Hiking Tracker Prototypes

[last updated: 2022-03-20]
go to: GPS module
go to: hiking tracker
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• First attempts:
  • Initial function test (see GPS module page) was successful, using Arduino Nano hardware serial.

• GPS + OLED:
  • However, I want to add an OLED display to allow viewing position data when portable, ie. not connected to a computer with a serial monitor.
    The (go to:) Adafruit OLED module that I'm using communicates with i2c (I think), so it should not directly interfere with the GPS' serial link,
    however I could not get it to work. There was no readout on the OLED.
  • Forums suggested the problem had to do with the GPS and softwareSerial libraries.
  • So I revised the program to use alternative libraries:
    NeoGPS (NMEAGPS) instead of Adafruit_GPS.
    This was successful (Arduino program: ...), with both GPS module and OLED readout working.
  • However I have no idea how or why it works, since there's no serial communication library included ...

• Revisions needed:
  • Current software (...) only prints out 2 decimal digits of lat/lng data, not sufficient for any kind of location precision.
  • Altitude data is variable and clearly inaccurate. May need to add an actual barometric sensor for better accuracy.

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