I have a Pixracer with APM Copter V3.3.4-rc3. I connected 2 different types of "spektrum like" satellites (DSMX : R110XL, DRX Orange RX) on the RC Input port of my pixracer using the RC IN, VDD 3.3V and GND pins.
But on Mission Planner, in the radio calibration windows, there is no detection of any signal from my satellite (My satellites are binded with my DX9 Spektrum receiver).
I also tried with a R720X receiver using the CPPM output but again nothing detected on the radio calibration windows.
It is only when I use a R920X receiver using the S-BUS output (with the same pinout) that the radio calibration displays the signal from my transmitter.
On the pinout (https://pixhawk.org/modules/pixracer), the RC IN pin from RC Input should accepts all this signals : PPM / S.BUS / Spektrum / SUMD / ST24
So does it really work with DSMX and CPPM signal ?
I tried all my receivers (S-BUS, CPPM, DSMX) with my pixhawk and it works.
Thanks for your help