Getting Started with the Photon

Appendix B. Photon LED Codes

The RGB LED of a Photon or Core uses different colors and rates of flashing to indicate what is going on inside the device. After a while, it almost feels like the Photon is demonstrating its current mood by what’s going on in its LED.

Reset Sequence

When you reset a Photon, it will go through the following sequence on the LED:

1. Flashing blue: Listening mode, waiting for network information.
2. Solid blue: Smart Config complete, network information found.
3. Flashing green: Connecting to local WiFi network.
4. Flashing cyan: Connecting to Particle cloud.
5. High-speed flashing cyan: Particle cloud handshake.
6. Slow-breathing cyan: Successfully connected to Particle cloud.

Other Status Codes

• Flashing yellow: Bootloader mode, ...