Smart Matrix

By on December 15, 2020
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We wanted a display in our makerspace that could be updated as visitors interacted with the space. This project serves as a template for future IoT device to communicate with the display via MQTT. We have many games in our space and would like to integrate high score achievements with the display. Also, we would like to welcome patrons when they open the door.

This matrix utilizes the MQTT protocol to display scrolling messages. We followed this tutorial for the intial set up of the pi with the matrix: I recommend checking out the python example code to get a feel for how the images or the text is displayed. Our current set up is coded for a 32×128 matrix (two 32×64 matricies). Here are the docs for paho-MQTT: Note that there is also a C++ library for paho-MQTT here:

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About Emanuele Signoretta

Studying electronics and communication engineering at Politecnico di Torino. Electronics, IT and Open Source enthusiast.

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