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I have completed a build of a Tarot 650 Ironman, but during initial test flights, I'm experiencing random twitches and surges from the motors. I've asked for help on this and the DIY Drone forums with no advice. I've reflashed the flight controller, redid all the calibrations, including the ESCs...

Build is complate. Now I have to install the firmware and go through the calibrations.

Okay, I have finally wired up the ESCs and motors. I had to reposition the MATEK pcb and APM power module as the boorms were interfering with the wires, so I had to take take it apart and move the MATEK underneath the bottom chassis plate. I put the booms on and now I'm happy with the wiring...

I need some advice/opinions. I have decided to mount my 40A OPTO ESCs underneath the main chassis as shown: I have attached velcro squares to the ESCs and onto the Tarot battery plates and sandwiched them together. My question is will I run into heat issues with this arrangement? the...

The frame, ESCs , 100 mW telemetry raios and Pixhawk arrived. I agonized over what to do for power distribution but finally decided to go with a Matek FCHub power distribution board - I think that it will provide cleaner and more reliable connections and I like having on board 5V and 10V power...

It has been awhile since I've reported and since then I have moved. But I thought I'd take a moment and bring you up to date. first of all, the bad news - my aircraft crashed on its second flight. According to the logs I suffered a brownout and the motors quit and it just fell out of the sky...

It is when you're a wimp like me!

Probably around -3.5 C.

I have given it some thought, but before I attempt that I want to fly both at the same time - enter similar waypoints but have one follow the other at a higher altitude and of course have separate landing spots.

I just moved to Loveland, Colorado - my house backs up to a golf course. This morning, I decided to fly one of my modified Elev-8 quads over the course as it was a nice, sunny morning but very cold - no golfers out on the course. I uploaded a simple waypoint mission - the aircraft was to climb...

Jeremy, regarding landing gear, I used nylon rods, which I bought on Amazon. They are stronger and flex which absorbs a lot of shock on hard landings:

I remember some time ago reading about parachute systems for drones - here a few links I found: https://fruitychutes.com/uav_rpv_drone_recovery_parachutes.htm?gclid=CjwKCAiAx4fhBRB6EiwA3cV4KqNyZEXyICmTIUfMuxVnQsxuCNy_WJmlvC3YOhgunKwlamqL5RDqWhoCkkYQAvD_BwE https://www.marsparachutes.com/...

I know what you mean about being gun-shy. After my two crashes I decided to give up, but like you, I had a bunch of parts laying around and I missed not having a flying video platform, so I decided to build a new one - the Tarot Iron Man. It was scary taking off yesterday, but it did fly. But...

I am curious about crash #3 as I had the same experience with two crashes myself - here is the video from one of them: Both, the modified Elev-8 and Tarot 650 Sport had ESCs mounted under the motors with power/ground leads running through the booms to the pwd harness in the chassis. I learned...

Well, I was searching through some old posts in a couple of forums - seems that this problem has cropped up in other builds. There was a lot of technical stuff being mentioned that seemed to do with code in the APM firmware, but since the posts dated back to 2013 or so I figured that any code...

So, this morning, the air was calm though somewhat cold but conditions were right for a test flight. Being it's first flight the objectives were to make sure all flight controls - pitch, roll, yaw worked fine. Then put the aircraft into Loiter mode and test the compass/gps; in Loiter mode, yaw...

Repairs have been completed. I calibrated the ESCs and redid the radio calibration. The compass appeared okay when I connected to Mission Planner but I did tweak the compass declination a tad to get the aircraft heading to match the compass on my iPhone. I also did the motor/compass calibration...

Good news! After weeks, which seemed an eternity, my new Hoobbywing 40A ESCs arrived! It will take a day or two to swap out the other three ESCs and install these, and put the aircraft back together, check everything and try again, weather permitting. Stay tuned!

Thanks for the link... looks compelling. I have some time to decide what to do - may go ahead and begin the build as I don't need the f.c. until later. Only concern is I have limited room and if I get started with this build and my ESC arrives next week, I'll want to switch projects as I'm hot...

So, while waiting for a replacement ESC that I burned up in my Tarot 650 Iron Man, I was going through my box-o-parts - stuff I had ordered some time ago as spares for my Elev-8's ( I had two), such as motors mounts, and parts I salvaged from a crash - three booms, chassis plates, misc...