My gut says the resistor isn't a problem even though I don't know what it's supposed to do. What's the function of that display pin that it's supposed to be connected to ?Belial88:
First I went by the same wiring I had as followed by the adafruit tutorial, and the screen read ‘lcd smartie’ like it says in the code but i couldnt get lcd smartie to work (instead of text, its all 1234234123123, and it’d change only when text changed), then i rewired it to be exactly like in the tutorial for lcd smartie and i just get no text at all.Could it be because I dont use a resistor as the lcd smartie guide says to? The adafruit guide says there’s already a resistor in there?
I’d go back to the wiring that made ‘lcd smartie’ appear. Then it’s a matter of getting software, on the PC and on the Arduino, to talk to each other. How does the LCDsmartie setup the virtual COM port it uses ? Is it the same asthe Arduino IDE uses to program the Arduino ? Or do you have to switch USB ports ? How familiar are you with terminal emulator programs on the PC, like the old HyperTerminal or TerraTerm or PuTTY or my fav, RealTerm ? My thinking is to make up a simple LCDsmartie message using one of them to get the PC to Arduino ‘channel’ working, and then figure out why the PC end of the LCDsmartie program isn’t working.
BTW did the LCD display … exactly …
LCD SMARTIE
on Arduino