co-exist on the same port.

You can even use the LVP mode when the routines are used on the RB port but in this case you loose a column of keys - but you still have 8 which is a lot. (Note unstested in LVP mode).

The project is completely free.

To get the project unlock code please visit the E-Zine subscription page.

Locked Project Page: To jump to the project page click here 


New! Comments

Have your say about what you just read! Leave me a comment in the box below.



Privacy Policy | Contact | About Me

Site Map | Terms of Use



Visit our Facebook Page:

   Click Here



Recent Articles

  1. The TCS230 Color Sensing Chip: How it works and how to use it.

    How to use the TCS230 (/TCS3200) Color detector chip and easily add it to any of your projects.

    Read more

  2. Arduino millis

    How to use Arduino millis() for delays but still make the processor do work - Stop using delay()

    Read more

  3. [Arduino Tutorial] : How to use the 74HC595 shift register with shiftOut().

    The Essential Guide to the 74HC595; What it is and how you can easily use one in any of your projects.

    Read more

  4. Pic Programmer Types

    Which pic programmer do you need? This page discusses PIC programmers and gives some essential information on choosing or building your own programmer.

    Read more

  5. Arduino Pulsein: an easy way to measure pulse periods in microseconds.

    learn how to use Arduino pulseIn and pulseInLong to get the most accurate pulse measurement on an Arduino.

    Read more

  6. Multiple MCP23017 Interrupt tutorial for operating multiple interrupts from multiple MCP23017s.

    This MCP23017 Interrupt tutorial shows you how to connect interrupt outputs from several MCP23017s to a single microcontroller interrupt pin.

    Read more

Readers Comments

"I wanted to thank
you so so so much
for all the information
you have provided in
your site it's

SUPERB and FANTASTIC."

- Ranish Pottath

"This site really is
the best and my favorite.
I find here many useful
projects and tips."

- Milan

bursach<at>gmail.com<

"Awesome site,
very, very easy and nice
to navigate!"


- Matt
matt_tr<at>
wolf359.cjb.net


Learn Microcontrollers

"Interested in
Microcontrollers?"

Sign up for The
Free 7 day guide:

FREE GUIDE : CLICK HERE


"I am a newbie to PIC
and I wanted to say
 how great your
site has been for me."


- Dave

de_scott<at>bellsouth.net

"Your site is a great
and perfect work.
congratulations."


- Suresh

integratredinfosys<at>
yahoo.com

"I couldn't find the correct
words to define
yourweb site.

Very useful, uncovered,
honest and clear.

Thanks so much for
your time and works.
Regards."


- Anon

Back to Top