Jitter

[ardianet]

Hi, any updates for the jitter problem?

:)

[wdcossey]

@ardianet

Seems I forgot to implement that and then forgot that I added a comment to implement it 😄

I'll see what I can do for you in the next couple of days.

[ardianet]

@ardianet

Seems I forgot to implement that and then forgot that I added a comment to implement it

I'll see what I can do for you in the next couple of days.

lol.. can't wait for the update. :)

[wdcossey]

lol, I need to dig out my controller to test if it's going to work, this is purely a guess but you can try it.

https://github.com/wdcossey/ppm-to-ibus-serial/blob/master/ppm-to-ibus-serial.ino

Replace the lines (160-166) in the file with the ones below.

uint16_t next_width = ppm_pulse_data[ppm_pulse_index] - ppm_pulse_data[ppm_pulse_index - 1];
uint16_t prev_width = ppm_channel_data[ppm_pulse_index - 1];

//Fix the jitter
if (next_width > (prev_width + PPM_JITTER_THRESHOLD) || next_width < (prev_width - PPM_JITTER_THRESHOLD)) {
	next_width = ppm_channel_data[ppm_pulse_index - 1];
}

You can also tweak the PPM_JITTER_THRESHOLD value to try narrow down the jitter extremes.