Motors won't spin up

[Allister (Allister Schreiber)]

Hardware To Avoid When Building Your First Multirotor

Hobbyists new to Arducopter, or Ardupilot in general, often make the mistake of starting out with sub-par hardware which in the best case causes frustration and in the worst case actually costs them more in the long run when expectations are not met and the hardware has to be replaced. So, the following is a suggested list of hardware to avoid. I realize cost is often a driving factor or limitation but this is not considering that, simply performance. Flight Controllers: The APM flight control…

https://ardupilot.org/copter/docs/common-autopilots.html

https://ardupilot.org/copter/docs/initial-setup.html

And most important:

How to methodically configure and tune any ArduCopter

[Cinewhoop Diatone Taycan MX-C] For illustrative purposes, we will use the small 3’’ multicopter depicted above, but the tuning sequence we developed at IAV GmbH will work on almost any other multicopter. This method uses the latest available ArduPilot WebTools, some of the new features of ArduCopter 4.3 and above and best practices from the Ardupilot Community. Sections 2.0 to 2.15 apply to all ArduPilot vehicles: ArduPlane, ArduRover, ArduBoat, ArduSub, ArduBlimp … We will detail the firm…