GPS for autopilot

Updated: 05 September 2020

I have a TruTrak Vizion 385 autopilot unit installed on my plane.

The autopilot integrates with GPS via serial interface (RS-232).

It provides lateral navigation based on basic NMEA messages from GPS.

I’ve built a simple GPS unit based on GY-GPS6MV2 unit with TTL-to-RS232 serial level converter based on MAX232ESE chip and linear power regulator based on uA78M05IDCY.

Input voltage: 5-25 V

Current: 80 mA