The code I provided is just an example to get you started with both modules, but the possibilities are a lot bigger, you can check my other projects using the modules. LCD display is wired on 5v, GND, SDA with Analog4 and SCL with Analog5ĭon’t forget to download the libraries if you don’t have them already, go to Arduino IDE, Sketch, Include libraries, Manage libraries, then search for the name of the library as in the code and install it. Keypad pins (from 8 to 1) it’s written on the kaypad, are wired with the Arduino UNO digital pins from (9 to 2). The LCD I use is a i²c it has only 4 pins and easier than the standard version. The Keypad I use is 4×4, it’s very useful and permits you to enter values or codes to you projects, I used it in many locks, alarm clocks, values input… It has 8 pins wired with Arduino Digital pins and the Matrix should be declared in the code, you’ll find examples in the Arduino Keypad built-in library. Hello everyone, this is a quick tutorial on how to use the keypad with Arduino and a LCD i²c screen.
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