tutelar-rc
Key Veteran
Location: Nobleton, Ontario - Canada
| To better understand the Programmable Mix, and what it is doing...
The Programmable Mix has 4 separate sections:
1. define the Tx stick function that controls the Rx servo function
2. the actual mix between a stick channel and a servo (slave) channel
3. the SWitch used to turn ON and OFF the mix
4. the OFFSET redefines the Neutral position of the servo (slave) channel
The important parts to this mix are:- the Rx servo function (RUDD)
- the SWitch used to turn ON and OFF the mix (HOLD)
- the OFFSET (-100 or -125) (-125 is actually the better program)
Looking at the program in detail:
This means that the Tx Rudder input will control the Rx Rudder servo output. The key part to this is the output (2nd) part. This could be controlled by the THRO or any other function, since you will not actually fly your heli with Throttle Hold turned on...
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RATE: +100% or +75%
0%
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Because we are using the RUDD channel to control itself, you can only program one rate.
Note If you are using one channel to control another channel, you can program a different rate in each direction - ie. you can change the 0% value.
This specifies which switch is used to turn ON and OFF the mix. In our case, we use the Throttle HOLD switch, as a carry over from Nitro helis...
Note: you can see the status of the switch while you are programming - top right of DX7 display
The offset, as noted by Micro Maniac, holds the left rudder for you ==> only while the SW:HOLD is ON.
Note: This will set the zero value of the tail ESC to whatever the combined mix and offset is when you power up the heli.
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My program,
mix=100 & offset=-100, and the rudder stick at neutral (0),
the actual Rx servo output will be 0 x100% -100 = -100.
Micro-Maniacs,
mix=75&offset=-125, and the rudder stick at neutral (0),
the actual Rx servo output will be 0 x75% -125 = -125.
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This will set your tail ESC at zero when your left stick is at either -100 or -125 of its travel ==> this is somewhat irrelevant, since your HH gyro is actually controlling the tail ESC in flight... it will only have a little effect on the responsiveness of the gyro.
The reason I like Micro-Maniacs offset better than mine, is that if you accidentally hit right rudder, the tail ESC will see:
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My program,
mix=100 & offset=-100, rudder stick at 100,
ESC sees 100 x100% -100 = 0
- tail motor is now moving at 1/2 throttle.
Micro-Maniacs,
mix=75&offset=-125, rudder stick at 100,
ESC sees 100 x75% -125 = -50
- tail motor is now moving at 1/4 throttle.
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Based on this explanation, there is a better program - I will test it and start a new topic... |
