- Oct 22, 2011
- Reaction score
Ok now if you are using the example code all it does is turn your screen on and off no text.The end goal is add a keypad to Chuck F's RT sketch. Right now, I'm trying to learn how to use the I2c serial module with a 1602 LCD. I bought 2 of the modules, and a LCD. Got the modules, but the extra LCD hasn't come in yet. The LCD I'm using came in the Adafruit accessory kit. It has only one set of output pins, and I had already soldered header pins to it so I am plugging the LCD and the I2c module into a breadboard. I cannot get either I2C module to display anything but blocks with all pixels lit using the Sainsmart library and the I2c LCD example. I finally got a serial address scanner to work to verify the modules addresses, but no character display.
I'll go back to that tutorial you linked and play with changing the address.
I do have a 20x4 LCD with 2 sets of output pins. One set has a header soldered in. Can I solder one of the serial modules to the other without causing problems? I can't mount that LCD on the breadboard I have with the header on it, and mount the serial module too.
Edit: Yes, the example sketch has the Wire.h in it.
you are using 2 boards on is the master and the other one a slave