Hello,
This is my 1st quadcopter that I am building. I 3D printed the T4 Quadcopter on thingiverse. I calibrated the ESC and the servos seems to be of the same rpm when I click Test in MP. I connect the 10 channels FS-i6X with the FS-iA10B through the i-BUS port to the RC-IN port. I did not use the PPM encoder. This allowed me to control all 10 channels and calibrated in MP without lag.
However, when I Armed and the props start spinning, as I increase throttle, the quadcopter starts tilting forward and broke a propeller… So I changed the Layout from X into V. This caused it to tilt sideway! The T4 quadcopter is not exactly X or V. It’s straight on the back 2 and V on the front 2.
(2), When I put it back into 0 throttle, the light on the Pixhawk continues to flash yellow, but I can no longer control any throttle. No response unless I unplug and replug the battery, rearm, and then it will start from the beginning.
(3) When I increase throttle, it doesn’t accelerate right away, it takes like 1s. Same thing with decreasing throttle.
Can someone please educate me as I have no idea what I am doing?
Thank you so much!
Note: I calibrated the 4 in 1 ESC with Dshot 600 (which it states it supports)
Link to T4 Quad: https://www.thingiverse.com/thing:261145
Link to Flysky 10 channels tx and rx: https://www.amazon.com/Transmitter-Controller-Receiver-Helicopter-Quadcopter/dp/B07Z9YNP7S/ref=sr_1_6?keywords=Flysky+FS-i6X+10CH&qid=1575420507&s=toys-and-games&sr=1-6
Link to 4in1 ESC: https://www.amazon.com/Blheli_32-Brushless-Electronic-Controller-Quadcopte/dp/B07YD2BJ8N/ref=sr_1_25?keywords=4+in+1+esc&qid=1575420552&sr=8-25
I wasn’t able to connect BL_Heli_S. the Chrome version of Configurator could not read any data.
EDIT #1: the ESC 4 in 1 has wrong labeling for motor 1-4. 2 and 3 were swapped. I wasn’t aware 
Will re-install props and test.
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EDIT #2: When I armed it and in Stabilize mode, it will spin up for a couple seconds, but if I don’t increase the throttle, it will trigger Failsafe (yellow flashing light). How do I avoid this? The battery is fully charged, changed the throttle minimum to 925 but the minimum at throttle 0 is at 1000?
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Edit #3: Failsafe is due to Battery…