I have lately been flashing a bunch of Arduino micro-controllers with GRBL and I had a small issue where an older version of GRBL’s settings were stuck in the Arduino’s EEPROM.
To get around this I used a quick script from the Arduino website to clear it. I thought it would be useful for people who want to clear GRBL’s setting or make it reset to its defaults.
// write a 0 to all 512 bytes of the EEPROM
for (int i = 0; i < 512; i++)
// turn the LED on when we’re done