Timings
SERIAL PORT SPEED – Changes the baud rate used for serial communication. Decrease it
when using over-the-air serial adapters that do not work at maximum speed. The software
can auto-detect the baud rate configured in the board.
PWM FREQUENCY – Sets the PWM frequency used to drive the motors in the POWER
stage. Two modes are available: Low Frequency (within audible range) and High
Frequency (outside audible range). In the high-frequency mode, it is necessary to increase
the POWER setting slightly.
Motor Outputs
You can assign hardware motor outputs for any of the stabilization axes. For example, you
can use a second controller for YAW stabilization and set it up with the following settings:
ROLL=disabled, PITCH=disabled, YAW=ROLL_OUT. Then connect a YAW motor to
hardware ROLL_OUT.
RC Sub-Trim
RC Sub-Trim allows correction of transmitter inaccuracy.
ROLL, PITCH, YAW trim – Enables trimming of the center point. The central point is PWM
1500. It is better to trim the center point with the transmitter, but if it is not possible to
do so (when using a joystick, for example), you can use the AUTO function in the
software. Place the stick in the center and press the AUTO button. Actual data becomes
the new center point. Press the WRITE button to apply these settings.
Dead band – Adjusts a dead band around the neutral point. With this setting, there is no
control while the RC transmitter signal is inside the dead band range. This feature works
only in SPEED mode and helps to achieve better control by eliminating jitter around the
stick neutral point.
Expo curve – Adjusts the curvature of an exponential function allowing precise control from
a RC transmitter for small stick movements but more aggressive control near the stick
endpoints. This option works only in SPEED mode.
SENSOR
Gyro LPF – Adjusts gyro data filtering. It is not recommended to set values other than 0,
because it will make adjusting the PID controller harder, but you can experiment with this
option if you desire.
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