Ok, I just recently started messing around with this. I made a simple thermometer with time using the Arduino Mega 2560, DHT11, DS3231 and LCD screen. I got it to work with a 12 hour format. (I struggled to find libraries to work with the Mega). I wanted to use a larger display so I got a 3.2' TFT with an Arduino Mega Shield (ILI9481). I found some other fonts that I wanted to use that work, and I believe I modified the original code to work with the TFT, but the code for the 12 hour format does not seem to work with it, I can get the 24 hour format with no problem. It also does not display the temperature.
There does not seem to be alot of examples using the Mega. If someone could help me, just let me know what I need to try.
Thanks