Introduction

This beginner blueprint demonstrates how to control an LED from the Particle Console using a cloud function (setLED). It's a simple pattern for remote control and state reporting.

Supported devices

Hardware and supplies

• Supported Particle device
• USB cable

Project description:

The firmware registers a cloud function setLED that accepts "ON", "OFF", or "TOGGLE". After updating the LED pin and internal state, it publishes a private led_state event with "ON" or "OFF". This approach provides both control and visibility for dashboards, webhooks, or other devices subscribing to the state.