IoT Device Control via MQTT and Webhook
Control IoT devices like ESP32 remotely using a webpage with on/off buttons that trigger n8n webhook, MQTT publish, and GPIO toggle.
This n8n workflow demonstrates practical IoT control using MQTT protocol. A simple HTML webpage presents 'on' and 'off' buttons. Clicking a button sends the value via webhook to n8n (e.g., http://localhost:5678/webhook/pin-control?value=on). The workflow's Set node formats the payload, then the MQTT node publishes it to a cloud broker on a specified topic.
A remote ESP32 microcontroller subscribes to the broker, reads the payload, and toggles GPIO2 accordingly—turning an LED on for 'on' or off
- Platform
- n8n
- Category
- Health & Fitness
- Price
- $7.99
- Creator
- QualityWorkflows
- IoT
- MQTT
- Webhook
- ESP32
- Device Control
- Automation
- GPIO
- n8n
- Microcontroller
- Remote Control
How to import this workflow into n8n
- 1Purchase or download the workflow to get the n8n workflow JSON file.
- 2In your n8n instance, open Workflows and choose "Import from File" (or paste the JSON with Ctrl+V on the canvas).
- 3Open each node marked with a credential warning and connect your own accounts and API keys.
- 4Run the workflow once manually to verify the data flow, then toggle it to Active.
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