CC3D Openpilot FC vs Hobby King KK2.1.5 FC

Hi mate the big difference is the open source is what it says( its open source) ,you can plug it into a pc and write your own flight program for it ( if you know how) lots of guy use them to control loads of different things even robots, there is not one code written by one person , its lots of people adding and changing parts of the program to make it do what they need it to do
 
Hi mate Some FCB needs a receiver to work right , they some times make them work with major brands like spektrum and futaba
 
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