OpenCR board battery low warning, connected to power supply

[seliboii]

ISSUE TEMPLATE ver. 0.4.0

1. Which TurtleBot3 platform do you use?

   • [*] Burger
   • Waffle
   • Waffle Pi

2. Which ROS is working with TurtleBot3?

   • ROS 1 Kinetic Kame
   • ROS 1 Melodic Morenia
   • ROS 1 Noetic Ninjemys
   • ROS 2 Dashing Diademata
   • ROS 2 Eloquent Elusor
   • ROS 2 Foxy Fitzroy
   • [*] etc (ROS2 Humble)

3. Which SBC(Single Board Computer) is working on TurtleBot3?

   • Intel Joule 570x
   • Raspberry Pi 3B+
   • [*] Raspberry Pi 4
   • etc (Please specify your SBC here)

4. Which OS you installed on SBC?

   • Raspbian distributed by ROBOTIS
   • Ubuntu MATE (16.04/18.04/20.04)
   • Ubuntu preinstalled server (18.04/20.04)
   • [*] etc (Ubuntu 22.04)

5. Which OS you installed on Remote PC?

   • Ubuntu 16.04 LTS (Xenial Xerus)
   • Ubuntu 18.04 LTS (Bionic Beaver)
   • Ubuntu 20.04 LTS (Focal Fossa)
   • Windows 10
   • MAC OS X (Specify version)
   • [*] etc (Ubuntu 22.04)

6. Specify the software and firmware version(Can be found from Bringup messages)

   • Software version: [x.x.x]
   • Firmware version: [x.x.x]

7. Specify the commands or instructions to reproduce the issue.

   • HERE

8. Copy and Paste the error messages on terminal.

   • HERE

9. Please describe the issue in detail.

   USER3 Red LED lights up after uploading firmware to OpenCR (according to steps 3.3, 1-7 https://emanual.robotis.com/docs/en/platform/turtlebot3/opencr_setup/#opencr-setup), I've found this is the low battery error warning but the board is connected via power supply. Currently the board is connected to the raspberry pi by USB and is also supplying power to the raspberrypi from the 5V output.

I have measured the 12V outputs on the OpenCR board and they were 12.10V and 11.97V, but from what I've seen online is that the battery low warning should only start when the voltage drops below 11V.
I have also tried reuploading the firmware.

[GyuH13]

Hi @seliboii
It is not appropriate to supply power to the Raspberry Pi connected to OpenCR via USB or USB-C, as this may not provide sufficient voltage.
I just tried supplying power by usb - c. DynamixelSDK didn't operate so bringup launch didnt operate,too.
Also the topic /battery_status show a voltage of almost 1.1V.
So i recommand using rated battery or dedicated power supply.