BOLT+ Flashing Lights - What's Happening?

Here’s what the LEDs on your BOLT+ indicate under different conditions:

In-Charger Indications

• When placed in the charger, LEDs animate like an RPM gauge in blue, then shift to a color representing battery level:

  • Red: ≤ 20%

  • Yellow: 20–60%

  • Green: > 60%

• LEDs flash while charging and stay solid once fully charged or in certain off-cradle states.

Cradle Charging & Fully Charged

• Charging in cradle: Cradle flashes blue and the robot’s charging LED shines blue.

• Fully charged: Cradle LED turns solid purple; robot LEDs turn off completely.

Firmware Updates

• Applying update: All LEDs pulse orange.

• Update successful: All LEDs stay solid orange until Bluetooth disconnect or a brief timeout.

Waking, Sleeping & Advertising

• Wake flow: Triggered when shaking or removing from cradle—lights show an animation for ~30 seconds.

• Going to sleep: Happens after 5 minutes of inactivity or Bluetooth disconnect.

• Advertising mode: After sleep, LEDs light up to show the bot is connectable for ~60 seconds before entering shake-to-wake mode.

In-App & Connection States

• Upon Bluetooth connection, LEDs turn purple then change to a custom color with the BOLT+ logo.

• Battery level and “Find My Robot” results are shown on the display and LEDs.

Battery Warnings

• Low battery: Three LEDs flash red steadily.

• Critical battery: All LEDs flash red quickly, then the bot automatically powers off after ~3.6 seconds.

Over-Temperature Warnings

• Temperature warning: Display shows periodic warning when overheating begins.

• Critical over-temperature: Message shows continuously for 10 seconds before shutdown.

Other Error Indications

• Bad main app: LEDs flash orange when the main app is invalid.

• Catastrophic error: A fault is detected, software resets; LEDs indicate recovery.