Marlin 3D Printer Firmware Copyright (c) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
Based on Sprinter and grbl. Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/. Melzi (Creality) pin assignments
The Creality board needs a bootloader installed before Marlin can be uploaded. If you don't have a chip programmer you can use a spare Arduino plus a few electronic components to write the bootloader.
See http://www.instructables.com/id/Burn-Arduino-Bootloader-with-Arduino-MEGA/
1.8.16