sorry if I'm misunderstanding but David Peace has a board that will operate servos and linear servos as pixels you just program them in xlights like you would a normal pixel is that not the same ? I know linear servos may be more expensive than actuators but not much more, from memory it will...
the cze-05b has a little instruction leaflet , I had the same issue , the fix was to turn the volume down out of the pi and use the volume on the transmitter to adjust , I think if you have the volume too high on the pi/pc it overdrives the transmitter
checked the link also "
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