Given the limited memory available, I opted to support only a small subset of ASCII characters to ensure efficient performance. This selective approach allows me to maximize the display's functionality while keeping memory usage low. Below is the list of supported characters:

• A-Z (caps only)
• 0-9
• Space
• !
• "
• #
• %
• '
• (
• )
• *
• +
• ,
• -
• .
• /
• :
• <
• =
• >

By focusing on essential characters, the system can still convey meaningful information without overwhelming the memory. This subset covers common letters, numbers, and symbols frequently used in typical messages, ensuring the POV display remains useful and practical for various applications. If needed, additional characters could be supported later by optimizing other parts of the code or by swapping in new character sets dynamically via I2C.