Hi

 

I just got my 3DR 433 mhz kit. But one of the radios seems to have a problem.

 

When i plug it into my computer using tha FTDI cable the green light stays on and the red one blinks once about every scond. The terminal says:

"**PANIC** 

radio_initialise failed"

 

The hardware seems ok. I was able to get it into bootloader mode by shorting the CTS and ground. firmware was then updated sucessfully. My other "Air"-radio is fine and i can upgrade firmware in "AT" mode and configure it with APM planner. 

Im running:

Windows 7

APM planner 1.1.81 mav 0.9

Any suggestions?

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Sounds like you are out of luck

@kbcopter,

Does it continuously print that panic message, or just once?

If it happens just once then it isn't really an issue - as soon as it prints that message it reboots, and if it doesn't panic again it is fine. If it happens continuously then the radio is broken.

Cheers, Tridge

We recently experience this problem with a 3DR v2 radio. Re-installing the firmware did not fix the issue. In a last ditch effort, we removed the heat shrink wrapper from the radio, baked the radio in the oven at 375 F for 10 minutes, and then let it cool normally for 30 minutes. After this, it worked great. Our guess is there was poor/broken solder connection and our ad-hoc solder reflow fixed it.

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