EEPROM overwite previous data?

Thanks Rob

What must I change ( apart from the Serial ) to get the main part working with the normal usb?

Just remove the HEX from all the Serialprints ?

I get ÿ?ñn¢³30 ¿<ðn¢³30 ¿>ðo£322¡ÿ>ñn£°23aß?ño£°23áÿ?ñ at the moment on the monitor