This is the programmable controller board that drives the three-bearing swivel module (3BSM). Unless you need a replacement individually, it's reccomended to purchase the Electronics Pack to receive a combo discount.

Features
Accepts standard PWM R/C input for transition and yaw
Performs the necessary math and trigonometry
Drives the servos to the correct positions to achieve the desired thrust angles
Is easy to set up using the 3BSM Config App
 
Print files for the 3BSM are available separately. Click Here for details
 
Further, Click Here to download the 3BSM Config App