I have finally realized that the examples using software serial uses the configurable pins on a Mega and not the hardware serial ( Duh!)
Can someone show me a toddlers guide for using the hardware serial. I cannot understand how to link the nextion class to them
The default settings in the Iteadlib Arduino Nextion Library are configured for Mega on Serial2
The default wiring should be
Nextion TX to Mega RX2
Nextion RX to Mega TX2
Nextion GND to Mega GND
If your MCU (Mega in this case) cannot provide sufficient current (most cases)
It becomes necessary to supply Nextion 5V from separate 5V supply and not from Mega 5V
The Datasheet for the Nextion 3.5" recommends a 5V 1A supply.
I checked my power to my Nextion and it is registering at 4.56 volts. I ordered a USB TTL from ebay to power it my Nextion separately and not through the Arduino. I can at least test my Nextion direct through my windows machine.
I love those adapters. One word, if the chipset in them is not "brandname" Prolific, you will need to use an earlier version of the prolific driver. No issue to download from prolific the older version and and rollback the windows auto updated (newer version) to use the older one download from Prolific's site. I find v18.104.22.168 dated 2008-10-27 is fine.