I have a uLCD32-PTu and a uLCD32-PT that I have been using with a Sainsmart Nano, an Uno and a Mega2560, but I keep having communication issues between the boards and the screens.
Is there a recommended baud rate for using these screens for temperature monitoring and some off/on controls for a few relays?
I have used 115200, all the way down the line to 4800 with little changes each time. I know it's something to do with communication to the screen because my computer's serial monitor reads all sensor data just fine while the screen will display either 000 or 185.