Always use the PROGMEM keyword (for AVR architectures) or const qualifiers (for ARM/ESP chips). This forces the array data to stay inside the larger Flash memory area rather than consuming limited RAM. Troubleshooting Common Errors Inverted or Swapped Colors

Before diving into the software, it is vital to understand why standard images (.png or .jpg) cannot be directly uploaded to a microcontroller.

A 320x240 display requires 320 240 2 = 153,600 bytes (150KB). That may exceed your MCU's flash. Solutions:

Ensures colors map correctly to display memory.