Trying to make a pair of compasses that always point to each other

This page summarizes the projects mentioned and recommended in the original post on /r/AskEngineers

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  • Home Assistant

    :house_with_garden: Open source home automation that puts local control and privacy first.

  • First, I love this idea and if I was still on the road like I used to be (I'm writing this from a hotel but I'm mostly WFH these days) I would dive into this project straight away. The good news is that this is pretty simple. I use Home Assistant as a platform for my home-based stuff, so the solution outlined below is kinda geared towards that being the middle. However, it'd still be doable without.

  • android

    OwnTracks Android App (by owntracks)

  • On your side, you need some way to be tracked. Easy solution is an app on your phone, I like OwnTracks as a privacy-respecting option.

  • InfluxDB

    Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

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  • esphome

    ESPHome is a system to control your ESP8266/ESP32 by simple yet powerful configuration files and control them remotely through Home Automation systems.

  • At home, you just need a network connection and a servo. ESPhome would make this bit a snap. Then, you need to calculate the bearing from home towards your most recent location. The math there is a little more involved, so for that I turn to ChatGPT:

NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Hence, a higher number means a more popular project.

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