Outputs a tilt compensated compass heading over WiFi in NMEA format
Uses an ESP32 and a CMPS 14 breakout. Also supports an OLED display but this is somewhat redundant
It provides a WiFi access point. This AP has two Telnet servers; port 23 - This has a stream of current compass headings in NMEA "HDM" message format - 5 per second port 1023 - This supports a simple configuration and calibration menu