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RH1N0 · 02-11-2008, 05:34 AM

Hi Vasilis,

When you stir both sticks you are changing the values of 4 channels at once and this can have the effect of expanding and contracting the frame of the servo signals (on some RC equipment more then others). It's likely that the frame rate is expanding or contracting slightly beyond the programmed limits of the kill switch and this is what causes the switch to turn off until you release the sticks and the signal stabilises once again.

I only know this as I recently designed a kill switch and this was one of the early issues I discovered and had to overcome in software. It's obviously hard to test a product with every combination of equipment in use around the world and there is some variation in what constitutes a standard servo signal.

So my guess is that your RC gear is incompatible with this particular switch.

Not a good outcome although it's probably good that you have noticed it now instead of having problems with dead sticks or what may seem like PCM hits in flight. You should definately report this to the kill switch manufacturer as they may be able to help and should at leat appreciate the feedback.

Cheers
Jeremy

02-11-2008, 05:34 AM	#6
RH1N0 My wife said NO Join Date: Jan 2006 Location: BrisVegas, Australia Age: 37 Posts: 1,312	Re: SM Engine Kill Switch Hi Vasilis, When you stir both sticks you are changing the values of 4 channels at once and this can have the effect of expanding and contracting the frame of the servo signals (on some RC equipment more then others). It's likely that the frame rate is expanding or contracting slightly beyond the programmed limits of the kill switch and this is what causes the switch to turn off until you release the sticks and the signal stabilises once again. I only know this as I recently designed a kill switch and this was one of the early issues I discovered and had to overcome in software. It's obviously hard to test a product with every combination of equipment in use around the world and there is some variation in what constitutes a standard servo signal. So my guess is that your RC gear is incompatible with this particular switch. Not a good outcome although it's probably good that you have noticed it now instead of having problems with dead sticks or what may seem like PCM hits in flight. You should definately report this to the kill switch manufacturer as they may be able to help and should at leat appreciate the feedback. Cheers Jeremy Last edited by RH1N0; 02-11-2008 at 05:50 AM.