Tilted in flight?

I was testing a quad that I scratch built. It has been flying in stabilise mode and responded to the radio inputs, but I had never let it go too far away. This morning I loaded arducopter 2.5.3 before going to test the model.

It has an apm 2 and is set for super simple mode and has a sonar sensor fitted and a ubec supplying the power, even though there is a power distribution board - no esc is powering the board, just the ubec.It also has an attopilot 180a voltage board fitted and a flycamone. I have spent a long time trying to reduce noise by using all the recommended methods.

The quad flies ok in stabilised mode and once passed 20 metres, it didn't want to respond to my transmitter inputs properly, so I had to use RTL to get it to come back, which it did well.

I then tried loiter and it was ok briefly, until it decided to tilt and wander off. Nothing I could do would bring it back, even RTL wasn't getting it to come back. It ended up head first into a ploughed field quite a distance away!

Anyone know why it tilted and wouldn't respond to the radio commands?

2012-04-16 12-41-27.tlog

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  • I discovered why the radio didn't seem to respond properly, for some reason the super simple setting had reset back to 0 after 2.5.3 was loaded into the apm, that explained why it appeared to not respond correctly to my radio inputs as effectively they were reversed because I had turned around after take off expecting super simple to sort everything out for me!

    I have no clue why it tilted and decided to wander off though, that is most baffling, has this happened to anyone else?

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