LiquidCrystal_I2C lcd(0x27,20,4) // set the LCD address to 0x27 for a 16 chars and 2 line display This is the code exactly as I try to compile it, This is the entire scetch directly from the seller.
I will post the sellers test code, and the error messages. I am sure that the sellers code is good, but I am not understanding the issues. I dont understand why the sellers own code wont work. I tried to run the test code that The seller gives with the LCD, and I get 2 errors when it tries to compile. I tried the I2C_scanner, and it loads, but I am getting nothing back from it. Note that on the Micro, the Serial class refers to USB (CDC) communication for TTL serial on pins 0 and 1, use the Serial1 class. Used to receive (RX) and transmit (TX) TTL serial data using the ATmega32U4 hardware serial capability. Support TWI communication using the Wire library. Note that on the Leonardo, the Serial class refers to USB (CDC) communication for TTL serial on pins 0 and 1, use the Serial1 class. will tell which pins to use for which board. Your Leonardo is based on the ATmega32u4.Ī quick look at the correct product page linked from To be fair, he did mention that was for ATmega328 based boards.
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