Page 1 of 1
Crazyflie 2.1 blue led and won't connect with usb
Posted: Thu May 05, 2022 2:33 pm
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 ?
Re: Crazyflie 2.1 blue led and won't connect with usb
Posted: Mon May 09, 2022 7:12 am
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?
Re: Crazyflie 2.1 blue led and won't connect with usb
Posted: Wed May 11, 2022 3:01 pm
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.
Re: Crazyflie 2.1 blue led and won't connect with usb
Posted: Thu May 12, 2022 8:36 am
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!
Re: Crazyflie 2.1 blue led and won't connect with usb
Posted: Thu May 12, 2022 10:09 am
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.
Re: Crazyflie 2.1 blue led and won't connect with usb
Posted: Fri May 13, 2022 6:46 am
by kristoffer
USB unfortunately does not work for this, you must use the Crazyradio
Re: Crazyflie 2.1 blue led and won't connect with usb
Posted: Tue May 17, 2022 8:33 am
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
Re: Crazyflie 2.1 blue led and won't connect with usb
Posted: Tue May 17, 2022 1:48 pm
by kimberly
Great! Happy it worked out