The GPS Expansion for the Onion Omega is a USB-based expansion that allows your Omega to pinpoint its location using both GPS as well as China’s Beidou satellite positioning systems. It comes with an on-board GPS antenna as well as a built-in u.FL connector to attach your own antenna. Provides up to 1.8m accuracy, 66 search channels, 22 tracking channels, and -165 dBM sensitivity. Up to 10Hz update rate.
The datasheet for the GPS unit can be found here.
The Ethernet Expansion adds an Ethernet port to your Omega with a maximum connection speed of 100Mbps. While the Omega is all about wireless connectivity, a reliable wired network connection can be a great addition to a project, and the Ethernet Expansion is a great tool for quickly reflashing your Omega’s firmware.
The Servo Expansion adds 16 PWM (Pulse Width Modulation) outputs to your Omega. Connect standard servos directly to the Expansion since each channel has its own 3-pin connectors, making it that much easier to get started with your project! This Expansion is great in any application that requires servos, like a robotics project or anything with moving parts. Given that PWM is so useful, you can also use this Expansion to precisely control LEDs or drive a DC motor using an H-bridge.
The Relay Expansion enables your Omega to control two other, independent electrical circuits. The circuits are isolated from the Omega and can operate at much higher or lower voltages than the Omega. So you can control other circuits you’ve built or small household appliances rated up to 60W. This Expansion is perfect for home automation projects since it gives you the ability to control other devices remotely using your Omega.