Get tutorials Aircraft Model SF250

About the Radio Transmitter

Since a radio transmitter will be used in software debugging, let’s first learn something about it now. For more details, please refer to the transmitter’s user manual.

Talking of radio transmitter control, here a term is involved: "channel", meaning how many types of movement the copter can make by the radio transmitter control. For example, up and down can be counted one channel. If the radio transmitter control can only control the copter to fly up and down, it's called one channel.

For a quadcopter, at least four channels are needed, namely, up-down, right-left, forward-backward, and clockwise-counterclockwise rotation. The corresponding channels are throttle (up-down), roll (right-left), pitch (front-back) and yaw (clockwise-counterclockwise rotation). If you want more functions, more channels are required.

Before applying the radio transmitter, you need to know there are two different types of radio transmitter. They are different in the position of throttle – left (what we provided in this kit) and right. The throttle controls the motor speed. The higher you push it, the motor rotates faster, and the quadcopter flies higher, and vice versa. It is quite easy to tell the throttle. Try to pull the two rocker arms. The one that will not restore to the middle is the throttle rocker.


The four rocker channels are Throttle, Rudder, Elevator, and Aileron, which are Throttle, Yaw, Pitch, and Roll respectively in the software. The mapping relationship is as shown below:









Next, let’s move on to software debugging.

Previous chapter: 2 Connect the receiver

Next chapter: Installing the Ground Control Station (GCS)

Oct 10 2017 at 03:34 am

© Developed by CommerceLab