Originally Posted by
Roelof
I was searching where the Savox was mentioned but I had some contact with Savox in the past and they have no servo's supporting these faster response signals. The 1257TG just use the normal 1-2 msec signal and will not react to Futaba its 760 usec and Sanwa its 300 usec pulse. And no way you can make that work unless you hack the servo its firmware (beside the question if the processor is fast enough to work on those higher speeds)
Of course you can provide a signal of 0.5 to 1 msec because most normal servos can handel a pulse in the range of 0.5 up to 2.5 msec but your servo will have a limited move as well if you try to limit it to 1 msec.
I'm not saying I want my savox to react to higher frequency PWM signals - just that I think the car feels better when there's a faster packet rate between the radio and tx. Minor distinction. And also, if I want to upgrade to a servo with a faster PWM frequency, I won't be able to take advantage of it's improved performance with this radio due to the packet rate limits imposed by trying to transmit more channel's worth of data than I need for a car.
But as far as I can tell ELRS doesn't sync packet rate to PWM frequency. So a packet that shows up just after a PWM period begins will result in a slightly higher overall latency than if the packet rate was faster than the PWM frequency. Even in the case where a packet arrives just after the start of a PWM period, if more packets show up before the start of the next PWM period there will be less time delta between the most recent command I put into the radio and when the radio starts doing that thing.