6.1.2 Configuring PWM Connection
Using the accessory port on the Duo and the included Bench Cable, camera functions can be
controlled directly from the sUAS flight controller via PWM signals (refer to the controller manual
for configuration instructions). Select the desired setting from the list of available PWM functions.
No two channels can be assigned to the same function. Any functions currently assigned to PWM
channels will not appear in the list of available functions for other channels.
To configure, select the “Settings” button on the Main page. Select the Accy. Port tab at the top of
the page. Ensure Serial Protocol is set to PWM. Select a PWM channel to configure (Figure 16).
Select the desired function. Select the number of states (Figure 17). The number of states will
depend on the type of switch that is being mapped on the flight controller. For a three-position
switch, the number of states will be three. Assign functions to the available states for each signal.
Next, program the flight controller to provide signals to the Aux Out ports for the PWM connectors
on the Bench Cable.
The Duo accepts standard PWM inputs for the R/C industry, 3.3-5vdc, 50Hz. LOW = 1ms/20ms,
MID = 1.5ms/20ms, HIGH = 2ms/20ms.
Figure 16. PWM Settings allow for control of Recording (start/stop and mode), IR Color Palette selection,
Recalibrate, and streaming Display Video Mode