If you have this (or a similar) transmitter and you tried to use it for FMS (or any other simulator) you probably found out that it is impractical.
At the request of Mr Juan José Rubio MarÃn of Spain, and with his extraordinary help, I am now trying to figure out how to solve this problem.
The solution will be implemented for , so those of you who have such a Tx please do not buy the E-Sky USB connector. I tried the EI400B USB Softdog. It does not work.
The problem: This Tx works in CCPM mode only. While in the basic Tx every stick movement (Rudder, Ailerons, Throttle & elevator) is mapped into a single transmission channel (hence the basic 4ch Tx), CCPM mode Tx a single channel does not correspond to single stick movement but rather every stick movement corresponds to a mixture of channels.
The solution: We now need to un-mix the signals. FMS cannot do this. I will implement the un-mixer in SmartPropoPlus. To do this Juan José and me are deciphering the E-Sky CCPM algorithm. Those of you who have already dome it are welcome to correct me.
Algorithm:
Throttle stick - going up from 0% to 100%:
Main channel: Ch3 (Reverse)
Minor channel: Ch1 (Reverse)
Minor channel: Ch2 (Normal)
Note 1: Ch1 = Ch2 when Throttle=0%
Note 2: ∆Ch1=-∆Ch2
Rudder stick - going left to right:
Main channel: Ch4 (Reverse)
Elevator stick - going up from 0% to 100%:
Main channel: Ch2 (Reverse)
Minor channel: Ch1 (Reverse)
Minor channel: Ch6 (Normal)
Note 1: Ch1 = Ch6 when elevator=50%
Note 2: ∆Ch1=-∆Ch6
Aileron stick - going left to right:
Main channels: Ch1(Normal) = Ch6(Normal)
What I now am trying to figure out is the Ch3 to Ch2 function. It seems to be something like:
CH2=a*(1+4/CH3)
where a is the channel mid point.
I will appreciate any comment!
Shaul