consider this snippet, compiled with Arduino IDE: PROGMEM char charSet[] = { 0x0, 0x8, 0x4, 0xc, 0x2, 0xA , 0x6, 0xE, 0x1, 0x9,0x5, 0xD, 0x3,0xB,0x7,0xF }; char reversed[] = { 0x0, 0x8, 0x4, 0xc, 0x2, 0xA , 0x6, 0xE, 0x1, 0x9,0x5, 0xD, 0x3,0xB,0x7,0xF }; char ff; for (int i=0; i < 16; i++) { S…

PROGMEM char array

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