The hidden (server) side of the IoT Matrix

A project log for IoT RGB LED Matrix Controller (ESP32)

This project is about building and programming an ESP32 based controller for a 32x32 RGB LED matrix, controlled from Node-RED over MQTT

solenoidSolenoid 03/12/2018 at 20:210 Comments

Writing the ESP32 firmware, with all its timing critical constraints, was only half of the job, the actual image generation happens on an MQTT server (hosted on a Raspberry Pi). I've made one of my most complex flows:

It does the following things:

In the user interface one can: