Code based on optiLoader by Bill Westfield (WestfW), thanks Bill.
It works with the following chips: ATmega8, ATmega168, ATmega168P, ATmega168PB, ATmega328, ATmega328P, ATmega328PB
If you would like to support me, you can send me a tip or buy me a cup of coffee through PayPal if you like, thank you very much :-)
https://paypal.me/iHayri
https://www.tindie.com/stores/Phoenix...
https://www.thingiverse.com/Hayri/des...