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OpenRoberta / robertalab-ev3dev

roberta lab connector for ev3dev
Apache License 2.0
17 stars 14 forks source link

"You are trying to connect a robot of a different type [...]" #42

Closed DJuego closed 7 years ago

DJuego commented 7 years ago

Hi. I am working in Windows 10 x64 with a openroberta local server (2.2.4).

Recently I have discovered any EV3 fails in connecting. I have test with the Open Roberta connector (updated in 2017.06.03).

I get: You are trying to connect a robot of a different type as selected in the menu. Please switch the robot type in the robot's menu and try to connect again!

However another bricks connect without troubles.

I have any research.

I have two EV3 bricks, I am using USB cable.

1) I load the openroberta page. I select Ev3->EV3dev 2) I try to connect the first EV3. The code is 27Z92WHQ. 3) The connection is successfully. 4) I disconnect the first EV3. 5) I reload the openroberta page. I select Ev3->EV3dev 6) I try to connect the second EV3. The code is HKQGZN3T. 7) The connection fails.

You are trying to connect a robot of a different type as selected in the menu. Please switch the robot type in the robot's menu and try to connect again!

Here the openroberta server log: LINK

I think It is remarkable the text:

token HKQGZN3T belongs to a robot of type ev3, client is set to ev3dev

There is at least one difference between the 'good' EV3 and the 'bad' units. The 'problematic' EV3s had/have a Netgear wifi dongle. The wifi was enabled and it worked perfectly but, casually, we don´t work with Open Roberta with those units... For that reason I had not detected this problem before.

However the wifi is disabled now. No dongle. The problem persists. No idea it it is related. I am going to test more deeply this way... but i need time.

DJuego

afgym-baeu commented 7 years ago

I´ve had the same problem when I changed the hostname (using ev3dev-config on ssh console) to another value than "ev3dev". Still wondering how two robots communicate to each other if I am not allowed to change the hostname ...

DJuego commented 7 years ago

Yes, yes, yes! @MaikBaeumer. Indeed!! That must be! In order to activate the wifi i change the hostname too. I had not noticed that 'pattern'. 👍 it is very probable the problem is not wifi but the hostname!!.

DJuego

Yes! I can confirm it now. I change to the old hostname 'ev3dev' and it works!

ensonic commented 7 years ago

Lets track this via #43.