hi to everybody
this is my first experience with Arduino and i please for understanding.
i have bought Arduino Mega 2560 r3 board and open smart 3" tft display shield.
link for display ( https://www.aliexpress.com/item/OPEN-SMART-3-0-inch-240-400-TFT-LCD-Display-Breakout-Board-for-Arduino-UNO-R3/32749982712.html?spm=a2g0s.9042311.0.0.27424c4dDPR0eZ )
link for library ( https://drive.google.com/drive/folders/0B6uNNXJ2z4Cxd21NUUdBeUR6M28?usp=sharing )
i connected tft to borad following instructions from manufacture, but i dont know how to start/test this LCD.
if someone can help me and give me some basic instructions how to make this i would appreciate that.
in attachment are photos of TFT and board, photo of connection and screenshot of instructions for connection.
thank you
Yes, you can run your 3.3V display with your 5V MEGA2560.
Just buy thirteen level shifter chips.
Life is a lot simpler with a proper 3.3V board e.g. Zero, Due, STM32, Teensy3.x, ...
MCUFRIEND_kbv already supports this OTM4001A. It appears to be a SPFD5420.
You have to enable the SUPPORT_9326_5420 macro in MCUFRIEND_kbv.cpp
I strongly advise you to remove any library from Open-Smart.
They have simply hacked an old obsolete version of my MCUFRIEND_kbv library.
Install the proper MCUFRIEND_kbv library via the IDE Library Manager.
David.
Edit. I used your link to see the board photos and description. i.e. a OTM4001A 3.3V board.
Your JPEGs show a Open-Smart Shield pcb without any components mounted.
Why did you buy the "bare" pcb version?
The Open-Smart Shield is better value for money.
The proper shield contains level-shifting buffers. It can plug straight into Uno or Mega.
