The Pixhawk 2.1 (now commonly known as ) is a modular flight controller designed for high-performance and commercial drone systems. Its architecture separates the core flight management unit (the "Cube") from the physical interface board (the "Carrier Board") via a patented 80-pin DF17 connector PX4 Autopilot Core Interface: The 80-Pin DF17 Connector
TELEM ports and GPS ports are both 6-pin or 10-pin JST-GH, but they are not interchangeable. If you plug a GPS into TELEM1, the UART baud rate will mismatch (GPS expects 38400 or 115200, TELEM default is 57600). Always double-check the port label. pixhawk 2.1 pinout
However, even the most powerful flight controller is useless if you cannot connect your GPS, telemetry radio, ESC, or servos correctly. Understanding the is not just helpful—it is mandatory for safety and performance. The Pixhawk 2
In this 2,500+ word guide, we will dissect every port, pin, and signal on the Pixhawk 2.1. By the end, you will have a master-level understanding of wiring for ArduPilot and PX4 firmware. Always double-check the port label
PX4-PH21-001 Version: 1.0 Date: October 2023 (Updated for 2026 compatibility)