Check out the table below for details on what each of Sphero Mini's light patterns means: 

While Plugged in
Pulsing blue
Sphero Mini is charging
Solid green    
Sphero Mini is fully charged
While Updating 

Rainbow colors
Updating Firmware
Alternates blue/yellow
Corrupt Firmware (force quit the app and relaunch while charging) 

During General Use

Rapid rainbow colors Sphero Mini is going to sleep
Yaw-dependent rainbow colors Sphero Mini is idle
Constant white light     Initial connection made 
Pulsing red  Low battery, Mini needs a charge

If you have any questions or concerns, please follow the link to open a new support ticket.

Or feel free to contact us at your convenience: