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Make: Getting Started with the Photon by Simon Monk

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Appendix B. Photon LED Codes

The RGB LED of a Photon 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 Wi-Fi network.
  4. Flashing cyan: Connecting to Spark Cloud.
  5. High-speed flashing cyan: Spark Cloud handshake.
  6. Slow breathing cyan: Successfully connected to Spark Cloud.

Other Status Codes

  • Flashing yellow: Bootloader mode, waiting for new ...

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