#include void setup() { // put your setup code here, to run once: struct { bool fading; int color[3]; int saturation; } flash; EEPROM.begin(sizeof(flash)); flash.color[0] = 0; flash.color[1] = 0; flash.color[2] = 0; flash.fading = false; flash.saturation = 255; EEPROM.put(0, flash); EEPROM.commit(); } void loop() { // put your main code here, to run repeatedly: }