const int strobe = 7; const int clock = 9; const int data = 8; void sendCommand(uint8_t value) { digitalWrite(strobe, LOW); shiftOut(data, clock, LSBFIRST, value); digitalWrite(strobe, HIGH); } void reset() { sendCommand(0x40); // set auto increment mode digitalWrite(strobe, LOW); shiftOut(data, clock, LSBFIRST, 0xc0); // set starting address to 0 for(uint8_t i = 0; i < 16; i++) { shiftOut(data, clock, LSBFIRST, 0x00); } digitalWrite(strobe, HIGH); } void setup() { pinMode(strobe, OUTPUT); pinMode(clock, OUTPUT); pinMode(data, OUTPUT); sendCommand(0x8f); // activate and set brightness to max reset(); }