A: 1) Make sure the biding is done and the signal output of receiver is SBUS or PPM. Please refer to the user manual for the detailed steps.

2) Level the aircraft on the ground and power it on and the transmitter. The aircraft will do auto checking, which takes about 1 minute. When it's done with success, a music tone from ESC will be heard. Then try operating the transmitter to see if servos move.

A: There are totally 5 modes: Vertical, Vertical Mode/Stabilize Mode/Acrobat Mode/Gyro Mode/Manual Mode. They are with gyro assistance except the Manual Mode. The default channels to change flight modes are CH5 and CH7 of transmitter.

A: 1) Check if Byme-A is well fixed.

   2) Check if the flight mode is non-manual one. Because when at Vertical Mode/Stabilize Mode/Acrobat Mode/Gyro Mode, gyro assists to stabilize. If the aircraft is not well leveled, ailerons/servos will automatically adjust certain angles to balance.

  3) Make sure the Byme-A head(arrow) points to the aircraft head. Byme-A should be fixed horizontally on the fuselage instead of vertically.

  4) Recalibrate the aircraft: Level the aircraft and switch the flight mode as Manual. Pull both joysticks of the transmitter to outside corners for 3-5s until the green indicator on Byme-A flashes once.

A: Make sure the throttle phase of the transmitter is set as reverse.

A: As gyro doesn't function at Manual Mode, all channels/servos work correctly to the transmitter joysticks means the transmitter functions well. But if they are reversed when other flight modes are changed to, phases on flight controller also need to be set, following below steps

Note Make sure attitude calibration is done before servo phase calibration. Because flight controller will auto identify NOR/REV and modify gyro direction when doing attitude calibration.

Neither the always-on nor off green led means reversed phase. Only toggling joysticks can check if the corresponding servo phases are reversed.

A: Before calibrating the phases of flight controller, please make sure the flight controller at Acrobat Mode, Vertical Mode, Gyro Mode or Stabilize Mode. Flight controller will cannot into calibrate mode if at Manual Mode.

It is advised to lift the model head with a certain angle(23 degree is advised) to ensure the calibration accuracy and it will be recorded once the attitude calibration is complete with success.

A: Please check the surface aligned or not at Manual Mode because there's gyro assisting in other flight modes and it will modify the aircraft angle to increase balance. Therefore, deviation is normal.

A: It's because of the calibration angle. Please calibrate the aircraft with a certain angle (20° to 23° is advised), which is easier to keep flight altitude with Angle/Stabilize Mode. Attitude calibration only needs to be done once and Byme-A will record.

In order to calibrate, please pull both joysticks of the transmitter to outside corners for at least 3 seconds. When the green indicator on Byme-A flashes once means calibration is done.

A: Connect the flight controller to the receiver. Push the joystick of the transmitter and view the servo display in the transmitter at the same time. If there is a mix control of channel 1 and channel 2, the flight controller is Byme-D. If there is no mix control of channel 1 and channel 2, the flight controller is Byme-A.

A: Byme-A support both PPM and SBUS signal input, so please check if your receiver supports PPM or SBUS signal output. If the receiver does not support PPM or SBUS signal, you need to purchase an additional converter to PPM or SBUS signal.

A: If the ESC does not have a BEC, an external BEC module is required to reduce the voltage to 5V. Because the input voltage of some receivers cannot be higher than 5V, and the input voltage of Byme-A cannot be higher than 6V.

A: The wrong installation direction and position of Byme-A will lead to inaccurate correction of the flight controller, and the flight effect will be affected.

A: For Byme-A, channel 5 (asked set up a three-way switch to switch the flight mode) and channel 7 (asked set up a two-way switch to switch the flight mode) are used to switch among five flight modes. If the transmitter has only 4/5/6 channels without 7 channels, only 3 flight modes can be selected. The three flight modes are random.

A: You cannot set any mixing function in the transmitter when Byme-A is mounted on the aircraft. Because there is already the mixing function in Byme-A.  The mix control will automatically take effects according to the flight mode of the aircraft. If the mixing function is set in the transmitter, there will be conflicts such as the situation that only one aileron swings when you move the joystick.

A: Push the throttle stick to see if there is output of throttle channel. If there is output of throttle channel when you push the stick, you do not need to calibrate the ESC. If there is no output, you need to calibrate the ESC. For the specific calibration method, please refer to the instruction manual of the ESC.

A: Turn the aircraft around by hand. (Do not operate the transmitter at this time.) No movement of the control surface means it is manual mode now.

A: First, make sure to set the direction of the channel as below:

Throttle channel-- Reversed, other channels -- Normal.

If you set the direction of the channel as above, but the attitude calibration cannot be finished by pushing the left stick (left and down) and the right stick (right and down), please enter the menu of the transmitter to set the direction of the channel. The direction of the throttle channel still remains reversed. But for other channels, please try the following 3 combinations to set the channel direction and then calibrate the attitude by pushing the left stick (left and down) and the right stick (right and down):

Combination 1: Channel 1- Normal, Channel 2- Reversed

Combination 2: Channel 1- Reversed, Channel 2- Normal

Combination 3: Channel 1- Reversed, Channel 2- Reversed

When the attitude calibration can be done by pushing the left stick (left and down) and the right stick (right and down) with any one of the above combinations of the channel direction, save it and do not make any modifications. After the attitude calibration is finished, please check the servo direction next.

A: No. Just follow the manual of Byme-A to set up the transmitter, perform attitude calibration, and check the phase. Here is the detailed manual of Byme-A: https://www.radiolink.com/bymea_manual

A: Byme-A supports standard SBUS and PPM signals. W.BUS signal of the WFLY receiver is different from the standard SBUS signal, so some models of WFLY receivers cannot work with Byme-A via the W.BUS signal. But the PPM signal of the WFLY receiver is a standard PPM signal, so if the W.BUS signal of the WFLY receiver is not recognized after being connected to Byme-A, you can switch the signal of the receiver to PPM and connect it to Byme-A. Then they can work together.

A: Byme-A supports standard SBUS and PPM signals. W.BUS signal of the WFLY receiver is different from the standard SBUS signal, so some models of WFLY receivers cannot work with Byme-A via W.BUS.

A: NO.