Crazyflie 2.1 blue led and won't connect with usb

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Zolilio
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Joined: Tue Apr 26, 2022 8:15 am

Crazyflie 2.1 blue led and won't connect with usb

Post by Zolilio »

Hello.

I've tried to fly one of my Crazyflie and accidentally crash it (not a big deal, it crashed many times without damage). The drone have now the M2 led glowing in blue (without flashing) while the other leds are off. I thought that it's maybe a firmware problem, but when I tried to connect my Crazyflie with USB to my computer, It doesn't seem to detect the connection.
Does my Crazyflie is broken ?
kimberly
Bitcraze
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Joined: Fri Jul 06, 2018 11:13 am

Re: Crazyflie 2.1 blue led and won't connect with usb

Post by kimberly »

Hi!

Hmmm... usually we will only see this after a faulty flash of a firmware... so I hope the STM mcu is not fried now.

Are you able to put the crazyflie in bootloader mode? Or press the power button for a long time while at the same connecting the battery? Do you see 2 blue LEDs flashing then?
Zolilio
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Joined: Tue Apr 26, 2022 8:15 am

Re: Crazyflie 2.1 blue led and won't connect with usb

Post by Zolilio »

Hi kimberly and thanks for answering.

Yes, it can still be in bootloader mode (the 2 leds works fines) but it still won't be recognized as connected by my PC.
Also, I noticed that the crazyflie can be charged up when plugged on PC, so it's not a USB port problem.
kimberly
Bitcraze
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Joined: Fri Jul 06, 2018 11:13 am

Re: Crazyflie 2.1 blue led and won't connect with usb

Post by kimberly »

Ah good! If you are able to put it into bootloader mode, then you can reflash the firmware in recovery mode. Please follow these instructions with a crazyradio PA and the CFclient. https://www.bitcraze.io/documentation/r ... very-mode/

Let us know if this works!
Zolilio
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Joined: Tue Apr 26, 2022 8:15 am

Re: Crazyflie 2.1 blue led and won't connect with usb

Post by Zolilio »

That's the problem. The crazyflie can be put in bootloader but when I connect it to my PC with USB, the PC don't see the crazyflie connected. So I can't upload the firmware.
kristoffer
Bitcraze
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Joined: Tue Jun 30, 2015 7:47 am

Re: Crazyflie 2.1 blue led and won't connect with usb

Post by kristoffer »

USB unfortunately does not work for this, you must use the Crazyradio
Zolilio
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Re: Crazyflie 2.1 blue led and won't connect with usb

Post by Zolilio »

Hello again.

I've successfully accessed my crazyflie in bootloader mode and I've downloaded the firmware in it. Now it's working perfectly.
Thank you for your help, kimberly :)
kimberly
Bitcraze
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Joined: Fri Jul 06, 2018 11:13 am

Re: Crazyflie 2.1 blue led and won't connect with usb

Post by kimberly »

Great! Happy it worked out
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