I'm new to the Arduino and would like to build the Frequency Counter using Arduino (http://circuitdigest.com/microcontroller-projects/arduino-frequency-cou…) which is a great project but I have a few questions:
1 - For the LCD panel the article refers to a related article "Interfacing 16x2 LCD with Arduino (http://circuitdigest.com/microcontroller-projects/arduino-lcd-interfaci…) which shows the LCD part number as: JHD_162ALCD; I'm in the USA, and I have not been able to source this part at all. Can anyone provide a source for the part or an alternative equivalent part that would work? If you can, please provide source name/website and part number.
2 - The first line n the sketch for the Frequency Counter project shows an #include that references "LiquidCrystal.h": #include <LiquidCrystal.h>
Is the LiquidCrystal.h part of the Arduino IDE or is it a file I have to source from elsewhere? Can you provide specifics, i.e. where to get the file? Is that file specific to the JHD_162ALCD LCD or is it required for any LCD?
Thanks for any assistance!