Author: Marc Staehli, 2019 - updated 2023 with ESP32 Version

see the video: https://github.com/3KUdelta/MDparola_MQTT_monitor/blob/master/pictures/IMG_3175.mp4

Main version:

• NodeMCU V3 - using WiFi to get NTP Time and connect to MQTT broker
• 12 LED matrix units (MAX7219)--> 3 LED units FC16 (search in ALI for "MAX7219 dot matrix module")
• 1 FC16 unit on the left (yellow/green) showing exact time taken from NTP servers
• 2 FC16 units on the right (blue) scrolling MQTT messages
• PIR sensor activating display for 2 minutes after detection
• Using the MD_Parola libraries - thank you for this excellent work! (https://github.com/MajicDesigns/MD_Parola)

The data is coming from some of my other projects: Solar Weather Station: https://github.com/3KUdelta/Solar_WiFi_Weather_Station and my Crocodile Pool Sensor: https://github.com/3KUdelta/Crocodile-Solar-Pool-Sensor.

I am using an Orange Pi Zero with Mosquitto as a MQTT broker.

Print the boxes yourself: https://www.thingiverse.com/thing:2811071, https://www.thingiverse.com/thing:1374504