"I have a pixhawk and i follow the videos.
Thank you."

"Hello again, i want to ask if the wire connection is the same as apm ,because i can't calibrate the esc and also i can't arm the fc.
Thank you."

"ok, thank you."

"Thank you, when you say pay attention to safety what do you mean? Is there something that must have to pay attention?
Thank you again."

"iskyview@yahoo.com
Thank you."

"Hi, can you share your param. file.
Thank you."