Trouble uploading Skynet3D to my Anet A8 via Arduino program
Skynet3D was a very old fork from Marlin firmware, all functionality (more specifically for the odd LCD screens used by Anet) have been merged into Marlin firmware. Just get the latest version of Marlin. The current and final release of branch 1.1.x is 1.1.9 further development will be done in 2.0.x. Version 1.1.9 works perfectly fine for the Anet A8.



These error messages are displayed when you have either selected the wrong COM port or wrong Arduino board or have faulty or no drivers installed.