Bitcraze Forums

Hallo,
after the fw-flash lights only the blue led!?
(https://bitbucket.org/bitcraze/crazyfli ... 2013.4.bin)
If I press the on-butten, all leds lights short, than red and green off - with usb-cable the same reaction
Whats wrong?
Thanks!

I think it is some problem with a corrupt firmware. Try flashing it again.

How can I do this - I have not radio contact?
Is it over USB possible?
Thanks

Hi,

If you follow the instructions here you can flash new firmware. Just remember that after you click Initiate cold boot you should power on the Crazyflie within 5s.

/Marcus

Hi marcus,
I click "Initiate cold boot" and after this I press quickly the Heli powerbutton on - nothing, connection timeout...
I try this several times
Only the blue led lights permanently...
What remains to be done?
Thanks Tim


Info: Using config path: C:\Users\Tom\AppData\Roaming\cfclient
Info: sys.path= ['C:\\Program Files (x86)\\Crazyflie client', 'C:\\User
ppData\\Roaming\\cfclient', 'C:\\Program Files (x86)\\Crazyflie client\
INFO:cfclient.utils.config:Dist config read from C:\Program Files (x86)
e client/cfclient/configs/config.json
INFO:cfclient.utils.config:Config file read from [C:\Users\Tom\AppData\
fclient/config.json]
INFO:cfclient.utils.input:Parsing [Generic_OS_X.json]
INFO:cfclient.utils.input:Parsing [PS3_Mode_1.json]
INFO:cfclient.utils.input:Parsing [PS3_Mode_2.json]
INFO:cfclient.utils.input:Parsing [xbox360_mode1.json]
INFO:cfclient.utils.logconfigreader:Parsing [stabalizer.json]
INFO:cfclient.ui.tabs.FlightTab:Changed flightmode to Advanced
INFO:cfclient.ui.tabs.FlightTab:Changed flightmode to Advanced
INFO:cfclient.ui.tabs.FlightTab:Clientside X-mode enabled: True
INFO:cflib.crtp.radiodriver:v0.5 dongle with serial N/A found
INFO:cflib.crtp.radiodriver:v0.5 dongle with serial N/A found
INFO:cfclient.ui.dialogs.bootloader:Connected in coldboot mode failed
INFO:cfclient.ui.dialogs.bootloader:Connected in coldboot mode failed

Hi Tim,

If I understand correctly you have been able to run the previous firmware and also update it using the bootloader (which is causing this problem)?

When you power on the Crazyflie the red/green leds blink quickly right? That is the bootloader that is checking for a connection. If you have clicked Initiate cold boot then you should see the red LED on the Crazyradio light up. If you power on the Crazyflie too early (before the red LED is lit on the Crazyradio) or to late (after you get connection failed), then the bootloader will not be able to connect.

Could you try a couple of more times and see if you have any luck? Don't use the USB cable, just power on normally using only the battery.

/Marcus

marcus wrote:Hi Tim,

If I understand correctly you have been able to run the previous firmware and also update it using the bootloader (which is causing this problem?/Marcus

I try update from the last one to the newest (https://bitbucket.org/bitcraze/crazyflie-firmware) - it was the first time and the upload end with 100%...
After this i fly 2 or 3times and switch off the CF. After this I have problems...

marcus wrote: When you power on the Crazyflie the red/green leds blink quickly right? /Marcus

No, all led lights only one time shortly and after this only the blue lights

Is anything getting hot? Do you have access to a multimeter? If so measure the VCC voltage. You can do this from the bottom side at the through hole pads located just above the logo. When you have it powered from battery do you get ~2.8V.

thanks a lot... CF is alive, I don't know why. I charge the battery again, 2.7V on the bottom and suddenly all 3 led are blinking
I flash the last firmware again and now no problems!
Thanks!

OK, great and strange. If it behaves strangely again it might be some HW problem and you should contact Seeedstudio cutomer support.
Marking as solved.