Bonus Content
By default OpenTX prevents assigning Output travel values outside the range
of -100 to 100. However, most servos are capable of responding to signals outside this range to
provide an extended range of motion. If you require increased extension from a servo you can
over-ride the default limits on the Model
SETUP
screen:
You may now enter ‘
Min
’ and ‘
Max
’ values on the
OUTPUTS
screen over an extended range
from
-150
to
150
. Most servos will not go all the way to 150% of normal range, so use caution in
exploring motion limits. And no, extended range will not make your drive motors faster – don’t
even try.
Channel Reversing
We setup the single-stick drive mix on the
MIXER
screen to provide the correct signals to the
drive motor controllers, but we may need to reverse the direction of the signal provided at one or
both of the receiver ports that command the motor controllers to compensate for motor polarity.
Similarly, the action of a servo powered lifter or the response of a channel assigned to a toggle
switch may also require adjustment in the signal direction at the receiver port.
In a conventional transmitter there would be a menu to deal with ‘Servo Reversing’ to sort out
these issues. In OpenTX the same function is folded into the
Outputs
screen.
We can reverse the direction of operation of mixed or unmixed outputs on the
OUTPUTS
screen by ‘inverting’ a specific channel. In this example we invert the
output of
CH2
:
Use the scroll wheel to highlight the
CH
line, then tap the
ENTER
button to
bring up an action menu.
Tap
ENTER
to enter the
EDIT
screen.
Scroll down to the
Direction
line, then tap
ENTER
to change the mode to
INV
.
Tap
EXIT
twice.
Page upward from the
OUTPUTS
screen multiple times to find the
SETUP
screen.
An option box here will allow will enable entry of extended allows direct limiting of the
motion range commanded on each side of the motion center point. On the
SETUP
screen:
Scroll down – it’s pretty far - to the
E.Limits
line.
Tap
ENTER
to check the
E.Limits
box.
Tap
EXIT
.