... -flight control purposes)BICOPTER ------ 2-axis aircraft AvatarTricopter ----- Y3 (Y-type 3-axis)QUADP --------- 4-axis + classic modeQUADX --------- 4-axis × modeY4 ------------ Y-type four-axisY6 ... , Bluetooth module, the data transmission module, GPS module, satellite receiver, 3-axis head and other devices. With Chris MWC LCD module, outside ...