Lemon RX Stabilizer PLUS Receiver – Essential Instructions v.1.5
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Annex D: Using a Two-Position Switch to Control Stabilization
Many older transmitters, such as the DX6i have only a two-position switch (-100/100) for channel 5 (Gear).
One way to deal with this limitation is to set the Mode Order to allow one desired type of stabilization. In
the default Mode Order (OFF/Gyro/Autolevel), a two-position switch will select OFF or Autolevel. The
alternative order (OFF/Autolevel/Gyro) will allow the switch to select OFF or Gyro.
Another way is to reduce the switch travel (end point) on the -100% side to 0%. The switch will then deliver
100% (Autolevel mode) or 0% (Gyro mode). It is important to recognize that this provides no way to turn
stabilization OFF, unless the transmitter supports Master Gain on channel 8.
Annex E: Setting up a DX6i for the StabPLUS
The Spektrum DX6i is no longer available, but as one of the most popular transmitters of recent years there
are still vast numbers of them in use. The DX6i has two-position switches on channel 5 (Gear/F-Mode) and
channel 6 (Flap/Gyro), as well as on Mix, Ail D/R and Elev D/R. It has two programmable mixes.
In addition to the methods explained above, the DX6i's switch limitations can be worked around by using
the Gear switch and the Mix switch together to simulate a three-position switch. The following mix is used:
MIX 1
GEAR →GEAR ACT
RATE D 0% U –100%
SW MIX TRIM INH
Note that the Elevator D/R switch can be substituted for Mix.
If the GEAR channel is set to Reverse, this mix will produce -100%/0%/100% output, functioning as follows:
• Gear switch in Position 0: Gives Stabilization OFF (100%) for either position of the Mix switch.
• Gear switch in Position 1:
− Mix switch in Position 0 gives Autolevel mode (-100%).
− Mix switch in Position 1 gives Gyro mode (0%).
Since the StabPLUS is usually ON in flight, this allows easy switching between Gyro and Autolevel.
If the GEAR channel is left in Normal, the mix will have the following result:
• Gear switch in Position 0: Gives Autolevel (-100%) for either position of the Mix switch.
• Gear switch in Position 1:
− Mix switch in Position 0 gives OFF (100%).
− Mix switch in Position 1 gives Gyro mode (0%).
Thus Autolevel can be reached easily from OFF or Gyro, desirable if AL is used for Panic Recovery.
Which way you set it up is your choice.
Annex F: Using Channel 7 on the Lemon Stabilizer (v4 and v4.5) and StabPLUS
Current versions of the Lemon Stabilizer and StabPLUS allow channel 7 (Aux2) to be used as a normal servo
output, once the receiver has been bound.
Most servos work well when attached to channel 7, which also serves as the Bind slot. However, a few
servos, and many electric retract units, have sufficiently low input resistance (impedance) that they can be
seen by the receiver as a bind plug (a connection between the signal and ground pins). If this is the case,
then every time you power up the receiver it will go into bind mode.
There are a number of ways to overcome this problem:
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