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Send JSON to microcontrollers to make them show the networks status
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Mímir (Old Norse "The rememberer, the wise one") or Mim is a figure in Norse mythology renowned for his knowledge and wisdom who is beheaded during the Æsir-Vanir War. Afterward, the god Odin carries around Mímir's head and it recites secret knowledge and counsel to him.

Mimir is a server-client application that enables microcontrollers to advise on the status of a network. It exists out of Mimir, a program that is capable of taking multiple inputs, and Muninn, microcontroller program that recieves messages from Mimir.

It arised out of the need of having a physical indication of where something goes wrong in a network that has devices spread throughout a location.



  • Write a good README file explaining how to actually use this
  • Implement querying to the Prometheus API
  • Replace Arduino with a more general term
  • Research more things to implement


  • Schematics as in how I hacked the Arduino onto the control box.
  • Research good physical triggers for network status (light, sound, ...).
  • Build a nice enclosure.


Pay attention to memory used and free. For example the JSON buffer can easily fill up all causing the Arduino to freeze.
This is specifically designed as to how I hacked the Arduino into the dioder control box, so keep that in mind. Might need to adjust some things.


This project is finished as far as I care about it. Maybe I'll update it later, maybe I won't. If stuff breaks, you get to keep the pieces.

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