fpv.py failed

[noahzn]

I'm testing with the script fpv.py. I connect to the wifi SSID "wifi steaming example" and I use URI = uri_helper.uri_from_env(default='tcp://192.168.4.1:5000'). The drone flies for about 1 second and then stops. I can only see one image in the Qt window. The error is:

Exception while reading transport, link probably closed?
[WinError 10054] An existing connection was forcibly closed by the remote host File "cflib\cpx\__init__.py", line 143, in run packet = self._transport.readPacket() File "cflib\cpx\transports.py", line 64, in readPacket size = struct.unpack('H', self._readData(2))[0] File "cflib\cpx\transports.py", line 60, in _readData data.extend(self._socket.recv(size-len(data))) ConnectionResetError: [WinError 10054] An existing connection was forcibly closed by the remote host

I'm using Windows 10. The opencv-viewer.py using WIFI works well.

I guess maybe it's a problem with my updating the firmware using the cfclient bootloader? What's the difference between "Flashing Wifi Example using aideck_gap8_wifi_img_streamer_with_ap.bin (https://www.bitcraze.io/documentation/tutorials/getting-started-with-aideck/)" and "Configuration Wifi example (https://www.bitcraze.io/documentation/repository/aideck-gap8-examples/master/test-functions/wifi-streamer/)"

update 26-11-2022:
I tried many times, and it succeeded three times. Most of the time, it took off for about one second, and then the connection was lost. And I noticed then the crazyflie restared automatically.

update 26-11-2022 night:
I reinstalled the firmware 2022.05, and I also had the not taking-off problem. Then, I installed the firmware 2022.09, and flashed the gap8 bootloader. After that, I tried to flash the wifi_img_streamer_with_ap.bin, but it hangs at 6%.... I need help, please.

[knmcguire]

Hi! There seem to be some issues with the current FPV example as is unfortunately. So currently this is what works for sure at the moment:

• Install the latest release (2022.09) on both the AIDeck and the crazyflie via the instructions of these: https://www.bitcraze.io/documentation/tutorials/getting-started-with-aideck/
• Do not configure and reflash the Crazyflie for wifi (so just leave the current as is), just connect to the 'Wifi streaming example'
• On the cfclient when you connect to the crazyflie, you can see the AIDeck name in the console: CPX: ESP32: I (800) DISCOVERY: Hostname is aideck-AABBCC (The AABBCC is unique to your aideck)
• In the FPV.py file, replace the URI with tcp://aideck-AABBCC.local:5000

Unfortunately, it seems that reflashing the GAP8 bootloader seemed to have broken or bricked it somehow... but since this is a different topic please keep an eye on this discussion: https://github.com/orgs/bitcraze/discussions/442. Once that has been fixed you can try what I've proposed above and report back.

[noahzn]

It works well on my Ubuntu laptop with a grayscale camera. Thanks!

[knmcguire]

Great!

Just mind if you do start flying, with older batteries it might be that there is too much going to the motor as it is trying to take of faster. That will be probably the cause you had before of it taking off and losing connection. What you could do is to figure out to reduce the speed of take-off or perhaps implement the high level commander take off at the beginning of the script as that has a smoother take off trajectory then just the very rough setpoint height.

[knmcguire]

Great!

Just mind if you do start flying, with older batteries it might be that there is too much going to the motor as it is trying to take of faster. That will be probably the cause you had before of it taking off and losing connection. What you could do is to figure out to reduce the speed of take-off or perhaps implement the high level commander take off at the beginning of the script as that has a smoother take off trajectory then just the very rough setpoint height.

[noahzn]

OK. I think I have an old battery because we bought this crazyflie last year.
So you suggest that I use takeoff() and maybe set the duration_s of taking off, instead of using send_hover_setpoint() in the fpv.py

[knmcguire]

yes indeed, I haven't tried it out myself but perhaps in the init function of the python script. Hopefully that works.