NAO Messages¶
Meaning of the vocal warnings¶
Here is the meaning of each warning of the robot.
| It says ... | Meanings |
|---|---|
| “Motor hot”. | The motor of a joint is getting too hot. The joint will become less stiff. |
| “Battery low”. | The battery is out of charge. The robot is about to turn off. |
| “Head processor hot” with its eyes blinking. | The CPU in the head is getting too hot. It is better to turn off the robot: Its behavior could be unexpected and if the temperature keeps increasing (>110 degrees celcius), it will turn off automatically. |
| “Head processor overheating, shutdown” with its eyes blinking. | The CPU in the head is getting too hot (>110 degrees celcius), the robot is about to turn off automatically. |
| “Errors occured during the boot, I will not work as usual. Any change done during this session will be lost after reboot. A reboot can fix this. If this happens again, please contact the support.” | Something goes wrong during the boot process, the flash memory dedicated to user purposes will not be available until reboot. This may occurs several consecutive times. If this happens, try stop NAO, wait for a while then boot again. |
| “Errors occured during the boot, I will not work as usual. My head will not respond as expected, especially my audio and video capabilities. A reboot can fix this. If this happens again, please contact the support.” | Something goes wrong during the boot process, the memory storing the head hardware configuration is unavailable until reboot. This may occurs several consecutive times. If this happens, try stop NAO, wait for a while then boot NAO again. |
| “The system upgrade to the version X.Y.Z has failed.” | Something goes wrong during the software version update that was planned during the session before the last boot of NAO. The software is not updated. |
| “The system upgrade succedded, I am running the software version X.Y.Z.” | The software version update that was planned during the session before the last boot of NAO succedded. |
LEDs¶
Torso button¶
Here is the meaning of each light of the robot. During the first boot, you will also see the eyes blinking with all three colors.
| LEDs | Meanings |
|---|---|
|
Blinking blue light means that the robot is booting. Wait until the process is finished. |
|
During the boot process, a steady green light indicates that the boot process is stuck in the boot loader. Contact the Aldebaran team if it happens several times. When the boot process is over, a steady green light indicates that the battery charge is 5/5. |
|
A short orange light means that the battery charge is 3/5 or less. |
|
Slow red blinking light means that the battery charge is less than 1/5. You should charge immediately. |
|
Slow yellow blinking light means that NAOqi is not running. Restart NAOqi or your robot. |
Ears on boot time¶
While the booting up, progress is displayed on NAO’s ear LEDs in 4 steps:
| Ear LED Brightness | Means ... |
|---|---|
| 0 % | The robot is in the early boot step, initializing the hardware. |
| 25 % | Hardware is initialized. |
| 50 % | Filesystems are ready to use. |
| 75 % | Network and ssh are started. |
| 100 % | NAOqi is started. |
Ears on upgrade¶
When upgrading the embedded system, to make things clearer to understand, the boot progress displayed on ear LEDs is divided in 4 steps:
| Ear LEDs | Meaning |
|---|---|
| The front half-circle is blinking. | Checking integrity of the image to be flashed. |
| Animation like a progress bar. | The OS image is being flashed. |
| The rear half-circle is blinking [1]. | Checking integrity of the flashed data. |
| The front and rear half-circles are alternatively blinking [1]. | Restoring fatory settings. |
| [1] | (1, 2) Only on NAO v4. |