At the very end of my latest entry you'll find links to instructions
Building the 3DR “Simple” Delta Printer, Part III [trains.socha.com]
And yes, you have to follow the same steps as it seems the Printrboard doesn't have a bootloader that would allow you to download the firmware directly from the Arduino IDE.
Building the 3DR “Simple” Delta Printer, Part III [trains.socha.com]
And yes, you have to follow the same steps as it seems the Printrboard doesn't have a bootloader that would allow you to download the firmware directly from the Arduino IDE.