New version 6.3 now with Flash & USB-C header for connection to PC or Mac.

Buy direct from us or via one of our resellers here:

The Uputronics Raspberry Pi GPS/RTC Expansion Board provides a modern multi GNSS GPS receiver and hardware RTC with quick no soldering required connection to all Raspberry Pi boards with the 2x20 header (the original Pi Model A/B are not supported). Featuring PPS (Pulse per second) output to permit the use of the board for PPS disciplined NTP servers, RAW output available from the UBlox™ GPS module and twin super caps for GPS hot start/setting retention & maintaining RTC. Flash is also fitted for retention of settings and a USB-C header to connect to other devices is provided. 

This board retains backwards compatibility with previous generation Uputronics Pi GPS boards. With its features and ease of installation we believe this is the ultimate GPS /  RTC HAT for the Raspberry Pi.

GPS Specifications:

• 72-channel u-blox™ M8 engine
• Up to 3 concurrent GNSS (BeiDou,Galileo,GLONASS,GPS/QZSS)
• Default GNSS: GPS/GLONASS.
• -167dBm Navigation Sensitivity
• 10Hz navigation rate in multiGNSS mode, 18Hz in GPS only
• RAW Output available via UBX-RXM-RAWX Message
• 3V supplied to antenna port to power active antenna
• Antenna requirements: Active 3V (See related items)
• Flash to save settings/config and/or saved to battery backed RAM.
• Default baud rate: 115200bps
• I2C Bus (Address 0x42)

For full documentation please consult the u-blox 8/u-blox M8 receiver description including protocol specification document (UBX-13003221) linked here: https://store.uputronics.com/files/UBX-13003221.pdf

RTC Specifications:

• Micro Crystal RV-3028-C7 Real Time Clock Module
• Factory calibrated ±1 ppm @ 25°C
• I2C Bus (Address 0x52)
• Built in kernel compatibility
• Provides year, month, date, weekday, hours, minutes and seconds

Board Specifications:

• Thermal vents for compatibility with PoE HAT.
• Robust SMA antenna connection.
• USB-C Header for connection to anything that supports USB to serial (USB Cable not supplied see related items).
• High quality German 4 layer PCB.
• High quality Samtec headers (may not be compatible with cheaper headers and connectors)

CE/UKCA Compliant.

1 x Raspberry Pi GPS/RTC Expansion Board
4 x 11mm standoffs with 8 M2.5 Screws
1 x Samtec Header with 4.93mm tails (To stack boards see related items)

We have designed a case for use when not connected to the Raspberry Pi which you can 3D print at home or purchase from us see additional items:

Download Case STL Files / Fusion 360 Files https://a360.co/3DUKeOY & https://a360.co/3yNuvh7 (Note requires 4x M3 x 8mm Countersunk Screws e.g ACCU SSK-M3-8-A2)

Please note optional 3D Printed Case does NOT fit the Raspberry Pi inside its just for casing the board when not connected to a Pi. If you want a specific colour please note in the order comments field or a random colour will be provided.

Full Data Sheet Here

CE Certificate of Conformity
UKCA Certificate of Conformity