SkyrimDragon wrote:Now I have confused myself.
I have a FrSky receiver. I believe that has a PWM output for RSSI. So I cannot use the analog input A3? Is there an answer for Carlo on whether MISO actually works? I have a board set up to test it, but Icannot for another few days and wwould rather know for sure before soldering pins and such.
You can use A3 input to read an analogic input or a PWM input.
If you are reading a pure PWM signal (not filtered with an RC nor a resistor devider as per analogic reading) you use A3 pin and modify the Config.h file of OSD sketch as follow:
ORIGINAL
/******************** PWM RSSI *********************/
#define PwmRssiPin 12 // Miso Pin
MOD
/******************** PWM RSSI *********************/
#define PwmRssiPin A3 // A3 analog Pin
after that, in GUI enable PWM reading and disable the ADC reading
Please try as I've not a PWM RX and let me know any news
Cheers