Profi MC4000 - EVO12 Trainer Stick problems
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Profi MC4000 - EVO12 Trainer Stick problems
Does anyone have an answer to this problem, or even know if there is an answer?
My setup is as follows;
Teacher: Profi MC4000 with HFM3+HW Mod, firmware v2.0, Telemetry Display
Pupil: Royal Evo 12 with HFM4, firmware v3.46
Wireless Trainer Stick
This setup is why I bought the trainer stick so I want to stay with it, ie. P4000 is the teacher.
After finding it almost impossible to stop the servos re-centering when switching control to the pupil, I spent a great deal of time discovering the problem. For sure, I can operate in "simple & stupid mode", but re-centering is tedious and the servo limits are no longer equal. I want to operate with the pupil TX (Evo12) in the MPLINK mode, which is as instructed by the Trainer Stick documentation.
It seems that the P4000 is expecting a pulse train with 1.6mS centres (MPX) and the Evo12 is sending 1.5mS centered pulses (UNI). Nothing I can do will alter this. When the Evo is sending to the Trainer Stick and MPLINK is turned ON the option to change the servo pulses to MPX is disabled, and all pulse outputs are locked to UNI.
If I use a buddybox cable connection then the option is re-enabled, and I can set all of the servo outputs to MPX. This configuration works perfectly and there is no servo re-centering when switching control to the pupil. Of course, the MPLINK option is no longer available.
So in summary, the problem only exists when MPLINK is set ON in the pupil transmitter and the Trainer Stick is being used in the teacher transmitter.
There appears to be no option in the P4000 to force it to expect UNI pulses.
This behaviour is contrary to the documentation supplied with the Trainer Stick. It appears to be a software bug. I could write to Multiplex and ask them about it, but based on the experiences of others I don't plan on holding my breath that long.
Preventing the Evo12 from disabling the ability to set the servos to MPX when in Pupil MLINK mode would fix the problem. Certainly the MLINK protocol can handle MPX because the MLINK TX module in the P4000 can happily handle it, so there is no reason to expect that the Trainer Stick can't as well. Just a simple software change. Why did Multiplex do it this way?
Another option would be a software change in the P4000 to allow it to expect UNI pulses from the pupil transmitter. The downside is that this firmware change cannot be done by the end user.
My setup is as follows;
Teacher: Profi MC4000 with HFM3+HW Mod, firmware v2.0, Telemetry Display
Pupil: Royal Evo 12 with HFM4, firmware v3.46
Wireless Trainer Stick
This setup is why I bought the trainer stick so I want to stay with it, ie. P4000 is the teacher.
After finding it almost impossible to stop the servos re-centering when switching control to the pupil, I spent a great deal of time discovering the problem. For sure, I can operate in "simple & stupid mode", but re-centering is tedious and the servo limits are no longer equal. I want to operate with the pupil TX (Evo12) in the MPLINK mode, which is as instructed by the Trainer Stick documentation.
It seems that the P4000 is expecting a pulse train with 1.6mS centres (MPX) and the Evo12 is sending 1.5mS centered pulses (UNI). Nothing I can do will alter this. When the Evo is sending to the Trainer Stick and MPLINK is turned ON the option to change the servo pulses to MPX is disabled, and all pulse outputs are locked to UNI.
If I use a buddybox cable connection then the option is re-enabled, and I can set all of the servo outputs to MPX. This configuration works perfectly and there is no servo re-centering when switching control to the pupil. Of course, the MPLINK option is no longer available.
So in summary, the problem only exists when MPLINK is set ON in the pupil transmitter and the Trainer Stick is being used in the teacher transmitter.
There appears to be no option in the P4000 to force it to expect UNI pulses.
This behaviour is contrary to the documentation supplied with the Trainer Stick. It appears to be a software bug. I could write to Multiplex and ask them about it, but based on the experiences of others I don't plan on holding my breath that long.
Preventing the Evo12 from disabling the ability to set the servos to MPX when in Pupil MLINK mode would fix the problem. Certainly the MLINK protocol can handle MPX because the MLINK TX module in the P4000 can happily handle it, so there is no reason to expect that the Trainer Stick can't as well. Just a simple software change. Why did Multiplex do it this way?
Another option would be a software change in the P4000 to allow it to expect UNI pulses from the pupil transmitter. The downside is that this firmware change cannot be done by the end user.
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ev2driver (01-17-2024)