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PPM Tx Input info?

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I'm playing around with a head tracker - has any seen any info on the input into the Futaba Transmitters?

I'm up with the whoel PPM format thang, but how do you input a value for 2 channels but leave the others alone?

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You need to send 8 channels in any case, otherwise it will consider the signal as invalid. Then, use the transmitter's trainer menu to assign only the 2 channels you want to the trainer port. Not all models have that function (7C and above on the current line, 9Z and 8U in the older).

For the "not compatible" ones that don't have that function, the trick you can do is read the PPM output that is on the trainer port with your controller, modify the 2 channels you want and send it back into the input. Note that induces a 1-frame latency.

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