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I have to interface 16x2 LCD and that too with the help of Shift register 74hc164 IC. So I want to change on my LiquidCrystal library. How can I make changes in it. It is showing error: LiquidCrystal lcd previously declared here.

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    it is unclear what you are asking ..... are you wanting to use a different LCD library? ..... with the help of Shift register 74hc164 IC is meaningless, for all we know, you could be using the 74hc164 for mechanical support under the LCD – jsotola Dec 11 '18 at 17:27
  • Please show us the code that throws this error during compilation – chrisl Dec 11 '18 at 21:50
  • I want to run the LCD which is connected with 74hc164 IC(Shift register). Pin Configuration: IC output pins Q0 to Q7 with LCD data pins D0- D7 , RS,EN pin for LCD with arduino, Clock pin of shift register IC with arduino. This all thing cannot be done by using the same arduino library. Therefore I want to customize it. – Akash Agarwal Dec 12 '18 at 14:07
  • How would I write code here. I am newbie. It cannot be written in comment – Akash Agarwal Dec 12 '18 at 14:21
  • LiquidCrystal is in the arduino installation folder, as opposed to your library folder. – dandavis Dec 12 '18 at 17:32

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