Low battery warning
The green LED on the back will start to flash/turn off momentarily when the battery voltage is under 3.5V.
This is a good time to land and recharge/change battery.
Accelerometer and gyro calibration
Before the first flight, the FC needs to know the absolute flat and level position relative to the earth’s surface.
Calibrating the accelerometer and gyro is easily done using a bubble/spirit level on a flat surface.
Calibrate in BetaFlight:
1. Open BetaFlight and hit “Connect”
2. Put a spirit level on a surface and make it level, place the XRACER on the level surface
3. In the first tab, click “Calibrate Accelerometer”
Using radio sticks:
1. Power up the radio and XRACER, remaining disarmed for the duration of this process
2. Put a spirit level on a surface and make it level, place the XRACER on the level surface
3. For the accelerometer, move the
throttle stick up-left
and
pitch down-center
, you will see the
green LED blink for confirmation
4. Now for the gyro, move the
throttle stick down-left
and the
pick down-center
For reference, see this list for all the CleanFlight stick operations (credit CleanFlight repository):
Flight modes
The XRACER now has 3 flight modes to accommodate most flying styles.
●
Acro
: full manual mode, simple but allows full acrobatics, for experienced pilots/racing
●
Horizon
(recommended): This mode is very flexible, there is no angle limit, you can do roll and
barrels but if you let go of the sticks (hands off the radio), the X-Racer will stabilize automatically
●
Angle
: Easy mode, similar to DJI Attitude auto correction mode, the roll and pitch axis are limited to
45 angle
°
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