I'm trying to get the my WidowX arm to playback sequences in a standalone mode (using a arbotiX-m controller).
http://learn.trossenrobotics.com/36-...-playback.html ==> this is what I'm learning from.

When compiling the code in arduino ide it tells me that there a fatal error: avr/io.h is missing. I can't seem to find the file or where it should be.

Has anyone used this little program or could someone point me in the right direction?

Thanks in advance!