MultiWii

Hello,
I'm trying to set up my new Turnigy Evolution transmietter and TGY-iA6C receiver on my MultiWii SE V2.5.
so far I've controlled the FC using a python script that inject RC channel via MSP.
I read here https://hobbycomponents.com/rc/489-crius-se-25-multiwii-flight-controller that it supports PPM and here http://www.electronoobs.com/eng_robotica_tut5_3.php how to set it up.
so I checked the channels on the transmitter and they are:
ch1 yaw
ch2 pitch
ch3 throttle
ch4 roll
then I uncommented these line in the code of the MultiWii firmware acccording to the channels order:
#define SERIAL_SUM_PPM YAW,PITCH,THROTTLE,ROLL,AUX1,AUX2,AUX3,AUX4,8,9,10,11
#define PPM_ON_THROTTLE
then I uploaded it to the FC, I calibrated accelerometer and magnetometer, and I leave the default configuration to arm/disarm the motors.
the transmitter output mode is on PPM and I wired receiver's PPM pin to the FC's D2 pin, and obviously + and -.
but when I power on if I put the stick on yaw 2000 and throttle 1000 the motors don't arm, but the blu led keeps blinking as long as I hold the stick in that position.
what am I doing wrong?
Thanks

The Board need to be level to ARM.
#define ONLYARMWHENFLAT //prevent the copter from arming when the copter is tilted

You can test to Arm with a AUX switch.

PatrikE wrote:The Board need to be level to ARM.
#define ONLYARMWHENFLAT //prevent the copter from arming when the copter is tilted

You can test to Arm with a AUX switch.

I always was able to arm the motors using MSP before, I calibrated the accelerometer and the quad is flat on the floor.
I also tried to set on the transmitter the ch5 (aux1) to a 2 positions switch and then in MultiWiiConf I set arm on the high value of aux1 (that would even be safer) but it doesn't work.

Inside void go_arm()

That means you can't ARM if Baro is enabled at same time.

Your image shows you have Baro enabled on same switch as ARM.

Ok I'll try unchecking the BARO box this evening, but why with the switch on low position I could't arm using the sticks? if I check arm on aux arming by sticks is disabled? I already tried without checking anything in arm

I tried but when I put the ch5 (aux1) switch on high level nothing happens...
the only thing I noticed is that while keeping the throttle stick on bottom right position, the blue LED on FC start blinkinhg very fast (it seems almost solid) then it pause , then it blinks again and so on, what does this mean? I didn't find it in the wiki

Hi,

It's strange that MAG is enabled without any box checked!.


Is all channels within correct range(1000-2000)
Otherwise failsafe can be activated.

Also if you upgraded the software on the FC you should start with a Eeprom erase or at least reset from Gui.
Some old settings can interfere at a upgrade.

Then test to ARM without changing anything.