User Manual

The Side parameter limits the effect of that formatting line to only one side of the stick. A summary of the
selected modes for each line is shown on the main screen.
Mixer
The next page is where the actions on the controls will be mapped to servos. OpenTX does not have any
predefined mixing functions that relate only to a particular model type or situation, it rather gives you a blank
canvas you can build upon. The key to configuring a model on OpenTX is not to think about "activating the delta
mix" like on certain radios, but rather to think about what you want your control on the model to do in response
to an input on the radio's controls. The mixer is where all that "logic" gets entered.
The various channels are outputs, for example CH1 being the servo plug #1 on your receiver (with the default
protocol settings). A channel without a mixer line will just center a servo that would be connected to it.
Each mixer line connects one input to the channel it's on. Inputs can be:
● The 4 stick axes
● The 4 pots and sliders
● The heli mixer outputs (CYC1-3)
● A fixed value (MAX)
● The 8 physical switches
● The 32 custom (logical) switches
● The trainer port input channels (PPM1-8)
● Each of the radio's 32 channels, which allows using channels as a virtual functions for clarity (mix
several inputs into one reuseable function, that can then be assigned to one or more channels). Note
that the settings of the SERVOS page are NOT taken into account there.
All inputs work on a -100% to +100% basis. Sticks, pots, channels, CYC sources, trainer inputs will vary
proportionally within this range. 3-position switches will return -100%, 0% or +100%. 2-position switches (and
logic ones) will return -100% or +100%. MAX is always +100%.
If you want the servo connected to the #2 plug of your receiver to be controlled by the elevator stick, you will
simply create a mixer entry on CH2 with Ele as source. Easy enough!
There can be as many lines as needed on each channel, and the operation between each line can be selected.
To create a new line, you would LONG press the ENTER key, and select insert before/after. By default all the
lines on a same channel are added together, but a line can also multiply those before it, or replace them.
For clarity, each line that is currently active and contributing to the channel's output will have its source
displayed in bold. This can be very handy when many are present and to check switch functions.
For each mixer line, several parameters are available:
● A name can be entered for convenience
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