[Solved] Reimaged with melody on ubuntu 18.04 (WIFI not connecting)

Hi,

Downloaded melody ros image for ROSbot2.0 and ubuntue 18.04, tinkerboard from the husarion website at step 2, and flashed to the sd card using etcher at according to step 4 at ROSbot 2.0 & ROSbot 2.0 PRO | Husarion.

Followed steps at ROSbot 2.0 & ROSbot 2.0 PRO | Husarion

  1. Connect to a Wi-Fi network using Ubuntu GUI…

The only option available is to connect hidden WiFi. After entering ssid and password. It would not connect

After 1/2 hour, i rebooted and it connected to WIFI.

To find ip address, I had to use

$ dig +short myip.opendns.com @resolver1.opendns.com, and then

$ ifconfig to ip address.

Next, i was able to ssh. (NOTE: I did have to activate ssh on my laptop due to installing ubuntu 18.04, and ros melody).

Then, it froze. I again connected the keyboard, and mouse. It ask me repeatedly to connect to WIFI. it does not connect to WIFI.

any suggestions?

Thanks
Vineet

Hi,

  1. What is the model of ROSbot you use?

  2. Can you flash again using balena?

  3. Can you try connecting to other wifi?

Best,
Adam

Adam,

Answer to your questions

  1. It is rosbot 2.0

  2. reimaged again with balena three times.

  3. This time, it listed WIFI available and connected to it. Battery low.

I will charge and see how it behaves tomorrow.

Thanks
Vineet

Adam,

I am unable to connect again.

I connected the monitor, keyboard, and mouse.

I turn the switch, and it is not starting up.

Suggestions?

Hi Vineet,

Your problem can be connected with Wi-Fi antenna damage which you describe me in previous mails. May I ask you to try change antenna for different one or plug in some USB Wi-Fi module into back panel and check if connection still be very unstable?

Best regards,
Hubert

Hubert,

I have ordered antenna, and i will test shortly, and let you know the results.

Thanks
VIneet

Hubert, Adam,

Replaced antenna, and it connected right away.

as i am doing next steps, it keeps disconnecting.

Thanks
Vineet

Hubert, Adam,

After replacing the antenna, It is connecting to the wifi every time for the past 6 days.

I think after accidentally flipping the back end of the rosbot, i damaged the antenna.

Thanks again

Vineet

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