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Displaying Text Message on Dot Matrix Using Blynk App and Raspberry Pi


We have share a tutorial on how to display Telegram text message on dot matrix before. Now, the objectives still same, but we will send the text to Raspberry Pi through Blynk app.

You may need to refer following tutorial first:

  1. Displaying on MAX7219 Dot Matrix Using Raspberry Pi
  2. Controlling LED on Maker pHAT Using Raspberry Pi and Blynk


This video shows how to display text message on dot matrix using Blynk App and Raspberry Pi

Untuk bahasa Melayu, sila rujuk video dibawah.

Sample Code

This sample code will read the text sent from Blynk app and display to MAX7219 dot matrix.

Thank You


  1. blynk-library-python from vshymanskyy
  2. Luma.LED_Matrix, credit to Richard Hull.

Thanks for reading this tutorial. If you have any technical inquiry, please post at Cytron Technical Forum.

Comments (4)


thank you very much . I learn something new in this vidoe. And it will help for my final year project.

Hi, we’re glad you find it useful. Keep learning. Thanks.

I am having issues. When I run the python script, Line 66 is kicking up an error. Does the script need updated? It just doesn’t like the line “blynk.set_user_task(my_user_task, 5000)” Please let me know what I am doing wrong. Thanks! 🙂

Hi meek424424, thanks for the feedback. It seems like Blynk already update their library, so the sample code here also need to be updated. However, it will take some times for us to update the code. While waiting, maybe you can try to alter the code. Please refer the example code provided by Blynkhere. Thanks.

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