System not working as expected, may be user error

[25fmr06IwazakiFumiya]

Robot Model

Turtlebot4 Standard

ROS distro

Humble

Networking Configuration

Simple Discovery

OS

Ubuntu 22.04

Built from source or installed?

Installed

Package version

Unknown (Cannot connect via SSH)

Type of issue

Select One

Expected behaviour

Wireless: The TurtleBot4 should connect to Wi-Fi and display the assigned IP address.

Wired: I should be able to SSH into the robot using the static IP address.

Actual behaviour

Wireless:

The IP address on the TurtleBot4 display remained at the default value.

The "TurtleBot4" SSID disappeared from the Wi-Fi selection screen on my PC.

Connection became impossible.

Wired:

The TurtleBot4 display showed "UNKNOWN".

SSH connection failed.

Error messages

SSH Output:

ssh: connect to host 192.168.100.1 port 22: Connection refused

Ping Output:

PING 192.168.100.1 (192.168.100.1) 56(84) bytes of data.
64 bytes from 192.168.100.1: icmp_seq=1 ttl=254 time=3.08 ms
64 bytes from 192.168.100.1: icmp_seq=2 ttl=254 time=11.1 ms

To Reproduce

Steps to reproduce the behavior:

Wireless Setup: followed the manual to configure the wireless IP address.

Wired Setup: configured static IP with the following settings:

PC IP: 192.168.100.29 / Subnet: 255.255.255.0 / Gateway: 192.168.100.1

Target Wi-Fi SSID: "IODATA -e09554-5G"

Set TurtleBot4 IP to: 192.168.100.1

Connected the PC and TurtleBot4 via Ethernet cable.

Executed command: ssh ubuntu@192.168.100.1

Executed command: ping 192.168.100.1

Other notes

I am unable to configure the IP address using either wired or wireless connections. Please advise on a solution.

[smatarCPR]

Hello @25fmr06IwazakiFumiya
Thank you for reaching out on the Turtlebot 4 github page. I am very sorry to hear that your unit is not meeting expectations.

In this situation, where the IP address of the Turtlebot 4 it not available, you can attempt to SSH via an ethernet connection to the Raspberry Pi. The Raspberry Pi has a fixed IP address of 192.168.185.3 on its ethernet interface. More details can be found here - https://turtlebot.github.io/turtlebot4-user-manual/setup/basic.html#troubleshooting

Following this, you should be able to re-run the Turtlebot 4 Setup utility to modify the wi-fi settings.

Let me know how this recommendation works for you. Looking forward to hearing from you soon.
Best Regards,
Saif

[25fmr06IwazakiFumiya]

Hello,

I have resolved the previous Wi-Fi configuration issue by connecting a monitor directly to the Raspberry Pi and manually updating the IP address.

However, a new issue has occurred: The Create 3 base and the Raspberry Pi are no longer communicating. Currently, both the "COMMs LED" and "Battery LED" on the UI board are off (not illuminated). Additionally, the battery percentage on the TurtleBot 4 display shows "0".

I suspect the cause might be related to the disassembly process when I connected the monitor to the Raspberry Pi. Although I believe I reconnected everything correctly, there is a possibility that some wiring is incorrect or loose.

Could you please provide a solution for this issue? If possible, I would greatly appreciate it if you could attach photos or diagrams of the correct internal wiring (specifically connecting the UI board, Raspberry Pi, and Create 3) for verification.

Thank you.

[25fmr06IwazakiFumiya]

The light ring on the power button is illuminated white and rotating.

[25fmr06IwazakiFumiya]

Do you think setting the Raspberry Pi to 5GHz might be related to the issue?"

[25fmr06IwazakiFumiya]

I was able to get the LEDs to light up by setting them to Simple Discovery. I apologize for asking so many questions. Thank you very much for your help.