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Old Dec 22, 2012, 10:26 PM
Registered User
Joined Dec 2006
213 Posts
Help!
Sharing left stick on DX7 for pan/tilt fpv camera

Hi Everybody,
I am using dx7 for my fpv plane with nova osd, so I have to use at least 5 channels for the most important things to control my plane. So there are only 2 free channels: gear and aux2. I would like to use them for my pan/tilt camera.

My target is using the MIX switch to turn on the mixes in order to sharing the left stick to control pan/tilt camera while the rudder and throttle channels to be temporary set at a desire value to keep the plane going.

It means:
- When MIX switch is OFF:
+Left stick will be used to control rudder and throttle as normal.
+Gear switch and Aux2 will be use for nothing or controling 2 position of pan/tilt (If it can be used like that)
+Gear and Aux2 channels will be set at a desire values to keep the camera to look a head.

- When MIX switch is ON:
+Left stick will be used to control gear and aux2 channels for Pan/Tilt.
+Rudder channel will be set at center and will not be controled by left stick.
+Throttle channel will be set at cruising (about 60%) level and will not be controled by left stick.
+Gear and aux2 switch will be disabled.

When trying to make that mixes, I have got a problem. I couldn't use mix switch for more than 2 mixes.

First, I would like to set the mixes for rudder and gear channels:

MIX #1: (mix rudder channel to gear channel)
RUDD -> GEAR
Rate:
+100
+100
SW: MIX
OFFSET:0

MIX #2: (stop control rudder channel from left stick)
RUDD -> RUDD
Rate:
-100
-100
SW: MIX
OFFSET:0

MIX #3: (disable gear switch)
GEAR -> GEAR
Rate:
-100
-100
SW: ON
OFFSET:0

After those 3 mixes, the MIX switch will not be available to set up for the next mix.
I have tried a lot but still don't know how to solve that problem.

Please help me, I will appreciate all of your helps.
Thanks.
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Last edited by tuongnhu; Dec 23, 2012 at 03:07 AM.
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Old Jan 03, 2013, 12:29 PM
Registered User
Joined Dec 2006
213 Posts
Hi everybody,
Today, after spending few hours playing with my DX7, I finally found some simple rules and had completed my setup as well.
The important rule is that the mix switch can only be selected on mix1, mix2, mix5 and mix6. It will be not available on mix3 and mix4. That's all.

Here is my final setup. It works as expected.

MIX1:
rudder->gear (mix rudder stick to gear channel for PAN when mix switch is on)
rate:
+100%
+100%
sw: mix
offset: 0

MIX2:
rudder->rudder (isolate rudder channel from rudder stick when mix switch is on)
rate:
-100%
-100%
sw: mix
offset: 0 (fixed at center when mix switch is on)

MIX3:
gear->gear (disable gear switch)
rate:
-100%
-100%
sw: on
offset: 0

MIX4:
aux2->aux2 (disable aux2 switch)
rate:
-100%
-100%
sw: on
offset: 0

MIX5:
thro->aux2 (mix throttle stick to aux2 channel for TILT when mix switch is on)
rate:
+100%
+100%
sw: mix
offset: 0

MIX6:
thro->thro (isolate throttle channel from throttle stick when mix switch is on)
rate:
-100%
-100%
sw: mix
offset: 0 (fixed at 50% - center - throttle when mix switch is on)

For safety: Do not turn on the MIX switch with motor and props ON and the plane still on the ground, the motor will run at 50% throttle immediately.
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Last edited by tuongnhu; Jan 03, 2013 at 12:35 PM.
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