I carefully followed the "Getting started with Arduino IDE" (IDE version is 1.8.1.), but it didn't work.
The Blend boards do not appears in the board menu...
And If i choose the "Boards Manager" menu item I got a long series of error messages:
"Invalid library found in C:\Users\massi\Documents\Arduino\libraries\hardware: C:\Users\massi\Documents\Arduino\libraries\hardware"
I can't work with the board.
p.s. I also tried to copy the blend folder into Arduino / hardware /arduino installation folder. In this case, when I launche the IDE it crashes and exit.
I tried also with CodeBender, as you recommend.
Are you joking?
It's closing down!!!!:
Anyway, I found a solution digging in the net:
Go the Arduino preferences and add the line
To the additional;boards manager URL.
Then go to Boards Manager and add
RedBear AVR Boards and nrf 512822.
These are the info you should put in the Getting started.