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I found the problem! There is a cable, consisting of three wires, that connects the receiver to it's satellite. The ground lead is broken off at the connector.

Well, I bought the update cable - it arrived today, and I downloaded the Spektrum Updater application, But I could not find any firmware updates. I contacted tech support at Horizon Hobby and he confirmed that the version of firmware I have is the latest. He had no suggestions other than to...

I have a DX8 transmitter - the manual does not mention upgrading firmware and I can find no programming port. I don't know why, all of a sudden, I would need to change firmware on the receiver, as it has been working fine. It just recently started exhibiting this behavior. I would think that...

This morning I tried to fly my Tarot quad but could not get it to arm nor tilt the camera gimbal. After taking it home and connecting it to my laptop for troubleshooting I noticed the the LED on the receiver was blinking even though the transmitter was on. Going to the Radio Calibration page in...

I think the thing that worked the best was replacing the ESC's with some that could easily be programmed. When I made sure that the timing was "Intermediate", I got much better results. Click here.

This will be my last post on this subject. I have had several successful test flights and today I flew a waypoint mission - a little over three minute flight but it was flawless. I don't know if twisting the wires did anything, but the aircraft seems to fly well. Here is a video of today's...

Here is my experience for what it's worth. I have built a Parallax Elev-8, Tarot 680 Hexcopter, a Tarot 650 Sport and 650 Ironman. I have also crashed the Elev-8 multiple times and completely rebuilt it. First off, you have to decide what you want to do with your homebuilt aircraft - learn to...

I have been wanting to get a Mavic ever since DJI introduced it, but it was too pricey for my budget. so I contented myself with building a Tarot Ironman - I wanted a stabilized aerial video platform. But I had an accident with the Tarot - that's another story, suffice to say, 17" carbon fiber...

Well, after all the technical issues I finally had two successful test flights! I resolved the Bad GPS warning problem - I had to plug the GPS into a port below the compass port. I also programmed the ESCs for Intermediate Timing, which seemed to resolve my motor surge issues. The first test...

I took my modified Elev-8 out for a flight a few days ago and it behaved strangely - would not hold position in Loiter mode and and started to fly way when I switched to RTL, so I had to take over and land manually. I pulled the flight controller off and opened up the case to make sure that the...

So, I replaced the ESC's with some T-Motor AIR 40A ESCs that I found at a reduced price on ebay. I flew the Tarot and found that the surge problem seemed to be better but the aircraft would not maintain altitude during either Loiter or Alt Hold flight modes. A check of the dataflash logs showed...

I finally put the aircraft back together - replaced a bullet connector on two motors that had questionable solder connections. I also lengthened the ESC/motor leads and twisted them. I took it out for a short flight and the problem persists - now I suspect an ESC synch issue. I am going to...

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!