go to ottodiy.com in the build it! section
download and unzip OTTO_DIY_all.zip
from the “driver” folder install CH341SER
copy or move all “libraries” folders to:
C:\Documents\Arduino\libraries\
(or wherever your Arduino library folder is)
copy or move all “OTTO_” folders to:
C:\Documents\Arduino\
(or wherever your Arduino sketch folder is)
a
b
c
d
choose the appropriate Operating System
installation package for your computer.