HGLRC M100-5883 is a 7.73 g GPS module with an M10 chip, compass, and 10 Hz output for FPV aircraft and drones

HGLRC M100-5883 is a compact GPS module for FPV drones and aircraft that combines an M10 GNSS chip, a ceramic antenna, and a compass. The manufacturer primarily targets fixed-wing and UAV platforms, where not only the model’s position but also its orientation is important.

Official specifications list 72 receiving channels, 10 Hz output, 115200 bps, 3.3–5 V power, dimensions of 21 × 21 × 8.02 mm, and a weight of 7.73 g.

M10 is a newer GNSS generation

M10 is among the newer GNSS solutions used in hobby autopilots and FPV. Its practical benefit is support for multiple satellite systems and faster fix acquisition than older, simpler modules under similar conditions.

A good fix is essential for Return-to-Home. If a model takes off without a sufficient number of satellites, navigation functions may be inaccurate.

Supported constellations

The manufacturer lists reception of:

• GPS/QZSS L1C/A,
• SBAS,
• GLONASS L1OF,
• BeiDou B1I,
• Galileo E1B/C.

More systems mean more available satellites. However, the number of constellations alone cannot make up for incorrect antenna installation.

72 channels and 10 Hz

The receiver has 72 channels and an output rate of up to 10 Hz. This means the position can be updated as many as ten times per second.

A 1 Hz rate would be enough for a slow tracker, but 10 Hz is more suitable for an aircraft or drone and provides the flight controller with fresher data.

115200 baud

Communication uses approximately 115200 bps. The flight controller must have the correct UART, protocol, and baud rate configured.

If the GPS does not work after connection, a common cause is swapped RX/TX wires or an incorrect port configuration, rather than a faulty module.

The compass is useful, but sensitive

The M100-5883 includes a magnetometer. It helps determine the model’s heading.

Interference from power electronics is the biggest problem. The compass can be adversely affected by:

• ESCs,
• motor wires,
• high battery current,
• magnets,
• metal parts.

That is why GPS/compass units are often installed farther from the power section or on a short mast.

The ceramic antenna needs a clear view of the sky

The patch antenna should face skyward with its top side. It should not be covered by a carbon plate, battery, or metal part.

On a fixed-wing aircraft, a suitable location is in the upper or rear part of the fuselage, away from the VTX and high-current cables.

3.3–5 V power

The module supports 3.3–5 V. A standard 5 V output from a flight controller is therefore suitable, provided it matches the controller’s pinout.

Always check the pin labels before connecting. Reverse polarity can damage the module.

Dimensions and weight

It is a larger module for a racing quad, but its size is perfectly reasonable for long-range or fixed-wing use.

The first fix may take longer

A cold start is usually slower. Before the first flight, it is sensible to leave the model in an open area until the flight controller reports a stable fix and enough satellites.

Who is it suitable for?

It makes the most sense for:

• iNav/ArduPilot fixed-wing aircraft,
• long-range drones,
• Return-to-Home,
• GPS logging,
• autonomous projects.

Is the HGLRC M100-5883 worth it?

Yes, if you need GPS and a compass in one module. Its biggest advantages are the M10 chip, multiple GNSS systems, 10 Hz output, and low weight. However, the result depends heavily on installation—the best module will perform poorly if you mount it next to the VTX or power wires.