High precision GPS board

The Pre-GO PPP (Precision Geolocation) uses U-Blox Precise Point Positioning algorithm to give high accuracy geolocation without external computational burden. The antenna is onboard.

Use with a Raspberry Pi running rtklib, the u-blox NEO 7P GPS/GLONASS receiver provides the raw data output required for centimeter-level accuracy.


The Pre-GO PPP: High precision GPS with onboard antenna

This board provides a raw data feed for rtklib -- and can get you centimeter level GPS accuracy. That alone is compelling. The U-Blox Neo-7P GNSS module also includes their proprietary PPP (Precise Point Positioning) solution for your location-aware project, delivering decimeter-level accuracy without taxing the host processor.

Running rtklib on a host processor, such as many of our Gumstix COMs, or Raspberry Pi, or BeagleBone, makes this product ideal for surveying, cartography and geodetic applications. Precision geolocation in a 30x24mm form factor.


Pre-GO modules can connect to any host board with an available UART connection. Logic levels are at 3.3V, and the board is powered by the 5V supply; however, by removing and replacing a jumper resistor, the board can be powered by a 3.3V source.

The GPS antenna is on the board; look at our other board with an SMA connector instead to allow external placement of an antenna.

Customization alternatives

A Geppetto designer has the choice of including a header on a custom-design that connects via 5-pin cable to one of these PreGO boards as shown by these examples. Alternatively, the GPS module can be placed directly on a board.

Related Posts

Learn more about this product by checking out the following:

Articles from Gumstix blog


PPP from u-blox, for precision in clear-sky applications without the need for a reference


30 mm W


21 mm L

5-pin GPS Connector

Raw GPS data suitable for rtklib processing

Key Components
UBlox Neo-7P GPS Receiver Module UBlox Neo-7P GNSS Receiver with PPP and raw data output Specs
DF13 R/A 5Pos 1.25mm SMT 5 position R/A connector for UART (DF13 series) Specs
Mating Connectors
Due to manufacturer supply chain end of year schedule, Gumstix' hardware manufacturing will be closed between December 14, 2018 to January 2, 2019.
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