The Uputronics Raspberry Pi GPS/RTC Expansion Board provides a modern multi GNSS GPS receiver and hardware RTC with no soldering required. It can be connected to all Raspberry Pi boards with the 40-pin (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.
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 multi GNSS 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 Ceramic Patch
• No EEPROM settings must be sent at power-up or saved to battery-backed RAM.
• Default baud rate: 9600bps
• I2C Bus (Address 0x42)
• Robust SMA antenna connection.
For full documentation please consult the u-blox 8/u-blox M8 receiver description including protocol specification document (UBX-13003221) linked here.
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
Pin Mapping
| Pin |
Raspberry Pi Name/Function |
HAB-GPSPI+-ASSY |
| 01 |
3.3V |
3.3V |
| 02/04 |
5V |
5V (for super caps) |
| 03 |
GPIO2 (SDA1, I2C) |
GPS/RTC SDA |
| 05 |
GPIO3 (SCL1, I2C) |
GPS/RTC SCL |
| 08 |
GPIO14 (TXD0) |
GPS Serial RXD |
| 10 |
GPSIO15 (RXD0) |
GPS Serial TXD |
| 12 |
GPIO18 |
Time Pulse |
Board Specifications
- Weight: 15g excluding fixings and antenna
- Batteries: 2 x 0.2F 3.3V Super Capacitors
- Connector Pitch: 2.54mm pitch Raspberry Pi 2x20 Header
- Power Usage (from 3.3V): Acquire 25mA / Tracking 21mA / Cyclic PSM Mode 9mA
- GPS Antenna Connector: SMA Female
- Operating Temperature: -40°C to +85°C
In The Box
1 x Raspberry Pi GPS/RTC Expansion Board
4 x 11mm standoffs w/8 M2.5 Screws
1 x Header with 4.93mm tails
We also have a great case available for the Raspberry Pi and GPS HAT combination, and you'll probably need an external Antenna to get going!
Resources
Please Note. This board is NOT compatible with the original Raspberry Pi A and B boards.
