Introduction: Arduino LCD Keypad Shield

Picture of Arduino LCD Keypad Shield

Step 1: Library

You will need to install the Keypad library.

Step 2: Code

Here is my modified code from the example code included with the library. I added the function to turn on the LED on digital pin 13 when the select button is pushed and to turn it back off then the select button is released.

Step 3: NOTE:

Do not changed digital pin 10. This pin is used to control the back light of the LCD. If its set to output and high it may damage you LCD shield.

Comments

VictorC13 (author)2017-10-02

Hi

Thank you for such great information, I now have a functional LCD. The only issue is that the UP button does not work, could it be that I have a broken LCD shield? I am using a shield made by SainSmart. Thank you again

Victor

robmawe91 (author)VictorC132017-10-02

It could be the LCD shield or to code. I'm
not sure if yours works the same as mine. You can check the shield by
using a multimeter and check the continuity of the button and then
follow the traces to the pins and recheck. You should only have
continuity if the button is pressed. If that checks out it could either
be a problem with the Arduino GPIO connectors (they ware out over time)
or could be a problem with the library Pinout. If thats the case you can
modify it or #define in the sketch.

About This Instructable

5,740views

13favorites

License:

More by robmawe91:How to change the resistance of a resistor with another resistor. Reading schematics and PCB boards 101: Electronic circuit reference abbreviations and symbolsMake a replacement inductor coil Fix a Cree LED UltraOK ZS-2 Flashlight and Mod
Add instructable to: