Otto robot V2 with modified Zowi firmware

I modified previous version of Otto and added RGB led, lipo charger and battery and MAX7219 dot matrix display.

My modified sketch and libraries:
https://github.com/dlevstek/Otto
Links to design files and sketches:

Original Otto project from which i got the idea, design and help making it: http://otto.strikingly.com/ and https://github.com/OttoDIY/OttoDIY

For MAX7219 code: http://www.thingiverse.com/thing:1916804

And original Zowi sketch which modified: https://github.com/bq/zowi/tree/master/Zowi_mold/scr/code

Видео Otto robot V2 with modified Zowi firmware канала Davor Levstek