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Web Based Tuning Simulator for Arducopter PID Control Loops

I remember some years back there existed a web based turning simulator where numerical values such as P, I, D, IMAX, etc could be input along with the drone's mass.  The drone could then be flown vitually to visually look at how various tunes would fly (or not fly).   Does anyone remember this simultor or have a link?   I remember the creator was recruited by 3D robotics back when they were still developing the 3DR Solo. 

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Looking for opinions on my first full build

 Greetings all, I have recently began planning on my first full drone build. I have some experience with building drones in the past, however those were mainly just RTFs that I would install a flight controller on. I have chosen the following list of parts as a basic build, however I would like some input from other people due to my lack of experience. It should be noted that I built this with some of the cheapest parts I could find.What I am asking is:Is there any potential compatibility…

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1 Reply · Reply by Chris Anderson Nov 24

Trouble Shooting F90 Long Range Motor

After a crash, I have noticed that my fourth motor (F90 LRM) is not working, others three work fine. Initially, I thought it was because the wiring from the ESC (f55A pro) to flight controller (Tmotor f7) was loose, so I redid the wiring and plugged it in again and noticed the fourth motor responding on betaflight, however, it stops working after 10 seconds of run time. The ESC beeps three times as well. I also noticed that my FC is really hot. If anyone knows what might be wrong or how to go…

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