my crazyflie won't enter to bootloader mode

[johyeongeun7-hue]

first, my crazyflie doesn't turn on even if i charge the battery and plug it.
second, if i connect it with my laptop with usb cable the lights at M1,4 will turn to blue and M2,3 will blink red
third, i followed the video that showes the tutorial to entering bootloader but it won't go to bootloader mode.

[enyanil]

Hi,

A good way to start with these problems is to follow the Getting Started tutorial for the platform you have (Crazyflie 2.1+ or Crazyflie Brushless) to make sure you have not missed something in the set up.

1. How have you been charging the battery? If you have the battery connected to the Crazyflie and then plug it into the computer, this will charge the battery. You can also charge it with the Battery Charger. Do you have any other batteries you can try?

2. You can see the explanation of the LEDs here. The correct behavior when plugged into PC with USB: Red slow blinking, like a heartbeat, on M1. M2 and M3 should be solid blue if the battery is fully charged, M3 will flash blue if the battery is charging. M4 is off until you connect to the Crazyflie (in for example the client), then it should flash red/green when connected. If you're still having issues, could you take an image/video so I can take a look?

3. You can bootload via the Client following this tutorial. If you meant you want to put the Crazyflie into bootloader mode manually, just press and hold the power button until M2 and M3 start flashing blue, here is a tutorial.

Let me know if I can help with anything else!

[johyeongeun7-hue]

81183637353__9EB5964E-C10F-4EE4-8047-5C0E496D0487.MOV

this is the stage i’m in. i connected crazyflie with usb to my laptop and i can’t find the meaning of this led blink at the links you gave to me

[enyanil]

The LEDs look correct, but I can see that you have an AI deck attached. Have you followed the Getting Started with the AI Deck? Let me know where you get stuck in the tutorial.

Can you attach the console from the client to show the state of the Crazyflie? Please provide more details about your setup as well (what decks you have attached, firmware used).

What is not working now? What is the goal you are trying to achieve?

[johyeongeun7-hue]

i am now stuck at connecting my crazyflie to cfcleint i tried both dongle and usb-laptop connection but both end up with not connected. so i cannot go to next stage. can i know how to find my flie's adress? i tried 1~8 but nothing worked....

[enyanil]

Please remove the AI deck when trying to connect to make sure that the issue is not from the AI deck. The default address for a Crazyflie is 0xE7E7E7E7E7.

You don't need the address to connect with USB. To connect with USB:

• Turn on and plug in Crazyflie with USB.
• Click "Scan" (1. in image below). You might have to do this multiple times.
• The Crazyflie pops up in the dropdown (3. in image below). If you can't see it, click the dropdown and see if it exists in the list.
• Choose your Crazyflie and then press "Connect" (2. in image below).
• When you are connected you can find out the address of the Crazyflie by going to Connect -> Configure 2.x -> Radio Address.

Connecting with radio:

• Make sure your Crazyradio is plugged in and that your Crazyflie is turned on
• Enter the address of the Crazyflie into the address field
• Click "Scan". You might have to do this a couple of times.
• Select your Crazyflie in the dropdown.
• Click "connect".

Can you attach the console output of the terminal running the client if you still are having issues?

[johyeongeun7-hue]

thanks for your help! it was dongle issue