EEPROM Settings

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Values are stored in EEPROM and will be maintained upon power down of Arduino. But EEPROM works only if enabled in Marlin?


  • M500 Store current settings in EEPROM for the next startup or M501.
  • M501 Read all parameters from EEPROM. (Or, undo changes.)
  • M502 Reset current settings to defaults, as set in Configurations.h. (Follow with M500 to reset the EEPROM too.)
  • M503 Print the current settings – Not the settings stored in EEPROM.