Radio not connecting, not even lighting up

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heeton
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Joined: Wed Dec 25, 2013 10:42 am

Radio not connecting, not even lighting up

Post by heeton » Wed Dec 25, 2013 10:45 am

Hi everyone,
New to the forums, excited to get my CrazyFlie set up :)

I've been trying to connect using the CrazyRadio, but it doesn't seem to even be turning on. I've tried in USB3.0 ports, 2.0 ports, a powered 2.0 hub, and the radio LEDs aren't even turning on.

Is it usual to at least get some activity if plugged in?

EDIT: I have been careful to avoid ESD, grounding myself and only holding the edges of the board, so I'm relatively sure it's a setup/configuration issue, unless these are known to sometimes arrive non-functioning?

Thanks,
~Alex



tobias
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Location: Sweden

Re: Radio not connecting, not even lighting up

Post by tobias » Wed Dec 25, 2013 8:50 pm

That is strange and the first case I see. Normally the LEDs should turn on as soon as the Crazyradio is powered. I'm have a suspicion that the diode has broken off during shipping. Can you see if the component D1 is missing? It is located just below the USB connector. It is safe to short the two pads where D1 where by soldering a short between them as long as the board isn't powered from the expansion header at the same time (which I don't think you will do). You can also contact Seeedstudio support to have them fix it (as they are responsible for the hardware).

heeton
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Joined: Wed Dec 25, 2013 10:42 am

Re: Radio not connecting, not even lighting up

Post by heeton » Fri Dec 27, 2013 4:18 am

Looks a problem with D1, good guess!

One of the joints looked dry, I gave it a nudge and the whole component crumbled off :S
Will be getting in touch with the shop to arrange a replacement or advice.

Thanks :)
Last edited by heeton on Sat Feb 01, 2014 3:52 pm, edited 1 time in total.

tobias
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Location: Sweden

Re: Radio not connecting, not even lighting up

Post by tobias » Fri Dec 27, 2013 12:40 pm

OK, great and good luck fixing it. You can just but a little piece of wire which you solder between the pads. It can be a bit tricky though.

heeton
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Joined: Wed Dec 25, 2013 10:42 am

Re: Radio not connecting, not even lighting up

Post by heeton » Fri Jan 03, 2014 1:01 am

Had another look, when lit from behind it looks like the whole pad has come off!

Replacement it is :)

Thanks for your help.

tobias
Bitcraze
Posts: 1911
Joined: Mon Jan 28, 2013 7:17 pm
Location: Sweden

Re: Radio not connecting, not even lighting up

Post by tobias » Fri Jan 03, 2014 8:26 am

If you want you can still fix it by soldering a small wire according to the picture below.
Attachments
Crazyradio D1 fix.png
Solder red wire to fix missing D1 diode

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