How to transmit data from esp8266 to raspberry pi using mqtt broker

Опубликовано: 05 Март 2025
на канале: CodeRift

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*tutorial: transmitting data from esp8266 to raspberry pi using mqtt broker*

in this tutorial, we will guide you through the process of setting up communication between an esp8266 and a raspberry pi using an mqtt broker. mqtt (message queuing telemetry transport) is a lightweight messaging protocol that is commonly used for iot applications to facilitate communication between devices.

*step 1: setting up the mqtt broker on raspberry pi*

1. install an mqtt broker on your raspberry pi. one popular option is mosquitto. you can install it by running the following commands:

2. start the mqtt broker by running the following command:

3. make sure the mqtt broker is running and accessible on your raspberry pi.

*step 2: setting up the esp8266*

1. install the necessary libraries in your arduino ide to enable mqtt communication on your esp8266. you can use the pubsubclient library for this purpose.

2. connect your esp8266 to your wi-fi network and configure it to connect to the mqtt broker on the raspberry pi. you will need to provide the ip address of your raspberry pi and the mqtt topics you want to use for communication.

3. write a sketch for your esp8266 that publishes data to a specific mqtt topic. here is an example code snippet:

*step 3: receiving data on raspberry pi*

1. write a python script on your raspberry pi to subscribe to the mqtt topic and receive data from the esp8266. you can use the paho mqtt client library for this purpose.

2. here is an example python script to receive data from the esp8266:

*step 4: test the communication*

1. upload the sketch to your esp8266 and run the python script on your raspberry pi.

2. you should see the data published by the esp8266 being received and printed on the raspberry pi.

congratulations! you have successfully set up communication between an esp8266 and a raspberry pi using an mqtt broker.

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