Need help arming my motor's drone. Thanks for the help!

[projectdromt]

Hi everyone, i’m working on a drone project made with a multiwii controller (similar arduino board) an a raspberry pie. We have already built the drone and we set up the config.h file in the multiwii program as show (i’ll link our configuration and part list). We calibrated the ESC with the #ESCcannotfly command and then calibrated mag and acc through the GUI interface. Now the problem is that we can’t manage to arm the motors. We do not use a receiver because we want to control the drone through software and so we wrote a simple python script to send the values to the arduino. The problem is that even if the arduino receive the values motor won’t arm, we tested with tx and yaw arming with value ranging from 1150 to 1200 for the tx and 1150 to 1900 for the yaw. We are very stuck and we hope someone can help us, thank you in advance. Following i leave the part list and the config.h file.

Controller: MultiWii SE V2.0 regolatore di volo w / FTDI rosso
Battery: Multistar High Capacity 4000mAh 4S 12C Multi-Rotor Lipo Pack w/XT60
ESC: LHI 30a Brushless Speed Controller Esc Multicopter Kk Quadrotor
Motors:Dys Samguk WEI 2207 - FPV Motor - 2300KV-2600KV
Rotors: Dys BN5045 - Eliche Bullnose ad alte prestazioni - 2CW + 2CCW
Rapsberry Pi 3B+
*i’ve put only the important components, not the frame or other smaller not important things.

config.h file for evaluation
https://drive.google.com/open?id=1jGqwI17R1rChEX7GO2mKDc4uDRmv4ENi

Thank for your help!!!

[RCvertt]

Perhaps something in the failsafe part of the code is causing the issue?

[projectdromt]

Maybe il try chance something in the section do you ha e some specific suggestion?

[PatrikE]

Just a thoughts..

How do you send the values?
PPM or serial?
It have to be sent at ~50hz if you send via serial.

Throttle must be low to be able to ARM.