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Found 1 result

  1. Hello I hope you can understand my english I have a texas instruments tm4c123gxl with a SainSmart IIC/I2C/TWI Serial 2004 20x4 LCD Module. I will connect this Display over I²C. For the 5V Supply voltage i have use the VBus on the tm4c... For the SDA/SCL i have use the pin PA6 and PA7. Does it work like this? or need a Logic Level Converter - Bi-Directional for the SDA/SCL Line? from 3,3V to 5V. I have use a Pullup resistor for the Line SDA/SCL, how in the datasheet from the tm4c. And i have use this Code: #include <Wire.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x3F, 20, 4); // set the LCD address to 0x20 for a 16 chars and 2 line display void setup() { lcd.init(); // initialize the lcd // Print a message to the LCD. lcd.backlight(); lcd.print("Hello, world!"); } void loop() { } But my display show nothing only LED backlight.