Micro Compass ESP32

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Micro compass is an open source compass UI project with esp32c3 mini and round tft display.


The UI is designed in SquareLine Studio and built with PlatformIO.



Parts required:

1. ESP32 C3 Supermini

AliExpress➡️ Buy Option 1  Buy Option 2

2. 1.28" GC9A01 display (7 Pin Version)


AliExpress➡️ Buy option 1  Buy option 2 

3. QMC5883P magnetometer (GY-271 module)

AliExpress➡️ Buy option 1  Buy option 2 

(Note: This project is based on QMC5883P not HMC5883L)

Circuit Diagram
Source Code:

Visit my github repository for code  https://github.com/LazydaysCr/micro-compass

I've made a step by step guideline on how to upload the code and calibrate the compass.


If you face any issue send me an email with subject "micro compass" to abid.business01@gmail.com

Comments

  1. GoogleAndroidTasticAugust 9, 2026 at 1:53 AM

    I'd love one of these for aligning a telescope for astrophotography, does it reflect magnet or true North?

    ReplyDelete
    Replies
    1. Abid (admin)August 9, 2026 at 10:02 PM

      Not true north. Magnetic north only.

      Delete
    2. Sierra HotelAugust 14, 2026 at 5:00 PM

      The hardware MEASURES magnetic north, but you can use a fixed offset in the code, or an adjustable offset from either GPS, or an external knob to have it display true north.

      Delete
  2. thirtyWestAugust 17, 2026 at 7:30 AM

    This comment has been removed by the author.

    ReplyDelete
  3. thirtyWestAugust 17, 2026 at 7:31 AM

    Can you integrate a battery?

    ReplyDelete
  4. AnonymousAugust 22, 2026 at 9:11 PM

    I wanted this to work so bad. I’m a pilot and low how this matches a vertical compass card, however I was not able to get it to accurately read known headings. When turning the the Magnetometer 180 from a fixed point it would only read 165 degrees. I’ve calibrated twice with no change. Would really like for it to work correctly.

    ReplyDelete

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